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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [reflect/] [all_test.go] - Blame information for rev 848

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Line No. Rev Author Line
1 747 jeremybenn 
// Copyright 2009 The Go Authors. All rights reserved.
2 
// Use of this source code is governed by a BSD-style
3 
// license that can be found in the LICENSE file.
4 
 
5 
package reflect_test
6 
 
7 
import (
8 
        "bytes"
9 
        "encoding/base64"
10 
        "fmt"
11 
        "io"
12 
        "os"
13 
        . "reflect"
14 
        /*      "runtime" */
15 
        "testing"
16 
        "unsafe"
17 
)
18 
 
19 
func TestBool(t *testing.T) {
20 
        v := ValueOf(true)
21 
        if v.Bool() != true {
22 
                t.Fatal("ValueOf(true).Bool() = false")
23 
        }
24 
}
25 
 
26 
type integer int
27 
type T struct {
28 
        a int
29 
        b float64
30 
        c string
31 
        d *int
32 
}
33 
 
34 
type pair struct {
35 
        i interface{}
36 
        s string
37 
}
38 
 
39 
func isDigit(c uint8) bool { return '0' <= c && c <= '9' }
40 
 
41 
func assert(t *testing.T, s, want string) {
42 
        if s != want {
43 
                t.Errorf("have %#q want %#q", s, want)
44 
        }
45 
}
46 
 
47 
func typestring(i interface{}) string { return TypeOf(i).String() }
48 
 
49 
var typeTests = []pair{
50 
        {struct{ x int }{}, "int"},
51 
        {struct{ x int8 }{}, "int8"},
52 
        {struct{ x int16 }{}, "int16"},
53 
        {struct{ x int32 }{}, "int32"},
54 
        {struct{ x int64 }{}, "int64"},
55 
        {struct{ x uint }{}, "uint"},
56 
        {struct{ x uint8 }{}, "uint8"},
57 
        {struct{ x uint16 }{}, "uint16"},
58 
        {struct{ x uint32 }{}, "uint32"},
59 
        {struct{ x uint64 }{}, "uint64"},
60 
        {struct{ x float32 }{}, "float32"},
61 
        {struct{ x float64 }{}, "float64"},
62 
        {struct{ x int8 }{}, "int8"},
63 
        {struct{ x (**int8) }{}, "**int8"},
64 
        {struct{ x (**integer) }{}, "**reflect_test.integer"},
65 
        {struct{ x ([32]int32) }{}, "[32]int32"},
66 
        {struct{ x ([]int8) }{}, "[]int8"},
67 
        {struct{ x (map[string]int32) }{}, "map[string]int32"},
68 
        {struct{ x (chan<- string) }{}, "chan<- string"},
69 
        {struct {
70 
                x struct {
71 
                        c chan *int32
72 
                        d float32
73 
                }
74 
        }{},
75 
                "struct { c chan *int32; d float32 }",
76 
        },
77 
        {struct{ x (func(a int8, b int32)) }{}, "func(int8, int32)"},
78 
        {struct {
79 
                x struct {
80 
                        c func(chan *integer, *int8)
81 
                }
82 
        }{},
83 
                "struct { c func(chan *reflect_test.integer, *int8) }",
84 
        },
85 
        {struct {
86 
                x struct {
87 
                        a int8
88 
                        b int32
89 
                }
90 
        }{},
91 
                "struct { a int8; b int32 }",
92 
        },
93 
        {struct {
94 
                x struct {
95 
                        a int8
96 
                        b int8
97 
                        c int32
98 
                }
99 
        }{},
100 
                "struct { a int8; b int8; c int32 }",
101 
        },
102 
        {struct {
103 
                x struct {
104 
                        a int8
105 
                        b int8
106 
                        c int8
107 
                        d int32
108 
                }
109 
        }{},
110 
                "struct { a int8; b int8; c int8; d int32 }",
111 
        },
112 
        {struct {
113 
                x struct {
114 
                        a int8
115 
                        b int8
116 
                        c int8
117 
                        d int8
118 
                        e int32
119 
                }
120 
        }{},
121 
                "struct { a int8; b int8; c int8; d int8; e int32 }",
122 
        },
123 
        {struct {
124 
                x struct {
125 
                        a int8
126 
                        b int8
127 
                        c int8
128 
                        d int8
129 
                        e int8
130 
                        f int32
131 
                }
132 
        }{},
133 
                "struct { a int8; b int8; c int8; d int8; e int8; f int32 }",
134 
        },
135 
        {struct {
136 
                x struct {
137 
                        a int8 `reflect:"hi there"`
138 
                }
139 
        }{},
140 
                `struct { a int8 "reflect:\"hi there\"" }`,
141 
        },
142 
        {struct {
143 
                x struct {
144 
                        a int8 `reflect:"hi \x00there\t\n\"\\"`
145 
                }
146 
        }{},
147 
                `struct { a int8 "reflect:\"hi \\x00there\\t\\n\\\"\\\\\"" }`,
148 
        },
149 
        {struct {
150 
                x struct {
151 
                        f func(args ...int)
152 
                }
153 
        }{},
154 
                "struct { f func(...int) }",
155 
        },
156 
        {struct {
157 
                x (interface {
158 
                        a(func(func(int) int) func(func(int)) int)
159 
                        b()
160 
                })
161 
        }{},
162 
                "interface { reflect_test.a(func(func(int) int) func(func(int)) int); reflect_test.b() }",
163 
        },
164 
}
165 
 
166 
var valueTests = []pair{
167 
        {new(int8), "8"},
168 
        {new(int16), "16"},
169 
        {new(int32), "32"},
170 
        {new(int64), "64"},
171 
        {new(uint8), "8"},
172 
        {new(uint16), "16"},
173 
        {new(uint32), "32"},
174 
        {new(uint64), "64"},
175 
        {new(float32), "256.25"},
176 
        {new(float64), "512.125"},
177 
        {new(string), "stringy cheese"},
178 
        {new(bool), "true"},
179 
        {new(*int8), "*int8(0)"},
180 
        {new(**int8), "**int8(0)"},
181 
        {new([5]int32), "[5]int32{0, 0, 0, 0, 0}"},
182 
        {new(**integer), "**reflect_test.integer(0)"},
183 
        {new(map[string]int32), "map[string]int32{}"},
184 
        {new(chan<- string), "chan<- string"},
185 
        {new(func(a int8, b int32)), "func(int8, int32)(0)"},
186 
        {new(struct {
187 
                c chan *int32
188 
                d float32
189 
        }),
190 
                "struct { c chan *int32; d float32 }{chan *int32, 0}",
191 
        },
192 
        {new(struct{ c func(chan *integer, *int8) }),
193 
                "struct { c func(chan *reflect_test.integer, *int8) }{func(chan *reflect_test.integer, *int8)(0)}",
194 
        },
195 
        {new(struct {
196 
                a int8
197 
                b int32
198 
        }),
199 
                "struct { a int8; b int32 }{0, 0}",
200 
        },
201 
        {new(struct {
202 
                a int8
203 
                b int8
204 
                c int32
205 
        }),
206 
                "struct { a int8; b int8; c int32 }{0, 0, 0}",
207 
        },
208 
}
209 
 
210 
func testType(t *testing.T, i int, typ Type, want string) {
211 
        s := typ.String()
212 
        if s != want {
213 
                t.Errorf("#%d: have %#q, want %#q", i, s, want)
214 
        }
215 
}
216 
 
217 
func TestTypes(t *testing.T) {
218 
        for i, tt := range typeTests {
219 
                testType(t, i, ValueOf(tt.i).Field(0).Type(), tt.s)
220 
        }
221 
}
222 
 
223 
func TestSet(t *testing.T) {
224 
        for i, tt := range valueTests {
225 
                v := ValueOf(tt.i)
226 
                v = v.Elem()
227 
                switch v.Kind() {
228 
                case Int:
229 
                        v.SetInt(132)
230 
                case Int8:
231 
                        v.SetInt(8)
232 
                case Int16:
233 
                        v.SetInt(16)
234 
                case Int32:
235 
                        v.SetInt(32)
236 
                case Int64:
237 
                        v.SetInt(64)
238 
                case Uint:
239 
                        v.SetUint(132)
240 
                case Uint8:
241 
                        v.SetUint(8)
242 
                case Uint16:
243 
                        v.SetUint(16)
244 
                case Uint32:
245 
                        v.SetUint(32)
246 
                case Uint64:
247 
                        v.SetUint(64)
248 
                case Float32:
249 
                        v.SetFloat(256.25)
250 
                case Float64:
251 
                        v.SetFloat(512.125)
252 
                case Complex64:
253 
                        v.SetComplex(532.125 + 10i)
254 
                case Complex128:
255 
                        v.SetComplex(564.25 + 1i)
256 
                case String:
257 
                        v.SetString("stringy cheese")
258 
                case Bool:
259 
                        v.SetBool(true)
260 
                }
261 
                s := valueToString(v)
262 
                if s != tt.s {
263 
                        t.Errorf("#%d: have %#q, want %#q", i, s, tt.s)
264 
                }
265 
        }
266 
}
267 
 
