Function TestLoadAndMergeConfig

docker/registries_d_test.go:130–224

(t *testing.T)

}

func TestLoadAndMergeConfig(t *testing.T) {
	tmpDir := t.TempDir()

	// No registries.d exists
	config, err := loadAndMergeConfig(filepath.Join(tmpDir, "thisdoesnotexist"))
	require.NoError(t, err)
	assert.Equal(t, &registryConfiguration{Docker: map[string]registryNamespace{}}, config)

	// Empty registries.d directory
	emptyDir := filepath.Join(tmpDir, "empty")
	err = os.Mkdir(emptyDir, 0755)
	require.NoError(t, err)
	config, err = loadAndMergeConfig(emptyDir)
	require.NoError(t, err)
	assert.Equal(t, &registryConfiguration{Docker: map[string]registryNamespace{}}, config)

	// Unreadable registries.d directory
	unreadableDir := filepath.Join(tmpDir, "unreadable")
	err = os.Mkdir(unreadableDir, 0000)
	require.NoError(t, err)
	_, err = loadAndMergeConfig(unreadableDir)
	assert.Error(t, err)

	// An unreadable file in a registries.d directory
	unreadableFileDir := filepath.Join(tmpDir, "unreadableFile")
	err = os.Mkdir(unreadableFileDir, 0755)
	require.NoError(t, err)
	err = os.WriteFile(filepath.Join(unreadableFileDir, "0.yaml"), []byte("{}"), 0644)
	require.NoError(t, err)
	err = os.WriteFile(filepath.Join(unreadableFileDir, "1.yaml"), nil, 0000)
	require.NoError(t, err)
	_, err = loadAndMergeConfig(unreadableFileDir)
	assert.Error(t, err)

	// Invalid YAML
	invalidYAMLDir := filepath.Join(tmpDir, "invalidYAML")
	err = os.Mkdir(invalidYAMLDir, 0755)
	require.NoError(t, err)
	err = os.WriteFile(filepath.Join(invalidYAMLDir, "0.yaml"), []byte("}"), 0644)
	require.NoError(t, err)
	_, err = loadAndMergeConfig(invalidYAMLDir)
	assert.Error(t, err)

	// Duplicate DefaultDocker
	duplicateDefault := filepath.Join(tmpDir, "duplicateDefault")
	err = os.Mkdir(duplicateDefault, 0755)
	require.NoError(t, err)
	err = os.WriteFile(filepath.Join(duplicateDefault, "0.yaml"),
		[]byte("default-docker:\n lookaside: file:////tmp/something"), 0644)
	require.NoError(t, err)
	err = os.WriteFile(filepath.Join(duplicateDefault, "1.yaml"),
		[]byte("default-docker:\n lookaside: file:////tmp/different"), 0644)
	require.NoError(t, err)
	_, err = loadAndMergeConfig(duplicateDefault)
	assert.ErrorContains(t, err, "0.yaml")
	assert.ErrorContains(t, err, "1.yaml")

	// Duplicate DefaultDocker