mirror of
https://github.com/golang/go
synced 2024-09-30 16:18:35 -06:00
99be5a0b85
Resolve symlinks in source directories (GOPATH, GOROOT, etc.) and source files in order to find correct package. All I/O performed through build.Context. Also add minor fix to guru unit tests in order to pass on Windows. Change-Id: Ie6134b9cd74eb7386e1d93603eb37c8e44b083b8 Reviewed-on: https://go-review.googlesource.com/33924 Reviewed-by: Alan Donovan <adonovan@google.com>
106 lines
3.4 KiB
Go
106 lines
3.4 KiB
Go
// Copyright 2013 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 main
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import (
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"fmt"
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"go/build"
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"io/ioutil"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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"testing"
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)
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// Unit tests for internal guru functions
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func TestIssue17515(t *testing.T) {
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// Tests handling of symlinks in function guessImportPath
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// If we have Go code inside $HOME/go/src and create a symlink $HOME/src to it
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// there are 4 possible cases that need to be tested:
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// (1) absolute & absolute: GOPATH=$HOME/go/src file=$HOME/go/src/test/test.go
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// (2) absolute & symlink: GOPATH=$HOME/go/src file=$HOME/src/test/test.go
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// (3) symlink & symlink: GOPATH=$HOME/src file=$HOME/src/test/test.go
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// (4) symlink & absolute: GOPATH=$HOME/src file= $HOME/go/src/test/test.go
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// Create a temporary home directory under /tmp
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home, err := ioutil.TempDir(os.TempDir(), "home")
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if err != nil {
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t.Errorf("Unable to create a temporary directory in %s", os.TempDir())
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}
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defer os.RemoveAll(home)
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// create filepath /tmp/home/go/src/test/test.go
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if err = os.MkdirAll(home+"/go/src/test", 0755); err != nil {
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t.Fatal(err)
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}
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var buildContext = build.Default
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// Success test cases
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type SuccessTest struct {
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gopath, filename, wantSrcdir string
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}
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successTests := []SuccessTest{
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{home + "/go", home + "/go/src/test/test.go", filepath.FromSlash(home + "/go/src")},
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}
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// Add symlink cases if not on Windows, Plan 9
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if runtime.GOOS != "windows" && runtime.GOOS != "plan9" {
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// symlink between /tmp/home/go/src and /tmp/home/src
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if err := os.Symlink(home+"/go/src", home+"/src"); err != nil {
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t.Fatal(err)
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}
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successTests = append(successTests, []SuccessTest{
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{home + "/go", home + "/src/test/test.go", filepath.FromSlash(home + "/go/src")},
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{home, home + "/go/src/test/test.go", filepath.FromSlash(home + "/src")},
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{home, home + "/src/test/test.go", filepath.FromSlash(home + "/src")},
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}...)
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}
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for _, test := range successTests {
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buildContext.GOPATH = test.gopath
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srcdir, importPath, err := guessImportPath(test.filename, &buildContext)
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if srcdir != test.wantSrcdir || importPath != "test" || err != nil {
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t.Errorf("guessImportPath(%q, %q) = %q, %q, %q; want %q, %q, %q",
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test.filename, test.gopath, srcdir, importPath, err, test.wantSrcdir, "test", "nil")
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}
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}
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// Function to format expected error message
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errFormat := func(fpath string) string {
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return fmt.Sprintf("can't evaluate symlinks of %s", fpath)
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}
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// Failure test cases
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type FailTest struct {
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gopath, filename, wantErr string
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}
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failTests := []FailTest{
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{home + "/go", home + "/go/src/fake/test.go", errFormat(filepath.FromSlash(home + "/go/src/fake"))},
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}
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if runtime.GOOS != "windows" && runtime.GOOS != "plan9" {
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failTests = append(failTests, []FailTest{
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{home + "/go", home + "/src/fake/test.go", errFormat(filepath.FromSlash(home + "/src/fake"))},
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{home, home + "/src/fake/test.go", errFormat(filepath.FromSlash(home + "/src/fake"))},
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{home, home + "/go/src/fake/test.go", errFormat(filepath.FromSlash(home + "/go/src/fake"))},
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}...)
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}
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for _, test := range failTests {
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buildContext.GOPATH = test.gopath
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srcdir, importPath, err := guessImportPath(test.filename, &buildContext)
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if !strings.HasPrefix(fmt.Sprint(err), test.wantErr) {
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t.Errorf("guessImportPath(%q, %q) = %q, %q, %q; want %q, %q, %q",
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test.filename, test.gopath, srcdir, importPath, err, "", "", test.wantErr)
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}
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}
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}
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