diff options
Diffstat (limited to 'vendor/github.com/golang/protobuf/proto/testdata/golden_test.go')
-rw-r--r-- | vendor/github.com/golang/protobuf/proto/testdata/golden_test.go | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go b/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go new file mode 100644 index 000000000..7172d0e96 --- /dev/null +++ b/vendor/github.com/golang/protobuf/proto/testdata/golden_test.go @@ -0,0 +1,86 @@ +// Go support for Protocol Buffers - Google's data interchange format +// +// Copyright 2012 The Go Authors. All rights reserved. +// https://github.com/golang/protobuf +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Verify that the compiler output for test.proto is unchanged. + +package testdata + +import ( + "crypto/sha1" + "fmt" + "io/ioutil" + "os" + "os/exec" + "path/filepath" + "testing" +) + +// sum returns in string form (for easy comparison) the SHA-1 hash of the named file. +func sum(t *testing.T, name string) string { + data, err := ioutil.ReadFile(name) + if err != nil { + t.Fatal(err) + } + t.Logf("sum(%q): length is %d", name, len(data)) + hash := sha1.New() + _, err = hash.Write(data) + if err != nil { + t.Fatal(err) + } + return fmt.Sprintf("% x", hash.Sum(nil)) +} + +func run(t *testing.T, name string, args ...string) { + cmd := exec.Command(name, args...) + cmd.Stdin = os.Stdin + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + err := cmd.Run() + if err != nil { + t.Fatal(err) + } +} + +func TestGolden(t *testing.T) { + // Compute the original checksum. + goldenSum := sum(t, "test.pb.go") + // Run the proto compiler. + run(t, "protoc", "--go_out="+os.TempDir(), "test.proto") + newFile := filepath.Join(os.TempDir(), "test.pb.go") + defer os.Remove(newFile) + // Compute the new checksum. + newSum := sum(t, newFile) + // Verify + if newSum != goldenSum { + run(t, "diff", "-u", "test.pb.go", newFile) + t.Fatal("Code generated by protoc-gen-go has changed; update test.pb.go") + } +} |