install-nix-action/node_modules/jest-snapshot/build/snapshot_resolver.js
Domen Kožar 70742d22d9
v6
2019-11-19 17:50:30 +01:00

117 lines
3.5 KiB
JavaScript

'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}`
)
);
}
}