268 
func TestSetValue(t *testing.T) {
269 
        for i, tt := range valueTests {
270 
                v := ValueOf(tt.i).Elem()
271 
                switch v.Kind() {
272 
                case Int:
273 
                        v.Set(ValueOf(int(132)))
274 
                case Int8:
275 
                        v.Set(ValueOf(int8(8)))
276 
                case Int16:
277 
                        v.Set(ValueOf(int16(16)))
278 
                case Int32:
279 
                        v.Set(ValueOf(int32(32)))
280 
                case Int64:
281 
                        v.Set(ValueOf(int64(64)))
282 
                case Uint:
283 
                        v.Set(ValueOf(uint(132)))
284 
                case Uint8:
285 
                        v.Set(ValueOf(uint8(8)))
286 
                case Uint16:
287 
                        v.Set(ValueOf(uint16(16)))
288 
                case Uint32:
289 
                        v.Set(ValueOf(uint32(32)))
290 
                case Uint64:
291 
                        v.Set(ValueOf(uint64(64)))
292 
                case Float32:
293 
                        v.Set(ValueOf(float32(256.25)))
294 
                case Float64:
295 
                        v.Set(ValueOf(512.125))
296 
                case Complex64:
297 
                        v.Set(ValueOf(complex64(532.125 + 10i)))
298 
                case Complex128:
299 
                        v.Set(ValueOf(complex128(564.25 + 1i)))
300 
                case String:
301 
                        v.Set(ValueOf("stringy cheese"))
302 
                case Bool:
303 
                        v.Set(ValueOf(true))
304 
                }
305 
                s := valueToString(v)
306 
                if s != tt.s {
307 
                        t.Errorf("#%d: have %#q, want %#q", i, s, tt.s)
308 
                }
309 
        }
310 
}
311 
 
312 
var _i = 7
313 
 
314 
var valueToStringTests = []pair{
315 
        {123, "123"},
316 
        {123.5, "123.5"},
317 
        {byte(123), "123"},
318 
        {"abc", "abc"},
319 
        {T{123, 456.75, "hello", &_i}, "reflect_test.T{123, 456.75, hello, *int(&7)}"},
320 
        {new(chan *T), "*chan *reflect_test.T(&chan *reflect_test.T)"},
321 
        {[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"},
322 
        {&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[10]int(&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"},
323 
        {[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}"},
324 
        {&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, "*[]int(&[]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})"},
325 
}
326 
 
327 
func TestValueToString(t *testing.T) {
328 
        for i, test := range valueToStringTests {
329 
                s := valueToString(ValueOf(test.i))
330 
                if s != test.s {
331 
                        t.Errorf("#%d: have %#q, want %#q", i, s, test.s)
332 
                }
333 
        }
334 
}
335 
 
336 
func TestArrayElemSet(t *testing.T) {
337 
        v := ValueOf(&[10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}).Elem()
338 
        v.Index(4).SetInt(123)
339 
        s := valueToString(v)
340 
        const want = "[10]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}"
341 
        if s != want {
342 
                t.Errorf("[10]int: have %#q want %#q", s, want)
343 
        }
344 
 
345 
        v = ValueOf([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
346 
        v.Index(4).SetInt(123)
347 
        s = valueToString(v)
348 
        const want1 = "[]int{1, 2, 3, 4, 123, 6, 7, 8, 9, 10}"
349 
        if s != want1 {
350 
                t.Errorf("[]int: have %#q want %#q", s, want1)
351 
        }
352 
}
353 
 
354 
func TestPtrPointTo(t *testing.T) {
355 
        var ip *int32
356 
        var i int32 = 1234
357 
        vip := ValueOf(&ip)
358 
        vi := ValueOf(&i).Elem()
359 
        vip.Elem().Set(vi.Addr())
360 
        if *ip != 1234 {
361 
                t.Errorf("got %d, want 1234", *ip)
362 
        }
363 
 
364 
        ip = nil
365 
        vp := ValueOf(&ip).Elem()
366 
        vp.Set(Zero(vp.Type()))
367 
        if ip != nil {
368 
                t.Errorf("got non-nil (%p), want nil", ip)
369 
        }
370 
}
371 
 
372 
func TestPtrSetNil(t *testing.T) {
373 
        var i int32 = 1234
374 
        ip := &i
375 
        vip := ValueOf(&ip)
376 
        vip.Elem().Set(Zero(vip.Elem().Type()))
377 
        if ip != nil {
378 
                t.Errorf("got non-nil (%d), want nil", *ip)
379 
        }
380 
}
381 
 
382 
func TestMapSetNil(t *testing.T) {
383 
        m := make(map[string]int)
384 
        vm := ValueOf(&m)
385 
        vm.Elem().Set(Zero(vm.Elem().Type()))
386 
        if m != nil {
387 
                t.Errorf("got non-nil (%p), want nil", m)
388 
        }
389 
}
390 
 
391 
func TestAll(t *testing.T) {
392 
        testType(t, 1, TypeOf((int8)(0)), "int8")
393 
        testType(t, 2, TypeOf((*int8)(nil)).Elem(), "int8")
394 
 
395 
        typ := TypeOf((*struct {
396 
                c chan *int32
397 
                d float32
398 
        })(nil))
399 
        testType(t, 3, typ, "*struct { c chan *int32; d float32 }")
400 
        etyp := typ.Elem()
401 
        testType(t, 4, etyp, "struct { c chan *int32; d float32 }")
402 
        styp := etyp
403 
        f := styp.Field(0)
404 
        testType(t, 5, f.Type, "chan *int32")
405 
 
406 
        f, present := styp.FieldByName("d")
407 
        if !present {
408 
                t.Errorf("FieldByName says present field is absent")
409 
        }
410 
        testType(t, 6, f.Type, "float32")
411 
 
412 
        f, present = styp.FieldByName("absent")
413 
        if present {
414 
                t.Errorf("FieldByName says absent field is present")
415 
        }
416 
 
417 
        typ = TypeOf([32]int32{})
418 
        testType(t, 7, typ, "[32]int32")
419 
        testType(t, 8, typ.Elem(), "int32")
420 
 
421 
        typ = TypeOf((map[string]*int32)(nil))
422 
        testType(t, 9, typ, "map[string]*int32")
423 
        mtyp := typ
424 
        testType(t, 10, mtyp.Key(), "string")
425 
        testType(t, 11, mtyp.Elem(), "*int32")
426 
 
427 
        typ = TypeOf((chan<- string)(nil))
428 
        testType(t, 12, typ, "chan<- string")
429 
        testType(t, 13, typ.Elem(), "string")
430 
 
431 
        // make sure tag strings are not part of element type
432 
        typ = TypeOf(struct {
433 
                d []uint32 `reflect:"TAG"`
434 
        }{}).Field(0).Type
435 
        testType(t, 14, typ, "[]uint32")
436 
}
437 
 
438 
func TestInterfaceGet(t *testing.T) {
439 
        var inter struct {
440 
                E interface{}
441 
        }
442 
        inter.E = 123.456
443 
        v1 := ValueOf(&inter)
444 
        v2 := v1.Elem().Field(0)
445 
        assert(t, v2.Type().String(), "interface {}")
446 
        i2 := v2.Interface()
447 
        v3 := ValueOf(i2)
448 
        assert(t, v3.Type().String(), "float64")
449 
}
450 
 
451 
func TestInterfaceValue(t *testing.T) {
452 
        var inter struct {
453 
                E interface{}
454 
        }
455 
        inter.E = 123.456
456 
        v1 := ValueOf(&inter)
457 
        v2 := v1.Elem().Field(0)
458 
        assert(t, v2.Type().String(), "interface {}")
459 
        v3 := v2.Elem()
460 
        assert(t, v3.Type().String(), "float64")
461 
 
462 
        i3 := v2.Interface()
463 
        if _, ok := i3.(float64); !ok {
464 
                t.Error("v2.Interface() did not return float64, got ", TypeOf(i3))
465 
        }
466 
}
467 
 
