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eeb1663847
Enable the usetesting linter in golangci.yml configuration to enforce proper testing practices. Replace manual temporary directory and file creation with t.TempDir() in test files. This improves test reliability by ensuring proper cleanup and follows Go testing best practices. Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package root
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/coredns/caddy"
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"github.com/coredns/coredns/core/dnsserver"
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)
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func TestRoot(t *testing.T) {
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// Predefined error substrings
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parseErrContent := "Error during parsing:"
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unableToAccessErrContent := "unable to access root path"
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existingDirPath, err := getTempDirPath()
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if err != nil {
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t.Fatalf("BeforeTest: Failed to find an existing directory for testing! Error was: %v", err)
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}
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nonExistingDir := filepath.Join(existingDirPath, "highly_unlikely_to_exist_dir")
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existingFile, err := os.CreateTemp(t.TempDir(), "root_test")
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if err != nil {
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t.Fatalf("BeforeTest: Failed to create temp file for testing! Error was: %v", err)
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}
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defer func() {
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existingFile.Close()
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os.Remove(existingFile.Name())
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}()
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inaccessiblePath := getInaccessiblePath(existingFile.Name())
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tests := []struct {
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input string
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shouldErr bool
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expectedRoot string // expected root, set to the controller. Empty for negative cases.
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expectedErrContent string // substring from the expected error. Empty for positive cases.
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}{
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// positive
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{
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fmt.Sprintf(`root %s`, nonExistingDir), false, nonExistingDir, "",
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},
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{
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fmt.Sprintf(`root %s`, existingDirPath), false, existingDirPath, "",
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},
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// negative
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{
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`root `, true, "", parseErrContent,
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},
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{
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fmt.Sprintf(`root %s`, inaccessiblePath), true, "", unableToAccessErrContent,
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},
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{
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fmt.Sprintf(`root {
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%s
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}`, existingDirPath), true, "", parseErrContent,
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},
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}
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for i, test := range tests {
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c := caddy.NewTestController("dns", test.input)
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err := setup(c)
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cfg := dnsserver.GetConfig(c)
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if test.shouldErr && err == nil {
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t.Errorf("Test %d: Expected error but found %s for input %s", i, err, test.input)
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}
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if err != nil {
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if !test.shouldErr {
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t.Errorf("Test %d: Expected no error but found one for input %s. Error was: %v", i, test.input, err)
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}
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if !strings.Contains(err.Error(), test.expectedErrContent) {
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t.Errorf("Test %d: Expected error to contain: %v, found error: %v, input: %s", i, test.expectedErrContent, err, test.input)
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}
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}
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// check root only if we are in a positive test.
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if !test.shouldErr && test.expectedRoot != cfg.Root {
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t.Errorf("Root not correctly set for input %s. Expected: %s, actual: %s", test.input, test.expectedRoot, cfg.Root)
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}
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}
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}
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// getTempDirPath returns the path to the system temp directory. If it does not exist - an error is returned.
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func getTempDirPath() (string, error) {
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tempDir := os.TempDir()
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_, err := os.Stat(tempDir)
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if err != nil {
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return "", err
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}
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return tempDir, nil
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}
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func getInaccessiblePath(file string) string {
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return filepath.Join("C:", "file\x00name") // null byte in filename is not allowed on Windows AND unix
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}
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