87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
package builder
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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)
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const (
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dockerfileContents = "FROM busybox"
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dockerignoreFilename = ".dockerignore"
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testfileContents = "test"
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)
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// createTestTempDir creates a temporary directory for testing.
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// It returns the created path and a cleanup function which is meant to be used as deferred call.
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// When an error occurs, it terminates the test.
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func createTestTempDir(t *testing.T, dir, prefix string) (string, func()) {
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path, err := ioutil.TempDir(dir, prefix)
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if err != nil {
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t.Fatalf("Error when creating directory %s with prefix %s: %s", dir, prefix, err)
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}
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return path, func() {
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err = os.RemoveAll(path)
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if err != nil {
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t.Fatalf("Error when removing directory %s: %s", path, err)
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}
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}
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}
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// createTestTempSubdir creates a temporary directory for testing.
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// It returns the created path but doesn't provide a cleanup function,
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// so createTestTempSubdir should be used only for creating temporary subdirectories
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// whose parent directories are properly cleaned up.
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// When an error occurs, it terminates the test.
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func createTestTempSubdir(t *testing.T, dir, prefix string) string {
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path, err := ioutil.TempDir(dir, prefix)
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if err != nil {
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t.Fatalf("Error when creating directory %s with prefix %s: %s", dir, prefix, err)
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}
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return path
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}
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// createTestTempFile creates a temporary file within dir with specific contents and permissions.
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// When an error occurs, it terminates the test
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func createTestTempFile(t *testing.T, dir, filename, contents string, perm os.FileMode) string {
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filePath := filepath.Join(dir, filename)
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err := ioutil.WriteFile(filePath, []byte(contents), perm)
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if err != nil {
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t.Fatalf("Error when creating %s file: %s", filename, err)
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}
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return filePath
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}
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// chdir changes current working directory to dir.
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// It returns a function which changes working directory back to the previous one.
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// This function is meant to be executed as a deferred call.
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// When an error occurs, it terminates the test.
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func chdir(t *testing.T, dir string) func() {
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workingDirectory, err := os.Getwd()
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if err != nil {
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t.Fatalf("Error when retrieving working directory: %s", err)
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}
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err = os.Chdir(dir)
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if err != nil {
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t.Fatalf("Error when changing directory to %s: %s", dir, err)
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}
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return func() {
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err = os.Chdir(workingDirectory)
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if err != nil {
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t.Fatalf("Error when changing back to working directory (%s): %s", workingDirectory, err)
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}
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}
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}
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