Subversion Repositories openrisc

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package os_test

import (
        . "os"
        "reflect"
        "testing"
)

// testGetenv gives us a controlled set of variables for testing Expand.
func testGetenv(s string) string {
        switch s {
        case "*":
                return "all the args"
        case "#":
                return "NARGS"
        case "$":
                return "PID"
        case "1":
                return "ARGUMENT1"
        case "HOME":
                return "/usr/gopher"
        case "H":
                return "(Value of H)"
        case "home_1":
                return "/usr/foo"
        case "_":
                return "underscore"
        }
        return ""
}

var expandTests = []struct {
        in, out string
}{
        {"", ""},
        {"$*", "all the args"},
        {"$$", "PID"},
        {"${*}", "all the args"},
        {"$1", "ARGUMENT1"},
        {"${1}", "ARGUMENT1"},
        {"now is the time", "now is the time"},
        {"$HOME", "/usr/gopher"},
        {"$home_1", "/usr/foo"},
        {"${HOME}", "/usr/gopher"},
        {"${H}OME", "(Value of H)OME"},
        {"A$$$#$1$H$home_1*B", "APIDNARGSARGUMENT1(Value of H)/usr/foo*B"},
}

func TestExpand(t *testing.T) {
        for _, test := range expandTests {
                result := Expand(test.in, testGetenv)
                if result != test.out {
                        t.Errorf("Expand(%q)=%q; expected %q", test.in, result, test.out)
                }
        }
}

func TestConsistentEnviron(t *testing.T) {
        e0 := Environ()
        for i := 0; i < 10; i++ {
                e1 := Environ()
                if !reflect.DeepEqual(e0, e1) {
                        t.Fatalf("environment changed")
                }
        }
}