| 1 | // Copyright 2022 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 checker_test |
| 6 | |
| 7 | import ( |
| 8 | "flag" |
| 9 | "io/ioutil" |
| 10 | "os" |
| 11 | "os/exec" |
| 12 | "path" |
| 13 | "runtime" |
| 14 | "testing" |
| 15 | |
| 16 | "golang.org/x/tools/go/analysis" |
| 17 | "golang.org/x/tools/go/analysis/analysistest" |
| 18 | "golang.org/x/tools/go/analysis/internal/checker" |
| 19 | "golang.org/x/tools/internal/testenv" |
| 20 | ) |
| 21 | |
| 22 | func main() { |
| 23 | checker.Fix = true |
| 24 | patterns := flag.Args() |
| 25 | |
| 26 | code := checker.Run(patterns, []*analysis.Analyzer{analyzer}) |
| 27 | os.Exit(code) |
| 28 | } |
| 29 | |
| 30 | // TestFixes ensures that checker.Run applies fixes correctly. |
| 31 | // This test fork/execs the main function above. |
| 32 | func TestFixes(t *testing.T) { |
| 33 | oses := map[string]bool{"darwin": true, "linux": true} |
| 34 | if !oses[runtime.GOOS] { |
| 35 | t.Skipf("skipping fork/exec test on this platform") |
| 36 | } |
| 37 | |
| 38 | if os.Getenv("TESTFIXES_CHILD") == "1" { |
| 39 | // child process |
| 40 | |
| 41 | // replace [progname -test.run=TestFixes -- ...] |
| 42 | // by [progname ...] |
| 43 | os.Args = os.Args[2:] |
| 44 | os.Args[0] = "vet" |
| 45 | main() |
| 46 | panic("unreachable") |
| 47 | } |
| 48 | |
| 49 | testenv.NeedsTool(t, "go") |
| 50 | |
| 51 | files := map[string]string{ |
| 52 | "rename/foo.go": `package rename |
| 53 | |
| 54 | func Foo() { |
| 55 | bar := 12 |
| 56 | _ = bar |
| 57 | } |
| 58 | |
| 59 | // the end |
| 60 | `, |
| 61 | "rename/intestfile_test.go": `package rename |
| 62 | |
| 63 | func InTestFile() { |
| 64 | bar := 13 |
| 65 | _ = bar |
| 66 | } |
| 67 | |
| 68 | // the end |
| 69 | `, |
| 70 | "rename/foo_test.go": `package rename_test |
| 71 | |
| 72 | func Foo() { |
| 73 | bar := 14 |
| 74 | _ = bar |
| 75 | } |
| 76 | |
| 77 | // the end |
| 78 | `, |
| 79 | } |
| 80 | fixed := map[string]string{ |
| 81 | "rename/foo.go": `package rename |
| 82 | |
| 83 | func Foo() { |
| 84 | baz := 12 |
| 85 | _ = baz |
| 86 | } |
| 87 | |
| 88 | // the end |
| 89 | `, |
| 90 | "rename/intestfile_test.go": `package rename |
| 91 | |
| 92 | func InTestFile() { |
| 93 | baz := 13 |
| 94 | _ = baz |
| 95 | } |
| 96 | |
| 97 | // the end |
| 98 | `, |
| 99 | "rename/foo_test.go": `package rename_test |
| 100 | |
| 101 | func Foo() { |
| 102 | baz := 14 |
| 103 | _ = baz |
| 104 | } |
| 105 | |
| 106 | // the end |
| 107 | `, |
| 108 | } |
| 109 | dir, cleanup, err := analysistest.WriteFiles(files) |
| 110 | if err != nil { |
| 111 | t.Fatalf("Creating test files failed with %s", err) |
| 112 | } |
| 113 | defer cleanup() |
| 114 | |
| 115 | args := []string{"-test.run=TestFixes", "--", "rename"} |
| 116 | cmd := exec.Command(os.Args[0], args...) |
| 117 | cmd.Env = append(os.Environ(), "TESTFIXES_CHILD=1", "GOPATH="+dir, "GO111MODULE=off", "GOPROXY=off") |
| 118 | |
| 119 | out, err := cmd.CombinedOutput() |
| 120 | if len(out) > 0 { |
| 121 | t.Logf("%s: out=<<%s>>", args, out) |
| 122 | } |
| 123 | var exitcode int |
| 124 | if err, ok := err.(*exec.ExitError); ok { |
| 125 | exitcode = err.ExitCode() // requires go1.12 |
| 126 | } |
| 127 | |
| 128 | const diagnosticsExitCode = 3 |
| 129 | if exitcode != diagnosticsExitCode { |
| 130 | t.Errorf("%s: exited %d, want %d", args, exitcode, diagnosticsExitCode) |
| 131 | } |
| 132 | |
| 133 | for name, want := range fixed { |
| 134 | path := path.Join(dir, "src", name) |
| 135 | contents, err := ioutil.ReadFile(path) |
| 136 | if err != nil { |
| 137 | t.Errorf("error reading %s: %v", path, err) |
| 138 | } |
| 139 | if got := string(contents); got != want { |
| 140 | t.Errorf("contents of %s file did not match expectations. got=%s, want=%s", path, got, want) |
| 141 | } |
| 142 | } |
| 143 | } |
| 144 |
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