| 1 | // Copyright 2014 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 buildutil_test |
| 6 | |
| 7 | import ( |
| 8 | "go/build" |
| 9 | "io/ioutil" |
| 10 | "os" |
| 11 | "path/filepath" |
| 12 | "runtime" |
| 13 | "strings" |
| 14 | "testing" |
| 15 | |
| 16 | "golang.org/x/tools/go/buildutil" |
| 17 | "golang.org/x/tools/go/packages/packagestest" |
| 18 | ) |
| 19 | |
| 20 | func TestContainingPackage(t *testing.T) { |
| 21 | if runtime.Compiler == "gccgo" { |
| 22 | t.Skip("gccgo has no GOROOT") |
| 23 | } |
| 24 | |
| 25 | exported := packagestest.Export(t, packagestest.GOPATH, []packagestest.Module{ |
| 26 | {Name: "golang.org/x/tools/go/buildutil", Files: packagestest.MustCopyFileTree(".")}}) |
| 27 | defer exported.Cleanup() |
| 28 | |
| 29 | goroot := runtime.GOROOT() |
| 30 | var gopath string |
| 31 | for _, env := range exported.Config.Env { |
| 32 | if !strings.HasPrefix(env, "GOPATH=") { |
| 33 | continue |
| 34 | } |
| 35 | gopath = strings.TrimPrefix(env, "GOPATH=") |
| 36 | } |
| 37 | if gopath == "" { |
| 38 | t.Fatal("Failed to fish GOPATH out of env: ", exported.Config.Env) |
| 39 | } |
| 40 | buildutildir := filepath.Join(gopath, "golang.org", "x", "tools", "go", "buildutil") |
| 41 | |
| 42 | type Test struct { |
| 43 | gopath, filename, wantPkg string |
| 44 | } |
| 45 | |
| 46 | tests := []Test{ |
| 47 | {gopath, goroot + "/src/fmt/print.go", "fmt"}, |
| 48 | {gopath, goroot + "/src/encoding/json/foo.go", "encoding/json"}, |
| 49 | {gopath, goroot + "/src/encoding/missing/foo.go", "(not found)"}, |
| 50 | {gopath, gopath + "/src/golang.org/x/tools/go/buildutil/util_test.go", |
| 51 | "golang.org/x/tools/go/buildutil"}, |
| 52 | } |
| 53 | |
| 54 | if runtime.GOOS != "windows" && runtime.GOOS != "plan9" { |
| 55 | // Make a symlink to gopath for test |
| 56 | tmp, err := ioutil.TempDir(os.TempDir(), "go") |
| 57 | if err != nil { |
| 58 | t.Errorf("Unable to create a temporary directory in %s", os.TempDir()) |
| 59 | } |
| 60 | |
| 61 | defer os.RemoveAll(tmp) |
| 62 | |
| 63 | // symlink between $GOPATH/src and /tmp/go/src |
| 64 | // in order to test all possible symlink cases |
| 65 | if err := os.Symlink(gopath+"/src", tmp+"/src"); err != nil { |
| 66 | t.Fatal(err) |
| 67 | } |
| 68 | tests = append(tests, []Test{ |
| 69 | {gopath, tmp + "/src/golang.org/x/tools/go/buildutil/util_test.go", "golang.org/x/tools/go/buildutil"}, |
| 70 | {tmp, gopath + "/src/golang.org/x/tools/go/buildutil/util_test.go", "golang.org/x/tools/go/buildutil"}, |
| 71 | {tmp, tmp + "/src/golang.org/x/tools/go/buildutil/util_test.go", "golang.org/x/tools/go/buildutil"}, |
| 72 | }...) |
| 73 | } |
| 74 | |
| 75 | for _, test := range tests { |
| 76 | var got string |
| 77 | var buildContext = build.Default |
| 78 | buildContext.GOPATH = test.gopath |
| 79 | bp, err := buildutil.ContainingPackage(&buildContext, buildutildir, test.filename) |
| 80 | if err != nil { |
| 81 | got = "(not found)" |
| 82 | } else { |
| 83 | got = bp.ImportPath |
| 84 | } |
| 85 | if got != test.wantPkg { |
| 86 | t.Errorf("ContainingPackage(%q) = %s, want %s", test.filename, got, test.wantPkg) |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | } |
| 91 |
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