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license_test.go
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license_test.go
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// Copyright 2018 Twitch Interactive, Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may not
// use this file except in compliance with the License. A copy of the License is
// located at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// or in the "license" file accompanying this file. This file is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
package twirp
import (
"bytes"
"io"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strings"
"testing"
)
var headerCopyright = regexp.MustCompile(`// Copyright \d{4} Twitch Interactive, Inc. All Rights Reserved.`)
const headerLicense = `
// Licensed under the Apache License, Version 2.0 (the "License"). You may not
// use this file except in compliance with the License. A copy of the License is
// located at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// or in the "license" file accompanying this file. This file is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
`
var generatedCodeMatcher = regexp.MustCompile("// Code generated .* DO NOT EDIT")
func TestSourceCodeLicenseHeaders(t *testing.T) {
err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if path == "_tools" || path == "vendor" {
return filepath.SkipDir
}
if !strings.HasSuffix(path, ".go") {
// Skip non-go files.
return nil
}
if strings.HasSuffix(path, ".twirp.go") || strings.HasSuffix(path, ".pb.go") {
return nil
}
file, err := os.Open(path)
if err != nil {
return err
}
fileBytes, err := ioutil.ReadAll(file)
if err != nil {
return err
}
fileBuf := bytes.NewReader(fileBytes)
if generatedCodeMatcher.MatchReader(fileBuf) {
// Skip generated files.
return nil
}
_, err = fileBuf.Seek(0, io.SeekStart)
if err != nil {
return err
}
if !headerCopyright.MatchReader(fileBuf) {
t.Errorf("%v is missing licensing header", path)
return nil
}
if !bytes.Contains(fileBytes, []byte(headerLicense)) {
t.Errorf("%v is missing licensing header", path)
}
return nil
})
if err != nil {
t.Fatalf("error scanning directory for source code files: %v", err)
}
}