468 
func TestFunctionValue(t *testing.T) {
469 
        var x interface{} = func() {}
470 
        v := ValueOf(x)
471 
        if fmt.Sprint(v.Interface()) != fmt.Sprint(x) {
472 
                t.Fatalf("TestFunction returned wrong pointer")
473 
        }
474 
        assert(t, v.Type().String(), "func()")
475 
}
476 
 
477 
var appendTests = []struct {
478 
        orig, extra []int
479 
}{
480 
        {make([]int, 2, 4), []int{22}},
481 
        {make([]int, 2, 4), []int{22, 33, 44}},
482 
}
483 
 
484 
func sameInts(x, y []int) bool {
485 
        if len(x) != len(y) {
486 
                return false
487 
        }
488 
        for i, xx := range x {
489 
                if xx != y[i] {
490 
                        return false
491 
                }
492 
        }
493 
        return true
494 
}
495 
 
496 
func TestAppend(t *testing.T) {
497 
        for i, test := range appendTests {
498 
                origLen, extraLen := len(test.orig), len(test.extra)
499 
                want := append(test.orig, test.extra...)
500 
                // Convert extra from []int to []Value.
501 
                e0 := make([]Value, len(test.extra))
502 
                for j, e := range test.extra {
503 
                        e0[j] = ValueOf(e)
504 
                }
505 
                // Convert extra from []int to *SliceValue.
506 
                e1 := ValueOf(test.extra)
507 
                // Test Append.
508 
                a0 := ValueOf(test.orig)
509 
                have0 := Append(a0, e0...).Interface().([]int)
510 
                if !sameInts(have0, want) {
511 
                        t.Errorf("Append #%d: have %v, want %v (%p %p)", i, have0, want, test.orig, have0)
512 
                }
513 
                // Check that the orig and extra slices were not modified.
514 
                if len(test.orig) != origLen {
515 
                        t.Errorf("Append #%d origLen: have %v, want %v", i, len(test.orig), origLen)
516 
                }
517 
                if len(test.extra) != extraLen {
518 
                        t.Errorf("Append #%d extraLen: have %v, want %v", i, len(test.extra), extraLen)
519 
                }
520 
                // Test AppendSlice.
521 
                a1 := ValueOf(test.orig)
522 
                have1 := AppendSlice(a1, e1).Interface().([]int)
523 
                if !sameInts(have1, want) {
524 
                        t.Errorf("AppendSlice #%d: have %v, want %v", i, have1, want)
525 
                }
526 
                // Check that the orig and extra slices were not modified.
527 
                if len(test.orig) != origLen {
528 
                        t.Errorf("AppendSlice #%d origLen: have %v, want %v", i, len(test.orig), origLen)
529 
                }
530 
                if len(test.extra) != extraLen {
531 
                        t.Errorf("AppendSlice #%d extraLen: have %v, want %v", i, len(test.extra), extraLen)
532 
                }
533 
        }
534 
}
535 
 
536 
func TestCopy(t *testing.T) {
537 
        a := []int{1, 2, 3, 4, 10, 9, 8, 7}
538 
        b := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
539 
        c := []int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
540 
        for i := 0; i < len(b); i++ {
541 
                if b[i] != c[i] {
542 
                        t.Fatalf("b != c before test")
543 
                }
544 
        }
545 
        a1 := a
546 
        b1 := b
547 
        aa := ValueOf(&a1).Elem()
548 
        ab := ValueOf(&b1).Elem()
549 
        for tocopy := 1; tocopy <= 7; tocopy++ {
550 
                aa.SetLen(tocopy)
551 
                Copy(ab, aa)
552 
                aa.SetLen(8)
553 
                for i := 0; i < tocopy; i++ {
554 
                        if a[i] != b[i] {
555 
                                t.Errorf("(i) tocopy=%d a[%d]=%d, b[%d]=%d",
556 
                                        tocopy, i, a[i], i, b[i])
557 
                        }
558 
                }
559 
                for i := tocopy; i < len(b); i++ {
560 
                        if b[i] != c[i] {
561 
                                if i < len(a) {
562 
                                        t.Errorf("(ii) tocopy=%d a[%d]=%d, b[%d]=%d, c[%d]=%d",
563 
                                                tocopy, i, a[i], i, b[i], i, c[i])
564 
                                } else {
565 
                                        t.Errorf("(iii) tocopy=%d b[%d]=%d, c[%d]=%d",
566 
                                                tocopy, i, b[i], i, c[i])
567 
                                }
568 
                        } else {
569 
                                t.Logf("tocopy=%d elem %d is okay\n", tocopy, i)
570 
                        }
571 
                }
572 
        }
573 
}
574 
 
575 
func TestCopyArray(t *testing.T) {
576 
        a := [8]int{1, 2, 3, 4, 10, 9, 8, 7}
577 
        b := [11]int{11, 22, 33, 44, 1010, 99, 88, 77, 66, 55, 44}
578 
        c := b
579 
        aa := ValueOf(&a).Elem()
580 
        ab := ValueOf(&b).Elem()
581 
        Copy(ab, aa)
582 
        for i := 0; i < len(a); i++ {
583 
                if a[i] != b[i] {
584 
                        t.Errorf("(i) a[%d]=%d, b[%d]=%d", i, a[i], i, b[i])
585 
                }
586 
        }
587 
        for i := len(a); i < len(b); i++ {
588 
                if b[i] != c[i] {
589 
                        t.Errorf("(ii) b[%d]=%d, c[%d]=%d", i, b[i], i, c[i])
590 
                } else {
591 
                        t.Logf("elem %d is okay\n", i)
592 
                }
593 
        }
594 
}
595 
 
596 
func TestBigUnnamedStruct(t *testing.T) {
597 
        b := struct{ a, b, c, d int64 }{1, 2, 3, 4}
598 
        v := ValueOf(b)
599 
        b1 := v.Interface().(struct {
600 
                a, b, c, d int64
601 
        })
602 
        if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d {
603 
                t.Errorf("ValueOf(%v).Interface().(*Big) = %v", b, b1)
604 
        }
605 
}
606 
 
607 
type big struct {
608 
        a, b, c, d, e int64
609 
}
610 
 
611 
func TestBigStruct(t *testing.T) {
612 
        b := big{1, 2, 3, 4, 5}
613 
        v := ValueOf(b)
614 
        b1 := v.Interface().(big)
615 
        if b1.a != b.a || b1.b != b.b || b1.c != b.c || b1.d != b.d || b1.e != b.e {
616 
                t.Errorf("ValueOf(%v).Interface().(big) = %v", b, b1)
617 
        }
618 
}
619 
 
620 
type Basic struct {
621 
        x int
622 
        y float32
623 
}
624 
 
625 
type NotBasic Basic
626 
 
627 
type DeepEqualTest struct {
628 
        a, b interface{}
629 
        eq   bool
630 
}
631 
 
632 
var deepEqualTests = []DeepEqualTest{
633 
        // Equalities
634 
        {1, 1, true},
635 
        {int32(1), int32(1), true},
636 
        {0.5, 0.5, true},
637 
        {float32(0.5), float32(0.5), true},
638 
        {"hello", "hello", true},
639 
        {make([]int, 10), make([]int, 10), true},
640 
        {&[3]int{1, 2, 3}, &[3]int{1, 2, 3}, true},
641 
        {Basic{1, 0.5}, Basic{1, 0.5}, true},
642 
        {error(nil), error(nil), true},
643 
        {map[int]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, true},
644 
 
645 
        // Inequalities
646 
        {1, 2, false},
647 
        {int32(1), int32(2), false},
648 
        {0.5, 0.6, false},
649 
        {float32(0.5), float32(0.6), false},
650 
        {"hello", "hey", false},
651 
        {make([]int, 10), make([]int, 11), false},
652 
        {&[3]int{1, 2, 3}, &[3]int{1, 2, 4}, false},
653 
        {Basic{1, 0.5}, Basic{1, 0.6}, false},
654 
        {Basic{1, 0}, Basic{2, 0}, false},
655 
        {map[int]string{1: "one", 3: "two"}, map[int]string{2: "two", 1: "one"}, false},
656 
        {map[int]string{1: "one", 2: "txo"}, map[int]string{2: "two", 1: "one"}, false},
657 
        {map[int]string{1: "one"}, map[int]string{2: "two", 1: "one"}, false},
658 
        {map[int]string{2: "two", 1: "one"}, map[int]string{1: "one"}, false},
659 
        {nil, 1, false},
660 
        {1, nil, false},
661 
 
662 
        // Nil vs empty: not the same.
663 
        {[]int{}, []int(nil), false},
664 
        {[]int{}, []int{}, true},
665 
        {[]int(nil), []int(nil), true},
666 
        {map[int]int{}, map[int]int(nil), false},
667 
        {map[int]int{}, map[int]int{}, true},
668 
        {map[int]int(nil), map[int]int(nil), true},
669 
 
