k8s.io/registry.k8s.io@v0.3.1/internal/integration/paths.go (about)

     1  /*
     2  Copyright 2022 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package integration
    18  
    19  import (
    20  	"errors"
    21  	"os"
    22  	"path/filepath"
    23  )
    24  
    25  func ModuleRootDir() (string, error) {
    26  	return moduleRootDir(os.Getwd)
    27  }
    28  
    29  func moduleRootDir(getWD func() (string, error)) (string, error) {
    30  	// in a test, the working directory will be the test package source dir
    31  	wd, err := getWD()
    32  	if err != nil {
    33  		return "", err
    34  	}
    35  	// walk upwards looking for module file
    36  	currDir := wd
    37  	for {
    38  		// stop at first existing go.mod
    39  		_, err := os.Stat(filepath.Join(currDir, "go.mod"))
    40  		if err == nil {
    41  			return currDir, nil
    42  		}
    43  		// if we get back the same path, we've hit the disk / volume root
    44  		nextDir := filepath.Dir(currDir)
    45  		if nextDir == currDir {
    46  			return "", errors.New("walked to disk root without finding module root")
    47  		}
    48  		currDir = nextDir
    49  	}
    50  }