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