670 
        // Mismatched types
671 
        {1, 1.0, false},
672 
        {int32(1), int64(1), false},
673 
        {0.5, "hello", false},
674 
        {[]int{1, 2, 3}, [3]int{1, 2, 3}, false},
675 
        {&[3]interface{}{1, 2, 4}, &[3]interface{}{1, 2, "s"}, false},
676 
        {Basic{1, 0.5}, NotBasic{1, 0.5}, false},
677 
        {map[uint]string{1: "one", 2: "two"}, map[int]string{2: "two", 1: "one"}, false},
678 
}
679 
 
680 
func TestDeepEqual(t *testing.T) {
681 
        for _, test := range deepEqualTests {
682 
                if r := DeepEqual(test.a, test.b); r != test.eq {
683 
                        t.Errorf("DeepEqual(%v, %v) = %v, want %v", test.a, test.b, r, test.eq)
684 
                }
685 
        }
686 
}
687 
 
688 
func TestTypeOf(t *testing.T) {
689 
        for _, test := range deepEqualTests {
690 
                v := ValueOf(test.a)
691 
                if !v.IsValid() {
692 
                        continue
693 
                }
694 
                typ := TypeOf(test.a)
695 
                if typ != v.Type() {
696 
                        t.Errorf("TypeOf(%v) = %v, but ValueOf(%v).Type() = %v", test.a, typ, test.a, v.Type())
697 
                }
698 
        }
699 
}
700 
 
701 
type Recursive struct {
702 
        x int
703 
        r *Recursive
704 
}
705 
 
706 
func TestDeepEqualRecursiveStruct(t *testing.T) {
707 
        a, b := new(Recursive), new(Recursive)
708 
        *a = Recursive{12, a}
709 
        *b = Recursive{12, b}
710 
        if !DeepEqual(a, b) {
711 
                t.Error("DeepEqual(recursive same) = false, want true")
712 
        }
713 
}
714 
 
715 
type _Complex struct {
716 
        a int
717 
        b [3]*_Complex
718 
        c *string
719 
        d map[float64]float64
720 
}
721 
 
722 
func TestDeepEqualComplexStruct(t *testing.T) {
723 
        m := make(map[float64]float64)
724 
        stra, strb := "hello", "hello"
725 
        a, b := new(_Complex), new(_Complex)
726 
        *a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m}
727 
        *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m}
728 
        if !DeepEqual(a, b) {
729 
                t.Error("DeepEqual(complex same) = false, want true")
730 
        }
731 
}
732 
 
733 
func TestDeepEqualComplexStructInequality(t *testing.T) {
734 
        m := make(map[float64]float64)
735 
        stra, strb := "hello", "helloo" // Difference is here
736 
        a, b := new(_Complex), new(_Complex)
737 
        *a = _Complex{5, [3]*_Complex{a, b, a}, &stra, m}
738 
        *b = _Complex{5, [3]*_Complex{b, a, a}, &strb, m}
739 
        if DeepEqual(a, b) {
740 
                t.Error("DeepEqual(complex different) = true, want false")
741 
        }
742 
}
743 
 
744 
type UnexpT struct {
745 
        m map[int]int
746 
}
747 
 
748 
func TestDeepEqualUnexportedMap(t *testing.T) {
749 
        // Check that DeepEqual can look at unexported fields.
750 
        x1 := UnexpT{map[int]int{1: 2}}
751 
        x2 := UnexpT{map[int]int{1: 2}}
752 
        if !DeepEqual(&x1, &x2) {
753 
                t.Error("DeepEqual(x1, x2) = false, want true")
754 
        }
755 
 
756 
        y1 := UnexpT{map[int]int{2: 3}}
757 
        if DeepEqual(&x1, &y1) {
758 
                t.Error("DeepEqual(x1, y1) = true, want false")
759 
        }
760 
}
761 
 
762 
func check2ndField(x interface{}, offs uintptr, t *testing.T) {
763 
        s := ValueOf(x)
764 
        f := s.Type().Field(1)
765 
        if f.Offset != offs {
766 
                t.Error("mismatched offsets in structure alignment:", f.Offset, offs)
767 
        }
768 
}
769 
 
770 
// Check that structure alignment & offsets viewed through reflect agree with those
771 
// from the compiler itself.
772 
func TestAlignment(t *testing.T) {
773 
        type T1inner struct {
774 
                a int
775 
        }
776 
        type T1 struct {
777 
                T1inner
778 
                f int
779 
        }
780 
        type T2inner struct {
781 
                a, b int
782 
        }
783 
        type T2 struct {
784 
                T2inner
785 
                f int
786 
        }
787 
 
788 
        x := T1{T1inner{2}, 17}
789 
        check2ndField(x, uintptr(unsafe.Pointer(&x.f))-uintptr(unsafe.Pointer(&x)), t)
790 
 
791 
        x1 := T2{T2inner{2, 3}, 17}
792 
        check2ndField(x1, uintptr(unsafe.Pointer(&x1.f))-uintptr(unsafe.Pointer(&x1)), t)
793 
}
794 
 
795 
func Nil(a interface{}, t *testing.T) {
796 
        n := ValueOf(a).Field(0)
797 
        if !n.IsNil() {
798 
                t.Errorf("%v should be nil", a)
799 
        }
800 
}
801 
 
802 
func NotNil(a interface{}, t *testing.T) {
803 
        n := ValueOf(a).Field(0)
804 
        if n.IsNil() {
805 
                t.Errorf("value of type %v should not be nil", ValueOf(a).Type().String())
806 
        }
807 
}
808 
 
809 
func TestIsNil(t *testing.T) {
810 
        // These implement IsNil.
811 
        // Wrap in extra struct to hide interface type.
812 
        doNil := []interface{}{
813 
                struct{ x *int }{},
814 
                struct{ x interface{} }{},
815 
                struct{ x map[string]int }{},
816 
                struct{ x func() bool }{},
817 
                struct{ x chan int }{},
818 
                struct{ x []string }{},
819 
        }
820 
        for _, ts := range doNil {
821 
                ty := TypeOf(ts).Field(0).Type
822 
                v := Zero(ty)
823 
                v.IsNil() // panics if not okay to call
824 
        }
825 
 
826 
        // Check the implementations
827 
        var pi struct {
828 
                x *int
829 
        }
830 
        Nil(pi, t)
831 
        pi.x = new(int)
832 
        NotNil(pi, t)
833 
 
834 
        var si struct {
835 
                x []int
836 
        }
837 
        Nil(si, t)
838 
        si.x = make([]int, 10)
839 
        NotNil(si, t)
840 
 
841 
        var ci struct {
842 
                x chan int
843 
        }
844 
        Nil(ci, t)
845 
        ci.x = make(chan int)
846 
        NotNil(ci, t)
847 
 
848 
        var mi struct {
849 
                x map[int]int
850 
        }
851 
        Nil(mi, t)
852 
        mi.x = make(map[int]int)
853 
        NotNil(mi, t)
854 
 
855 
        var ii struct {
856 
                x interface{}
857 
        }
858 
        Nil(ii, t)
859 
        ii.x = 2
860 
        NotNil(ii, t)
861 
 
862 
        var fi struct {
863 
                x func(t *testing.T)
864 
        }
865 
        Nil(fi, t)
866 
        fi.x = TestIsNil
867 
        NotNil(fi, t)
868 
}
869 
 
870 
func TestInterfaceExtraction(t *testing.T) {
871 
        var s struct {
872 
                W io.Writer
873 
        }
874 
 
875 
        s.W = os.Stdout
876 
        v := Indirect(ValueOf(&s)).Field(0).Interface()
877 
        if v != s.W.(interface{}) {
878 
                t.Error("Interface() on interface: ", v, s.W)
879 
        }
880 
}
881 
 
882 
func TestNilPtrValueSub(t *testing.T) {
883 
        var pi *int
884 
        if pv := ValueOf(pi); pv.Elem().IsValid() {
885 
                t.Error("ValueOf((*int)(nil)).Elem().IsValid()")
886 
        }
887 
}
888 
 
889 
func TestMap(t *testing.T) {
890 
        m := map[string]int{"a": 1, "b": 2}
891 
        mv := ValueOf(m)
892 
        if n := mv.Len(); n != len(m) {
893 
                t.Errorf("Len = %d, want %d", n, len(m))
894 
        }
895 
        keys := mv.MapKeys()
896 
        newmap := MakeMap(mv.Type())
897 
        for k, v := range m {
898 
                // Check that returned Keys match keys in range.
899 
                // These aren't required to be in the same order.
900 
                seen := false
901 
                for _, kv := range keys {
902 
                        if kv.String() == k {
903 
                                seen = true
904 
                                break
905 
                        }
906 
                }
907 
                if !seen {
908 
                        t.Errorf("Missing key %q", k)
909 
                }
910 
 
