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

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Line No. Rev Author Line
1 747 jeremybenn 
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package token
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import (
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        "bytes"
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        "encoding/gob"
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        "fmt"
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        "testing"
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)
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// equal returns nil if p and q describe the same file set;
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// otherwise it returns an error describing the discrepancy.
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func equal(p, q *FileSet) error {
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        if p == q {
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                // avoid deadlock if p == q
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                return nil
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        }
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        // not strictly needed for the test
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        p.mutex.Lock()
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        q.mutex.Lock()
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        defer q.mutex.Unlock()
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        defer p.mutex.Unlock()
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        if p.base != q.base {
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                return fmt.Errorf("different bases: %d != %d", p.base, q.base)
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        }
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        if len(p.files) != len(q.files) {
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                return fmt.Errorf("different number of files: %d != %d", len(p.files), len(q.files))
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        }
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        for i, f := range p.files {
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                g := q.files[i]
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                if f.set != p {
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                        return fmt.Errorf("wrong fileset for %q", f.name)
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                }
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                if g.set != q {
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                        return fmt.Errorf("wrong fileset for %q", g.name)
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                }
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                if f.name != g.name {
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                        return fmt.Errorf("different filenames: %q != %q", f.name, g.name)
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                }
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                if f.base != g.base {
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                        return fmt.Errorf("different base for %q: %d != %d", f.name, f.base, g.base)
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                }
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                if f.size != g.size {
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                        return fmt.Errorf("different size for %q: %d != %d", f.name, f.size, g.size)
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                }
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                for j, l := range f.lines {
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                        m := g.lines[j]
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                        if l != m {
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                                return fmt.Errorf("different offsets for %q", f.name)
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                        }
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                }
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                for j, l := range f.infos {
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                        m := g.infos[j]
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                        if l.Offset != m.Offset || l.Filename != m.Filename || l.Line != m.Line {
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                                return fmt.Errorf("different infos for %q", f.name)
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                        }
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                }
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        }
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        // we don't care about .last - it's just a cache
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        return nil
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}
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func checkSerialize(t *testing.T, p *FileSet) {
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        var buf bytes.Buffer
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        encode := func(x interface{}) error {
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                return gob.NewEncoder(&buf).Encode(x)
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        }
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        if err := p.Write(encode); err != nil {
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                t.Errorf("writing fileset failed: %s", err)
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                return
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        }
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        q := NewFileSet()
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        decode := func(x interface{}) error {
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                return gob.NewDecoder(&buf).Decode(x)
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        }
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        if err := q.Read(decode); err != nil {
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                t.Errorf("reading fileset failed: %s", err)
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                return
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        }
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        if err := equal(p, q); err != nil {
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                t.Errorf("filesets not identical: %s", err)
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        }
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}
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func TestSerialization(t *testing.T) {
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        p := NewFileSet()
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        checkSerialize(t, p)
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        // add some files
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        for i := 0; i < 10; i++ {
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                f := p.AddFile(fmt.Sprintf("file%d", i), p.Base()+i, i*100)
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                checkSerialize(t, p)
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                // add some lines and alternative file infos
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                line := 1000
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                for offs := 0; offs < f.Size(); offs += 40 + i {
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                        f.AddLine(offs)
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                        if offs%7 == 0 {
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                                f.AddLineInfo(offs, fmt.Sprintf("file%d", offs), line)
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                                line += 33
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                        }
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                }
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                checkSerialize(t, p)
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        }
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}

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