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// Copyright 2017 Google LLC. 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License 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 testonly
import (
"path"
"path/filepath"
"runtime"
)
// RelativeToPackage returns the input path p as an absolute path, resolved relative to the caller's package.
// The working directory for Go tests is the dir of the test file. Using "plain" relative paths in test
// utilities is, therefore, brittle, as the directory structure may change depending on where the tests are placed.
func RelativeToPackage(p string) string {
_, file, _, ok := runtime.Caller(1)
if !ok {
panic("cannot get caller information")
}
absPath, err := filepath.Abs(filepath.Join(path.Dir(file), p))
if err != nil {
panic(err)
}
return absPath
}
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