911 
                // Check that value lookup is correct.
912 
                vv := mv.MapIndex(ValueOf(k))
913 
                if vi := vv.Int(); vi != int64(v) {
914 
                        t.Errorf("Key %q: have value %d, want %d", k, vi, v)
915 
                }
916 
 
917 
                // Copy into new map.
918 
                newmap.SetMapIndex(ValueOf(k), ValueOf(v))
919 
        }
920 
        vv := mv.MapIndex(ValueOf("not-present"))
921 
        if vv.IsValid() {
922 
                t.Errorf("Invalid key: got non-nil value %s", valueToString(vv))
923 
        }
924 
 
925 
        newm := newmap.Interface().(map[string]int)
926 
        if len(newm) != len(m) {
927 
                t.Errorf("length after copy: newm=%d, m=%d", newm, m)
928 
        }
929 
 
930 
        for k, v := range newm {
931 
                mv, ok := m[k]
932 
                if mv != v {
933 
                        t.Errorf("newm[%q] = %d, but m[%q] = %d, %v", k, v, k, mv, ok)
934 
                }
935 
        }
936 
 
937 
        newmap.SetMapIndex(ValueOf("a"), Value{})
938 
        v, ok := newm["a"]
939 
        if ok {
940 
                t.Errorf("newm[\"a\"] = %d after delete", v)
941 
        }
942 
 
943 
        mv = ValueOf(&m).Elem()
944 
        mv.Set(Zero(mv.Type()))
945 
        if m != nil {
946 
                t.Errorf("mv.Set(nil) failed")
947 
        }
948 
}
949 
 
950 
func TestChan(t *testing.T) {
951 
        for loop := 0; loop < 2; loop++ {
952 
                var c chan int
953 
                var cv Value
954 
 
955 
                // check both ways to allocate channels
956 
                switch loop {
957 
                case 1:
958 
                        c = make(chan int, 1)
959 
                        cv = ValueOf(c)
960 
                case 0:
961 
                        cv = MakeChan(TypeOf(c), 1)
962 
                        c = cv.Interface().(chan int)
963 
                }
964 
 
965 
                // Send
966 
                cv.Send(ValueOf(2))
967 
                if i := <-c; i != 2 {
968 
                        t.Errorf("reflect Send 2, native recv %d", i)
969 
                }
970 
 
971 
                // Recv
972 
                c <- 3
973 
                if i, ok := cv.Recv(); i.Int() != 3 || !ok {
974 
                        t.Errorf("native send 3, reflect Recv %d, %t", i.Int(), ok)
975 
                }
976 
 
977 
                // TryRecv fail
978 
                val, ok := cv.TryRecv()
979 
                if val.IsValid() || ok {
980 
                        t.Errorf("TryRecv on empty chan: %s, %t", valueToString(val), ok)
981 
                }
982 
 
983 
                // TryRecv success
984 
                c <- 4
985 
                val, ok = cv.TryRecv()
986 
                if !val.IsValid() {
987 
                        t.Errorf("TryRecv on ready chan got nil")
988 
                } else if i := val.Int(); i != 4 || !ok {
989 
                        t.Errorf("native send 4, TryRecv %d, %t", i, ok)
990 
                }
991 
 
992 
                // TrySend fail
993 
                c <- 100
994 
                ok = cv.TrySend(ValueOf(5))
995 
                i := <-c
996 
                if ok {
997 
                        t.Errorf("TrySend on full chan succeeded: value %d", i)
998 
                }
999 
 
1000 
                // TrySend success
1001 
                ok = cv.TrySend(ValueOf(6))
1002 
                if !ok {
1003 
                        t.Errorf("TrySend on empty chan failed")
1004 
                } else {
1005 
                        if i = <-c; i != 6 {
1006 
                                t.Errorf("TrySend 6, recv %d", i)
1007 
                        }
1008 
                }
1009 
 
1010 
                // Close
1011 
                c <- 123
1012 
                cv.Close()
1013 
                if i, ok := cv.Recv(); i.Int() != 123 || !ok {
1014 
                        t.Errorf("send 123 then close; Recv %d, %t", i.Int(), ok)
1015 
                }
1016 
                if i, ok := cv.Recv(); i.Int() != 0 || ok {
1017 
                        t.Errorf("after close Recv %d, %t", i.Int(), ok)
1018 
                }
1019 
        }
1020 
 
1021 
        // check creation of unbuffered channel
1022 
        var c chan int
1023 
        cv := MakeChan(TypeOf(c), 0)
1024 
        c = cv.Interface().(chan int)
1025 
        if cv.TrySend(ValueOf(7)) {
1026 
                t.Errorf("TrySend on sync chan succeeded")
1027 
        }
1028 
        if v, ok := cv.TryRecv(); v.IsValid() || ok {
1029 
                t.Errorf("TryRecv on sync chan succeeded: isvalid=%v ok=%v", v.IsValid(), ok)
1030 
        }
1031 
 
1032 
        // len/cap
1033 
        cv = MakeChan(TypeOf(c), 10)
1034 
        c = cv.Interface().(chan int)
1035 
        for i := 0; i < 3; i++ {
1036 
                c <- i
1037 
        }
1038 
        if l, m := cv.Len(), cv.Cap(); l != len(c) || m != cap(c) {
1039 
                t.Errorf("Len/Cap = %d/%d want %d/%d", l, m, len(c), cap(c))
1040 
        }
1041 
 
1042 
}
1043 
 
1044 
// Difficult test for function call because of
1045 
// implicit padding between arguments.
1046 
func dummy(b byte, c int, d byte) (i byte, j int, k byte) {
1047 
        return b, c, d
1048 
}
1049 
 
1050 
func TestFunc(t *testing.T) {
1051 
        ret := ValueOf(dummy).Call([]Value{ValueOf(byte(10)), ValueOf(20), ValueOf(byte(30))})
1052 
        if len(ret) != 3 {
1053 
                t.Fatalf("Call returned %d values, want 3", len(ret))
1054 
        }
1055 
 
1056 
        i := byte(ret[0].Uint())
1057 
        j := int(ret[1].Int())
1058 
        k := byte(ret[2].Uint())
1059 
        if i != 10 || j != 20 || k != 30 {
1060 
                t.Errorf("Call returned %d, %d, %d; want 10, 20, 30", i, j, k)
1061 
        }
1062 
}
1063 
 
1064 
type Point struct {
1065 
        x, y int
1066 
}
1067 
 
1068 
// This will be index 0.
1069 
func (p Point) AnotherMethod(scale int) int {
1070 
        return -1
1071 
}
1072 
 
1073 
// This will be index 1.
1074 
func (p Point) Dist(scale int) int {
1075 
        //      println("Point.Dist", p.x, p.y, scale)
1076 
        return p.x*p.x*scale + p.y*p.y*scale
1077 
}
1078 
 
1079 
func TestMethod(t *testing.T) {
1080 
        // Non-curried method of type.
1081 
        p := Point{3, 4}
1082 
        i := TypeOf(p).Method(1).Func.Call([]Value{ValueOf(p), ValueOf(10)})[0].Int()
1083 
        if i != 250 {
1084 
                t.Errorf("Type Method returned %d; want 250", i)
1085 
        }
1086 
 
1087 
        m, ok := TypeOf(p).MethodByName("Dist")
1088 
        if !ok {
1089 
                t.Fatalf("method by name failed")
1090 
        }
1091 
        m.Func.Call([]Value{ValueOf(p), ValueOf(10)})[0].Int()
1092 
        if i != 250 {
1093 
                t.Errorf("Type MethodByName returned %d; want 250", i)
1094 
        }
1095 
 
1096 
        i = TypeOf(&p).Method(1).Func.Call([]Value{ValueOf(&p), ValueOf(10)})[0].Int()
1097 
        if i != 250 {
1098 
                t.Errorf("Pointer Type Method returned %d; want 250", i)
1099 
        }
1100 
 
1101 
        m, ok = TypeOf(&p).MethodByName("Dist")
1102 
        if !ok {
1103 
                t.Fatalf("ptr method by name failed")
1104 
        }
1105 
        i = m.Func.Call([]Value{ValueOf(&p), ValueOf(10)})[0].Int()
1106 
        if i != 250 {
1107 
                t.Errorf("Pointer Type MethodByName returned %d; want 250", i)
1108 
        }
1109 
 
