golang.org/x/tools@v0.21.0/cmd/bundle/main_test.go (about) 1 // Copyright 2015 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 main 6 7 import ( 8 "bytes" 9 "os" 10 "os/exec" 11 "runtime" 12 "testing" 13 14 "golang.org/x/tools/go/packages/packagestest" 15 ) 16 17 func TestBundle(t *testing.T) { packagestest.TestAll(t, testBundle) } 18 func testBundle(t *testing.T, x packagestest.Exporter) { 19 load := func(name string) string { 20 data, err := os.ReadFile(name) 21 if err != nil { 22 t.Fatal(err) 23 } 24 return string(data) 25 } 26 27 e := packagestest.Export(t, x, []packagestest.Module{ 28 { 29 Name: "initial", 30 Files: map[string]interface{}{ 31 "a.go": load("testdata/src/initial/a.go"), 32 "b.go": load("testdata/src/initial/b.go"), 33 "c.go": load("testdata/src/initial/c.go"), 34 }, 35 }, 36 { 37 Name: "domain.name/importdecl", 38 Files: map[string]interface{}{ 39 "p.go": load("testdata/src/domain.name/importdecl/p.go"), 40 }, 41 }, 42 }) 43 defer e.Cleanup() 44 testingOnlyPackagesConfig = e.Config 45 46 os.Args = os.Args[:1] // avoid e.g. -test=short in the output 47 out, err := bundle("initial", "github.com/dest", "dest", "prefix", "tag") 48 if err != nil { 49 t.Fatal(err) 50 } 51 52 if got, want := string(out), load("testdata/out.golden"); got != want { 53 t.Errorf("-- got --\n%s\n-- want --\n%s\n-- diff --", got, want) 54 55 if err := os.WriteFile("testdata/out.got", out, 0644); err != nil { 56 t.Fatal(err) 57 } 58 t.Log(diff("testdata/out.golden", "testdata/out.got")) 59 } 60 } 61 62 func diff(a, b string) string { 63 var cmd *exec.Cmd 64 switch runtime.GOOS { 65 case "plan9": 66 cmd = exec.Command("/bin/diff", "-c", a, b) 67 default: 68 cmd = exec.Command("/usr/bin/diff", "-u", a, b) 69 } 70 var out bytes.Buffer 71 cmd.Stdout = &out 72 cmd.Stderr = &out 73 cmd.Run() // nonzero exit is expected 74 if out.Len() == 0 { 75 return "(failed to compute diff)" 76 } 77 return out.String() 78 }