.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201105173854-bc9fc8d8c4bc/cmd/bundle/main_test.go

   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         "io/ioutil"
  10         "os"
  11         "os/exec"
  12         "runtime"
  13         "testing"
  14
  15         "golang.org/x/tools/go/packages/packagestest"
  16 )
  17
  18 func TestBundle(t *testing.T) { packagestest.TestAll(t, testBundle) }
  19 func testBundle(t *testing.T, x packagestest.Exporter) {
  20         load := func(name string) string {
  21                 data, err := ioutil.ReadFile(name)
  22                 if err != nil {
  23                         t.Fatal(err)
  24                 }
  25                 return string(data)
  26         }
  27
  28         e := packagestest.Export(t, x, []packagestest.Module{
  29                 {
  30                         Name: "initial",
  31                         Files: map[string]interface{}{
  32                                 "a.go": load("testdata/src/initial/a.go"),
  33                                 "b.go": load("testdata/src/initial/b.go"),
  34                                 "c.go": load("testdata/src/initial/c.go"),
  35                         },
  36                 },
  37                 {
  38                         Name: "domain.name/importdecl",
  39                         Files: map[string]interface{}{
  40                                 "p.go": load("testdata/src/domain.name/importdecl/p.go"),
  41                         },
  42                 },
  43         })
  44         defer e.Cleanup()
  45         testingOnlyPackagesConfig = e.Config
  46
  47         os.Args = os.Args[:1] // avoid e.g. -test=short in the output
  48         out, err := bundle("initial", "github.com/dest", "dest", "prefix", "tag")
  49         if err != nil {
  50                 t.Fatal(err)
  51         }
  52
  53         if got, want := string(out), load("testdata/out.golden"); got != want {
  54                 t.Errorf("-- got --\n%s\n-- want --\n%s\n-- diff --", got, want)
  55
  56                 if err := ioutil.WriteFile("testdata/out.got", out, 0644); err != nil {
  57                         t.Fatal(err)
  58                 }
  59                 t.Log(diff("testdata/out.golden", "testdata/out.got"))
  60         }
  61 }
  62
  63 func diff(a, b string) string {
  64         var cmd *exec.Cmd
  65         switch runtime.GOOS {
  66         case "plan9":
  67                 cmd = exec.Command("/bin/diff", "-c", a, b)
  68         default:
  69                 cmd = exec.Command("/usr/bin/diff", "-u", a, b)
  70         }
  71         var out bytes.Buffer
  72         cmd.Stdout = &out
  73         cmd.Stderr = &out
  74         cmd.Run() // nonzero exit is expected
  75         if out.Len() == 0 {
  76                 return "(failed to compute diff)"
  77         }
  78         return out.String()
  79 }