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- 'use strict';
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- exports.buildSnapshotResolver = exports.isSnapshotPath = exports.DOT_EXTENSION = exports.EXTENSION = void 0;
- var _path = _interopRequireDefault(require('path'));
- var _chalk = _interopRequireDefault(require('chalk'));
- function _interopRequireDefault(obj) {
- return obj && obj.__esModule ? obj : {default: obj};
- }
- /**
- * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
- const EXTENSION = 'snap';
- exports.EXTENSION = EXTENSION;
- const DOT_EXTENSION = '.' + EXTENSION;
- exports.DOT_EXTENSION = DOT_EXTENSION;
- const isSnapshotPath = path => path.endsWith(DOT_EXTENSION);
- exports.isSnapshotPath = isSnapshotPath;
- const cache = new Map();
- const buildSnapshotResolver = config => {
- const key = config.rootDir;
- if (!cache.has(key)) {
- cache.set(key, createSnapshotResolver(config.snapshotResolver));
- }
- return cache.get(key);
- };
- exports.buildSnapshotResolver = buildSnapshotResolver;
- function createSnapshotResolver(snapshotResolverPath) {
- return typeof snapshotResolverPath === 'string'
- ? createCustomSnapshotResolver(snapshotResolverPath)
- : createDefaultSnapshotResolver();
- }
- function createDefaultSnapshotResolver() {
- return {
- resolveSnapshotPath: testPath =>
- _path.default.join(
- _path.default.join(_path.default.dirname(testPath), '__snapshots__'),
- _path.default.basename(testPath) + DOT_EXTENSION
- ),
- resolveTestPath: snapshotPath =>
- _path.default.resolve(
- _path.default.dirname(snapshotPath),
- '..',
- _path.default.basename(snapshotPath, DOT_EXTENSION)
- ),
- testPathForConsistencyCheck: _path.default.posix.join(
- 'consistency_check',
- '__tests__',
- 'example.test.js'
- )
- };
- }
- function createCustomSnapshotResolver(snapshotResolverPath) {
- const custom = require(snapshotResolverPath);
- const keys = [
- ['resolveSnapshotPath', 'function'],
- ['resolveTestPath', 'function'],
- ['testPathForConsistencyCheck', 'string']
- ];
- keys.forEach(([propName, requiredType]) => {
- if (typeof custom[propName] !== requiredType) {
- throw new TypeError(mustImplement(propName, requiredType));
- }
- });
- const customResolver = {
- resolveSnapshotPath: testPath =>
- custom.resolveSnapshotPath(testPath, DOT_EXTENSION),
- resolveTestPath: snapshotPath =>
- custom.resolveTestPath(snapshotPath, DOT_EXTENSION),
- testPathForConsistencyCheck: custom.testPathForConsistencyCheck
- };
- verifyConsistentTransformations(customResolver);
- return customResolver;
- }
- function mustImplement(propName, requiredType) {
- return (
- _chalk.default.bold(
- `Custom snapshot resolver must implement a \`${propName}\` as a ${requiredType}.`
- ) +
- '\nDocumentation: https://facebook.github.io/jest/docs/en/configuration.html#snapshotResolver'
- );
- }
- function verifyConsistentTransformations(custom) {
- const resolvedSnapshotPath = custom.resolveSnapshotPath(
- custom.testPathForConsistencyCheck
- );
- const resolvedTestPath = custom.resolveTestPath(resolvedSnapshotPath);
- if (resolvedTestPath !== custom.testPathForConsistencyCheck) {
- throw new Error(
- _chalk.default.bold(
- `Custom snapshot resolver functions must transform paths consistently, i.e. expects resolveTestPath(resolveSnapshotPath('${custom.testPathForConsistencyCheck}')) === ${resolvedTestPath}`
- )
- );
- }
- }
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