1110 
        // Curried method of value.
1111 
        tfunc := TypeOf(func(int) int(nil))
1112 
        v := ValueOf(p).Method(1)
1113 
        if tt := v.Type(); tt != tfunc {
1114 
                t.Errorf("Value Method Type is %s; want %s", tt, tfunc)
1115 
        }
1116 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1117 
        if i != 250 {
1118 
                t.Errorf("Value Method returned %d; want 250", i)
1119 
        }
1120 
        v = ValueOf(p).MethodByName("Dist")
1121 
        if tt := v.Type(); tt != tfunc {
1122 
                t.Errorf("Value MethodByName Type is %s; want %s", tt, tfunc)
1123 
        }
1124 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1125 
        if i != 250 {
1126 
                t.Errorf("Value MethodByName returned %d; want 250", i)
1127 
        }
1128 
 
1129 
        // Curried method of pointer.
1130 
        v = ValueOf(&p).Method(1)
1131 
        if tt := v.Type(); tt != tfunc {
1132 
                t.Errorf("Pointer Value Method Type is %s; want %s", tt, tfunc)
1133 
        }
1134 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1135 
        if i != 250 {
1136 
                t.Errorf("Pointer Value Method returned %d; want 250", i)
1137 
        }
1138 
        v = ValueOf(&p).MethodByName("Dist")
1139 
        if tt := v.Type(); tt != tfunc {
1140 
                t.Errorf("Pointer Value MethodByName Type is %s; want %s", tt, tfunc)
1141 
        }
1142 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1143 
        if i != 250 {
1144 
                t.Errorf("Pointer Value MethodByName returned %d; want 250", i)
1145 
        }
1146 
 
1147 
        // Curried method of interface value.
1148 
        // Have to wrap interface value in a struct to get at it.
1149 
        // Passing it to ValueOf directly would
1150 
        // access the underlying Point, not the interface.
1151 
        var s = struct {
1152 
                X interface {
1153 
                        Dist(int) int
1154 
                }
1155 
        }{p}
1156 
        pv := ValueOf(s).Field(0)
1157 
        v = pv.Method(0)
1158 
        if tt := v.Type(); tt != tfunc {
1159 
                t.Errorf("Interface Method Type is %s; want %s", tt, tfunc)
1160 
        }
1161 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1162 
        if i != 250 {
1163 
                t.Errorf("Interface Method returned %d; want 250", i)
1164 
        }
1165 
        v = pv.MethodByName("Dist")
1166 
        if tt := v.Type(); tt != tfunc {
1167 
                t.Errorf("Interface MethodByName Type is %s; want %s", tt, tfunc)
1168 
        }
1169 
        i = v.Call([]Value{ValueOf(10)})[0].Int()
1170 
        if i != 250 {
1171 
                t.Errorf("Interface MethodByName returned %d; want 250", i)
1172 
        }
1173 
}
1174 
 
1175 
func TestInterfaceSet(t *testing.T) {
1176 
        p := &Point{3, 4}
1177 
 
1178 
        var s struct {
1179 
                I interface{}
1180 
                P interface {
1181 
                        Dist(int) int
1182 
                }
1183 
        }
1184 
        sv := ValueOf(&s).Elem()
1185 
        sv.Field(0).Set(ValueOf(p))
1186 
        if q := s.I.(*Point); q != p {
1187 
                t.Errorf("i: have %p want %p", q, p)
1188 
        }
1189 
 
1190 
        pv := sv.Field(1)
1191 
        pv.Set(ValueOf(p))
1192 
        if q := s.P.(*Point); q != p {
1193 
                t.Errorf("i: have %p want %p", q, p)
1194 
        }
1195 
 
1196 
        i := pv.Method(0).Call([]Value{ValueOf(10)})[0].Int()
1197 
        if i != 250 {
1198 
                t.Errorf("Interface Method returned %d; want 250", i)
1199 
        }
1200 
}
1201 
 
1202 
type T1 struct {
1203 
        a string
1204 
        int
1205 
}
1206 
 
1207 
func TestAnonymousFields(t *testing.T) {
1208 
        var field StructField
1209 
        var ok bool
1210 
        var t1 T1
1211 
        type1 := TypeOf(t1)
1212 
        if field, ok = type1.FieldByName("int"); !ok {
1213 
                t.Error("no field 'int'")
1214 
        }
1215 
        if field.Index[0] != 1 {
1216 
                t.Error("field index should be 1; is", field.Index)
1217 
        }
1218 
}
1219 
 
1220 
type FTest struct {
1221 
        s     interface{}
1222 
        name  string
1223 
        index []int
1224 
        value int
1225 
}
1226 
 
1227 
type D1 struct {
1228 
        d int
1229 
}
1230 
type D2 struct {
1231 
        d int
1232 
}
1233 
 
1234 
type S0 struct {
1235 
        A, B, C int
1236 
        D1
1237 
        D2
1238 
}
1239 
 
1240 
type S1 struct {
1241 
        B int
1242 
        S0
1243 
}
1244 
 
1245 
type S2 struct {
1246 
        A int
1247 
        *S1
1248 
}
1249 
 
1250 
type S1x struct {
1251 
        S1
1252 
}
1253 
 
1254 
type S1y struct {
1255 
        S1
1256 
}
1257 
 
1258 
type S3 struct {
1259 
        S1x
1260 
        S2
1261 
        D, E int
1262 
        *S1y
1263 
}
1264 
 
1265 
type S4 struct {
1266 
        *S4
1267 
        A int
1268 
}
1269 
 
1270 
var fieldTests = []FTest{
1271 
        {struct{}{}, "", nil, 0},
1272 
        {struct{}{}, "Foo", nil, 0},
1273 
        {S0{A: 'a'}, "A", []int{0}, 'a'},
1274 
        {S0{}, "D", nil, 0},
1275 
        {S1{S0: S0{A: 'a'}}, "A", []int{1, 0}, 'a'},
1276 
        {S1{B: 'b'}, "B", []int{0}, 'b'},
1277 
        {S1{}, "S0", []int{1}, 0},
1278 
        {S1{S0: S0{C: 'c'}}, "C", []int{1, 2}, 'c'},
1279 
        {S2{A: 'a'}, "A", []int{0}, 'a'},
1280 
        {S2{}, "S1", []int{1}, 0},
1281 
        {S2{S1: &S1{B: 'b'}}, "B", []int{1, 0}, 'b'},
1282 
        {S2{S1: &S1{S0: S0{C: 'c'}}}, "C", []int{1, 1, 2}, 'c'},
1283 
        {S2{}, "D", nil, 0},
1284 
        {S3{}, "S1", nil, 0},
1285 
        {S3{S2: S2{A: 'a'}}, "A", []int{1, 0}, 'a'},
1286 
        {S3{}, "B", nil, 0},
1287 
        {S3{D: 'd'}, "D", []int{2}, 0},
1288 
        {S3{E: 'e'}, "E", []int{3}, 'e'},
1289 
        {S4{A: 'a'}, "A", []int{1}, 'a'},
1290 
        {S4{}, "B", nil, 0},
1291 
}
1292 
 
1293 
func TestFieldByIndex(t *testing.T) {
1294 
        for _, test := range fieldTests {
1295 
                s := TypeOf(test.s)
1296 
                f := s.FieldByIndex(test.index)
1297 
                if f.Name != "" {
1298 
                        if test.index != nil {
1299 
                                if f.Name != test.name {
1300 
                                        t.Errorf("%s.%s found; want %s", s.Name(), f.Name, test.name)
1301 
                                }
1302 
                        } else {
1303 
                                t.Errorf("%s.%s found", s.Name(), f.Name)
1304 
                        }
1305 
                } else if len(test.index) > 0 {
1306 
                        t.Errorf("%s.%s not found", s.Name(), test.name)
1307 
                }
1308 
 
1309 
                if test.value != 0 {
1310 
                        v := ValueOf(test.s).FieldByIndex(test.index)
1311 
                        if v.IsValid() {
1312 
                                if x, ok := v.Interface().(int); ok {
1313 
                                        if x != test.value {
1314 
                                                t.Errorf("%s%v is %d; want %d", s.Name(), test.index, x, test.value)
1315 
                                        }
1316 
                                } else {
1317 
                                        t.Errorf("%s%v value not an int", s.Name(), test.index)
1318 
                                }
1319 
                        } else {
1320 
                                t.Errorf("%s%v value not found", s.Name(), test.index)
1321 
                        }
1322 
                }
1323 
        }
1324 
}
1325 
 
