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a637084320
Numbers in JavaScript can have precision issues due to how they are encoded. This shows up in snapshot tests sometimes with values like 0.0009999999999999992, which makes the tests hard to read and visually diff. This PR adds a new snapshot serializers which clamps numbers at 3 decimal points (e.g. the above number 0.0009999999999999992 is serialized as 0.001). This new serializer does not impact non-numeric values, integers, and special numbers like NaN and Infinity.
96 lines
3.0 KiB
JavaScript
96 lines
3.0 KiB
JavaScript
'use strict';
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const {readdirSync, statSync} = require('fs');
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const {join} = require('path');
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const baseConfig = require('./config.base');
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const NODE_MODULES_DIR =
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process.env.RELEASE_CHANNEL === 'stable' ? 'oss-stable' : 'oss-experimental';
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// Find all folders in packages/* with package.json
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const packagesRoot = join(__dirname, '..', '..', 'packages');
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const packages = readdirSync(packagesRoot).filter(dir => {
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if (dir.charAt(0) === '.') {
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return false;
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}
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if (dir.includes('react-devtools')) {
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return false;
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}
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const packagePath = join(packagesRoot, dir, 'package.json');
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let stat;
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try {
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stat = statSync(packagePath);
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} catch (err) {
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return false;
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}
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return stat.isFile();
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});
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// Create a module map to point React packages to the build output
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const moduleNameMapper = {};
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moduleNameMapper['react-devtools-feature-flags'] =
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'<rootDir>/packages/react-devtools-shared/src/config/DevToolsFeatureFlags.default';
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// Map packages to bundles
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packages.forEach(name => {
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// Root entry point
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moduleNameMapper[`^${name}$`] = `<rootDir>/build/${NODE_MODULES_DIR}/${name}`;
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// Named entry points
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moduleNameMapper[
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`^${name}\/([^\/]+)$`
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] = `<rootDir>/build/${NODE_MODULES_DIR}/${name}/$1`;
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});
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// Allow tests to import shared code (e.g. feature flags, getStackByFiberInDevAndProd)
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moduleNameMapper['^shared/([^/]+)$'] = '<rootDir>/packages/shared/$1';
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moduleNameMapper['^react-reconciler/([^/]+)$'] =
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'<rootDir>/packages/react-reconciler/$1';
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module.exports = Object.assign({}, baseConfig, {
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// Redirect imports to the compiled bundles
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moduleNameMapper,
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// Don't run bundle tests on -test.internal.* files
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testPathIgnorePatterns: ['/node_modules/', '-test.internal.js$'],
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// Exclude the build output from transforms
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transformIgnorePatterns: [
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'/node_modules/',
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'<rootDir>/build/',
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'/__compiled__/',
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'/__untransformed__/',
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],
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testRegex: 'packages/react-devtools-shared/.+/__tests__/[^]+.test.js$',
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snapshotSerializers: [
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/dehydratedValueSerializer.js'
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),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/hookSerializer.js'
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),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/inspectedElementSerializer.js'
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),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/storeSerializer.js'
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),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/treeContextStateSerializer.js'
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),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/__serializers__/numberToFixedSerializer.js'
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),
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],
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setupFiles: [
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...baseConfig.setupFiles,
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require.resolve('./setupTests.build.js'),
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/setupEnv.js'
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),
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],
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setupFilesAfterEnv: [
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require.resolve(
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'../../packages/react-devtools-shared/src/__tests__/setupTests.js'
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),
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],
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});
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