diff options
Diffstat (limited to 'src/cmd/gofmt/gofmt_test.go')
-rw-r--r-- | src/cmd/gofmt/gofmt_test.go | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/cmd/gofmt/gofmt_test.go b/src/cmd/gofmt/gofmt_test.go new file mode 100644 index 000000000..4ec94e293 --- /dev/null +++ b/src/cmd/gofmt/gofmt_test.go @@ -0,0 +1,81 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package main + +import ( + "bytes" + "io/ioutil" + "path/filepath" + "strings" + "testing" +) + + +func runTest(t *testing.T, dirname, in, out, flags string) { + in = filepath.Join(dirname, in) + out = filepath.Join(dirname, out) + + // process flags + *simplifyAST = false + *rewriteRule = "" + for _, flag := range strings.Split(flags, " ", -1) { + elts := strings.Split(flag, "=", 2) + name := elts[0] + value := "" + if len(elts) == 2 { + value = elts[1] + } + switch name { + case "": + // no flags + case "-r": + *rewriteRule = value + case "-s": + *simplifyAST = true + default: + t.Errorf("unrecognized flag name: %s", name) + } + } + + initParserMode() + initPrinterMode() + initRewrite() + + var buf bytes.Buffer + err := processFile(in, nil, &buf) + if err != nil { + t.Error(err) + return + } + + expected, err := ioutil.ReadFile(out) + if err != nil { + t.Error(err) + return + } + + if got := buf.Bytes(); bytes.Compare(got, expected) != 0 { + t.Errorf("(gofmt %s) != %s (see %s.gofmt)", in, out, in) + ioutil.WriteFile(in+".gofmt", got, 0666) + } +} + + +// TODO(gri) Add more test cases! +var tests = []struct { + dirname, in, out, flags string +}{ + {".", "gofmt.go", "gofmt.go", ""}, + {".", "gofmt_test.go", "gofmt_test.go", ""}, + {"testdata", "composites.input", "composites.golden", "-s"}, + {"testdata", "rewrite1.input", "rewrite1.golden", "-r=Foo->Bar"}, +} + + +func TestRewrite(t *testing.T) { + for _, test := range tests { + runTest(t, test.dirname, test.in, test.out, test.flags) + } +} |