1326 
func TestFieldByName(t *testing.T) {
1327 
        for _, test := range fieldTests {
1328 
                s := TypeOf(test.s)
1329 
                f, found := s.FieldByName(test.name)
1330 
                if found {
1331 
                        if test.index != nil {
1332 
                                // Verify field depth and index.
1333 
                                if len(f.Index) != len(test.index) {
1334 
                                        t.Errorf("%s.%s depth %d; want %d", s.Name(), test.name, len(f.Index), len(test.index))
1335 
                                } else {
1336 
                                        for i, x := range f.Index {
1337 
                                                if x != test.index[i] {
1338 
                                                        t.Errorf("%s.%s.Index[%d] is %d; want %d", s.Name(), test.name, i, x, test.index[i])
1339 
                                                }
1340 
                                        }
1341 
                                }
1342 
                        } else {
1343 
                                t.Errorf("%s.%s found", s.Name(), f.Name)
1344 
                        }
1345 
                } else if len(test.index) > 0 {
1346 
                        t.Errorf("%s.%s not found", s.Name(), test.name)
1347 
                }
1348 
 
1349 
                if test.value != 0 {
1350 
                        v := ValueOf(test.s).FieldByName(test.name)
1351 
                        if v.IsValid() {
1352 
                                if x, ok := v.Interface().(int); ok {
1353 
                                        if x != test.value {
1354 
                                                t.Errorf("%s.%s is %d; want %d", s.Name(), test.name, x, test.value)
1355 
                                        }
1356 
                                } else {
1357 
                                        t.Errorf("%s.%s value not an int", s.Name(), test.name)
1358 
                                }
1359 
                        } else {
1360 
                                t.Errorf("%s.%s value not found", s.Name(), test.name)
1361 
                        }
1362 
                }
1363 
        }
1364 
}
1365 
 
1366 
func TestImportPath(t *testing.T) {
1367 
        tests := []struct {
1368 
                t    Type
1369 
                path string
1370 
        }{
1371 
                {TypeOf(&base64.Encoding{}).Elem(), "libgo_encoding.base64"},
1372 
                {TypeOf(uint(0)), ""},
1373 
                {TypeOf(map[string]int{}), ""},
1374 
                {TypeOf((*error)(nil)).Elem(), ""},
1375 
        }
1376 
        for _, test := range tests {
1377 
                if path := test.t.PkgPath(); path != test.path {
1378 
                        t.Errorf("%v.PkgPath() = %q, want %q", test.t, path, test.path)
1379 
                }
1380 
        }
1381 
}
1382 
 
1383 
func TestVariadicType(t *testing.T) {
1384 
        // Test example from Type documentation.
1385 
        var f func(x int, y ...float64)
1386 
        typ := TypeOf(f)
1387 
        if typ.NumIn() == 2 && typ.In(0) == TypeOf(int(0)) {
1388 
                sl := typ.In(1)
1389 
                if sl.Kind() == Slice {
1390 
                        if sl.Elem() == TypeOf(0.0) {
1391 
                                // ok
1392 
                                return
1393 
                        }
1394 
                }
1395 
        }
1396 
 
1397 
        // Failed
1398 
        t.Errorf("want NumIn() = 2, In(0) = int, In(1) = []float64")
1399 
        s := fmt.Sprintf("have NumIn() = %d", typ.NumIn())
1400 
        for i := 0; i < typ.NumIn(); i++ {
1401 
                s += fmt.Sprintf(", In(%d) = %s", i, typ.In(i))
1402 
        }
1403 
        t.Error(s)
1404 
}
1405 
 
1406 
type inner struct {
1407 
        x int
1408 
}
1409 
 
1410 
type outer struct {
1411 
        y int
1412 
        inner
1413 
}
1414 
 
1415 
func (*inner) m() {}
1416 
func (*outer) m() {}
1417 
 
1418 
func TestNestedMethods(t *testing.T) {
1419 
        typ := TypeOf((*outer)(nil))
1420 
        if typ.NumMethod() != 1 || typ.Method(0).Func.Pointer() != ValueOf((*outer).m).Pointer() {
1421 
                t.Errorf("Wrong method table for outer: (m=%p)", (*outer).m)
1422 
                for i := 0; i < typ.NumMethod(); i++ {
1423 
                        m := typ.Method(i)
1424 
                        t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Pointer())
1425 
                }
1426 
        }
1427 
}
1428 
 
1429 
type InnerInt struct {
1430 
        X int
1431 
}
1432 
 
1433 
type OuterInt struct {
1434 
        Y int
1435 
        InnerInt
1436 
}
1437 
 
1438 
func (i *InnerInt) M() int {
1439 
        return i.X
1440 
}
1441 
 
1442 
func TestEmbeddedMethods(t *testing.T) {
1443 
        typ := TypeOf((*OuterInt)(nil))
1444 
        if typ.NumMethod() != 1 || typ.Method(0).Func.Pointer() != ValueOf((*OuterInt).M).Pointer() {
1445 
                t.Errorf("Wrong method table for OuterInt: (m=%p)", (*OuterInt).M)
1446 
                for i := 0; i < typ.NumMethod(); i++ {
1447 
                        m := typ.Method(i)
1448 
                        t.Errorf("\t%d: %s %#x\n", i, m.Name, m.Func.Pointer())
1449 
                }
1450 
        }
1451 
 
1452 
        i := &InnerInt{3}
1453 
        if v := ValueOf(i).Method(0).Call(nil)[0].Int(); v != 3 {
1454 
                t.Errorf("i.M() = %d, want 3", v)
1455 
        }
1456 
 
1457 
        o := &OuterInt{1, InnerInt{2}}
1458 
        if v := ValueOf(o).Method(0).Call(nil)[0].Int(); v != 2 {
1459 
                t.Errorf("i.M() = %d, want 2", v)
1460 
        }
1461 
 
1462 
        f := (*OuterInt).M
1463 
        if v := f(o); v != 2 {
1464 
                t.Errorf("f(o) = %d, want 2", v)
1465 
        }
1466 
}
1467 
 
1468 
func TestPtrTo(t *testing.T) {
1469 
        var i int
1470 
 
1471 
        typ := TypeOf(i)
1472 
        for i = 0; i < 100; i++ {
1473 
                typ = PtrTo(typ)
1474 
        }
1475 
        for i = 0; i < 100; i++ {
1476 
                typ = typ.Elem()
1477 
        }
1478 
        if typ != TypeOf(i) {
1479 
                t.Errorf("after 100 PtrTo and Elem, have %s, want %s", typ, TypeOf(i))
1480 
        }
1481 
}
1482 
 
1483 
func TestAddr(t *testing.T) {
1484 
        var p struct {
1485 
                X, Y int
1486 
        }
1487 
 
1488 
        v := ValueOf(&p)
1489 
        v = v.Elem()
1490 
        v = v.Addr()
1491 
        v = v.Elem()
1492 
        v = v.Field(0)
1493 
        v.SetInt(2)
1494 
        if p.X != 2 {
1495 
                t.Errorf("Addr.Elem.Set failed to set value")
1496 
        }
1497 
 
1498 
        // Again but take address of the ValueOf value.
1499 
        // Exercises generation of PtrTypes not present in the binary.
1500 
        q := &p
1501 
        v = ValueOf(&q).Elem()
1502 
        v = v.Addr()
1503 
        v = v.Elem()
1504 
        v = v.Elem()
1505 
        v = v.Addr()
1506 
        v = v.Elem()
1507 
        v = v.Field(0)
1508 
        v.SetInt(3)
1509 
        if p.X != 3 {
1510 
                t.Errorf("Addr.Elem.Set failed to set value")
1511 
        }
1512 
 
1513 
        // Starting without pointer we should get changed value
1514 
        // in interface.
1515 
        qq := p
1516 
        v = ValueOf(&qq).Elem()
1517 
        v0 := v
1518 
        v = v.Addr()
1519 
        v = v.Elem()
1520 
        v = v.Field(0)
1521 
        v.SetInt(4)
1522 
        if p.X != 3 { // should be unchanged from last time
1523 
                t.Errorf("somehow value Set changed original p")
1524 
        }
1525 
        p = v0.Interface().(struct {
1526 
                X, Y int
1527 
        })
1528 
        if p.X != 4 {
1529 
                t.Errorf("Addr.Elem.Set valued to set value in top value")
1530 
        }
1531 
 
1532 
        // Verify that taking the address of a type gives us a pointer
1533 
        // which we can convert back using the usual interface
1534 
        // notation.
1535 
        var s struct {
1536 
                B *bool
1537 
        }
1538 
        ps := ValueOf(&s).Elem().Field(0).Addr().Interface()
1539 
        *(ps.(**bool)) = new(bool)
1540 
        if s.B == nil {
1541 
                t.Errorf("Addr.Interface direct assignment failed")
1542 
        }
1543 
}
1544 
 
