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cacheContext-option.test.js
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/
cacheContext-option.test.js
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const path = require('path');
const normalizePath = require('normalize-path');
const BJSON = require('buffer-json');
const { webpack } = require('./helpers');
const mockCacheLoaderWriteFn = jest.fn();
const mockBaseWebpackConfig = {
loader: {
options: {
write: (cacheKey, cacheData, callback) => {
mockCacheLoaderWriteFn(cacheKey, cacheData, callback);
callback(null, ...cacheData.result);
},
},
},
};
const mockRelativeWebpackConfig = {
loader: {
options: {
cacheContext: path.resolve('.'),
write: (cacheKey, cacheData, callback) => {
mockCacheLoaderWriteFn(cacheKey, cacheData, callback);
callback(null, ...cacheData.result);
},
},
},
};
const sortData = (a, b) => {
if (a.remainingRequest < b.remainingRequest) {
return -1;
}
if (a.remainingRequest > b.remainingRequest) {
return 1;
}
return 0;
};
const buildSnapshotReadyDeps = (deps) =>
deps.map((dep) => Object.assign({}, dep, { mtime: null, path: dep.path }));
const buildCacheLoaderCallsData = (calls) =>
Array.from(
calls
.reduce((builtCalls, call) => {
const [, rawData] = call;
return builtCalls.set(rawData.remainingRequest, {
...rawData,
remainingRequest: rawData.remainingRequest,
dependencies: buildSnapshotReadyDeps(rawData.dependencies),
contextDependencies: buildSnapshotReadyDeps(
rawData.contextDependencies
),
});
}, new Map())
.values()
).sort(sortData);
describe('cacheContext option', () => {
it('should generate relative paths to the project root', async () => {
const testId = './basic/index.js';
const stats = await webpack(testId, mockRelativeWebpackConfig);
const cacheLoaderCallsData = buildCacheLoaderCallsData(
mockCacheLoaderWriteFn.mock.calls
);
expect(
cacheLoaderCallsData.every(
(call) => !call.remainingRequest.includes(path.resolve('.'))
)
).toBeTruthy();
expect(BJSON.stringify(cacheLoaderCallsData, 2)).toMatchSnapshot(
'generated cache-loader data'
);
expect(stats.compilation.warnings).toMatchSnapshot('warnings');
expect(stats.compilation.errors).toMatchSnapshot('errors');
});
it('should generate normalized relative paths to the project root', async () => {
const testId = './basic/index.js';
await webpack(testId, mockRelativeWebpackConfig);
const cacheLoaderCallsData = buildCacheLoaderCallsData(
mockCacheLoaderWriteFn.mock.calls
);
expect(
cacheLoaderCallsData.every(
(call) => call.remainingRequest === normalizePath(call.remainingRequest)
)
).toBeTruthy();
});
it('should generate absolute paths to the project root', async () => {
const testId = './basic/index.js';
const stats = await webpack(testId, mockBaseWebpackConfig);
const cacheLoaderCallsData = buildCacheLoaderCallsData(
mockCacheLoaderWriteFn.mock.calls
);
expect(
cacheLoaderCallsData.every((call) =>
call.remainingRequest.includes(path.resolve('.'))
)
).toBeFalsy();
expect(stats.compilation.warnings).toMatchSnapshot('warnings');
expect(stats.compilation.errors).toMatchSnapshot('errors');
});
it('should load as a raw loader to support images', async () => {
const testId = './img/index.js';
const stats = await webpack(testId, mockBaseWebpackConfig);
const cacheLoaderCallsData = buildCacheLoaderCallsData(
mockCacheLoaderWriteFn.mock.calls
);
expect(
cacheLoaderCallsData.every((call) => Buffer.isBuffer(call.result[0]))
);
expect(stats.compilation.warnings).toMatchSnapshot('warnings');
expect(stats.compilation.errors).toMatchSnapshot('errors');
});
});