1545 
/* gccgo does do allocations here.
1546 
 
1547 
func noAlloc(t *testing.T, n int, f func(int)) {
1548 
        // once to prime everything
1549 
        f(-1)
1550 
        memstats := new(runtime.MemStats)
1551 
        runtime.ReadMemStats(memstats)
1552 
        oldmallocs := memstats.Mallocs
1553 
 
1554 
        for j := 0; j < n; j++ {
1555 
                f(j)
1556 
        }
1557 
        // A few allocs may happen in the testing package when GOMAXPROCS > 1, so don't
1558 
        // require zero mallocs.
1559 
        runtime.ReadMemStats(memstats)
1560 
        mallocs := memstats.Mallocs - oldmallocs
1561 
        if mallocs > 5 {
1562 
                t.Fatalf("%d mallocs after %d iterations", mallocs, n)
1563 
        }
1564 
}
1565 
 
1566 
func TestAllocations(t *testing.T) {
1567 
        noAlloc(t, 100, func(j int) {
1568 
                var i interface{}
1569 
                var v Value
1570 
                i = 42 + j
1571 
                v = ValueOf(i)
1572 
                if int(v.Int()) != 42+j {
1573 
                        panic("wrong int")
1574 
                }
1575 
        })
1576 
}
1577 
 
1578 
*/
1579 
 
1580 
func TestSmallNegativeInt(t *testing.T) {
1581 
        i := int16(-1)
1582 
        v := ValueOf(i)
1583 
        if v.Int() != -1 {
1584 
                t.Errorf("int16(-1).Int() returned %v", v.Int())
1585 
        }
1586 
}
1587 
 
1588 
func TestSlice(t *testing.T) {
1589 
        xs := []int{1, 2, 3, 4, 5, 6, 7, 8}
1590 
        v := ValueOf(xs).Slice(3, 5).Interface().([]int)
1591 
        if len(v) != 2 {
1592 
                t.Errorf("len(xs.Slice(3, 5)) = %d", len(v))
1593 
        }
1594 
        if cap(v) != 5 {
1595 
                t.Errorf("cap(xs.Slice(3, 5)) = %d", cap(v))
1596 
        }
1597 
        if !DeepEqual(v[0:5], xs[3:]) {
1598 
                t.Errorf("xs.Slice(3, 5)[0:5] = %v", v[0:5])
1599 
        }
1600 
 
1601 
        xa := [8]int{10, 20, 30, 40, 50, 60, 70, 80}
1602 
        v = ValueOf(&xa).Elem().Slice(2, 5).Interface().([]int)
1603 
        if len(v) != 3 {
1604 
                t.Errorf("len(xa.Slice(2, 5)) = %d", len(v))
1605 
        }
1606 
        if cap(v) != 6 {
1607 
                t.Errorf("cap(xa.Slice(2, 5)) = %d", cap(v))
1608 
        }
1609 
        if !DeepEqual(v[0:6], xa[2:]) {
1610 
                t.Errorf("xs.Slice(2, 5)[0:6] = %v", v[0:6])
1611 
        }
1612 
}
1613 
 
1614 
func TestVariadic(t *testing.T) {
1615 
        var b bytes.Buffer
1616 
        V := ValueOf
1617 
 
1618 
        b.Reset()
1619 
        V(fmt.Fprintf).Call([]Value{V(&b), V("%s, %d world"), V("hello"), V(42)})
1620 
        if b.String() != "hello, 42 world" {
1621 
                t.Errorf("after Fprintf Call: %q != %q", b.String(), "hello 42 world")
1622 
        }
1623 
 
1624 
        b.Reset()
1625 
        V(fmt.Fprintf).CallSlice([]Value{V(&b), V("%s, %d world"), V([]interface{}{"hello", 42})})
1626 
        if b.String() != "hello, 42 world" {
1627 
                t.Errorf("after Fprintf CallSlice: %q != %q", b.String(), "hello 42 world")
1628 
        }
1629 
}
1630 
 
1631 
var tagGetTests = []struct {
1632 
        Tag   StructTag
1633 
        Key   string
1634 
        Value string
1635 
}{
1636 
        {`protobuf:"PB(1,2)"`, `protobuf`, `PB(1,2)`},
1637 
        {`protobuf:"PB(1,2)"`, `foo`, ``},
1638 
        {`protobuf:"PB(1,2)"`, `rotobuf`, ``},
1639 
        {`protobuf:"PB(1,2)" json:"name"`, `json`, `name`},
1640 
        {`protobuf:"PB(1,2)" json:"name"`, `protobuf`, `PB(1,2)`},
1641 
}
1642 
 
1643 
func TestTagGet(t *testing.T) {
1644 
        for _, tt := range tagGetTests {
1645 
                if v := tt.Tag.Get(tt.Key); v != tt.Value {
1646 
                        t.Errorf("StructTag(%#q).Get(%#q) = %#q, want %#q", tt.Tag, tt.Key, v, tt.Value)
1647 
                }
1648 
        }
1649 
}
1650 
 
1651 
func TestBytes(t *testing.T) {
1652 
        type B []byte
1653 
        x := B{1, 2, 3, 4}
1654 
        y := ValueOf(x).Bytes()
1655 
        if !bytes.Equal(x, y) {
1656 
                t.Fatalf("ValueOf(%v).Bytes() = %v", x, y)
1657 
        }
1658 
        if &x[0] != &y[0] {
1659 
                t.Errorf("ValueOf(%p).Bytes() = %p", &x[0], &y[0])
1660 
        }
1661 
}
1662 
 
1663 
func TestSetBytes(t *testing.T) {
1664 
        type B []byte
1665 
        var x B
1666 
        y := []byte{1, 2, 3, 4}
1667 
        ValueOf(&x).Elem().SetBytes(y)
1668 
        if !bytes.Equal(x, y) {
1669 
                t.Fatalf("ValueOf(%v).Bytes() = %v", x, y)
1670 
        }
1671 
        if &x[0] != &y[0] {
1672 
                t.Errorf("ValueOf(%p).Bytes() = %p", &x[0], &y[0])
1673 
        }
1674 
}
1675 
 
1676 
type Private struct {
1677 
        x int
1678 
        y **int
1679 
}
1680 
 
1681 
func (p *Private) m() {
1682 
}
1683 
 
1684 
type Public struct {
1685 
        X int
1686 
        Y **int
1687 
}
1688 
 
1689 
func (p *Public) M() {
1690 
}
1691 
 
1692 
func TestUnexported(t *testing.T) {
1693 
        var pub Public
1694 
        v := ValueOf(&pub)
1695 
        isValid(v.Elem().Field(0))
1696 
        isValid(v.Elem().Field(1))
1697 
        isValid(v.Elem().FieldByName("X"))
1698 
        isValid(v.Elem().FieldByName("Y"))
1699 
        isValid(v.Type().Method(0).Func)
1700 
        isNonNil(v.Elem().Field(0).Interface())
1701 
        isNonNil(v.Elem().Field(1).Interface())
1702 
        isNonNil(v.Elem().FieldByName("X").Interface())
1703 
        isNonNil(v.Elem().FieldByName("Y").Interface())
1704 
        isNonNil(v.Type().Method(0).Func.Interface())
1705 
 
1706 
        var priv Private
1707 
        v = ValueOf(&priv)
1708 
        isValid(v.Elem().Field(0))
1709 
        isValid(v.Elem().Field(1))
1710 
        isValid(v.Elem().FieldByName("x"))
1711 
        isValid(v.Elem().FieldByName("y"))
1712 
        isValid(v.Type().Method(0).Func)
1713 
        shouldPanic(func() { v.Elem().Field(0).Interface() })
1714 
        shouldPanic(func() { v.Elem().Field(1).Interface() })
1715 
        shouldPanic(func() { v.Elem().FieldByName("x").Interface() })
1716 
        shouldPanic(func() { v.Elem().FieldByName("y").Interface() })
1717 
        shouldPanic(func() { v.Type().Method(0).Func.Interface() })
1718 
}
1719 
 
1720 
func shouldPanic(f func()) {
1721 
        defer func() {
1722 
                if recover() == nil {
1723 
                        panic("did not panic")
1724 
                }
1725 
        }()
1726 
        f()
1727 
}
1728 
 
1729 
func isNonNil(x interface{}) {
1730 
        if x == nil {
1731 
                panic("nil interface")
1732 
        }
1733 
}
1734 
 
1735 
func isValid(v Value) {
1736 
        if !v.IsValid() {
1737 
                panic("zero Value")
1738 
        }
1739 
}

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