When you want to place your component test files right next to the component's but you don't want your directories littered with __snapshots__/ dirs:
// __snapshots__/snapshotResolver.js
module.exports = {
resolveSnapshotPath: (testPath, snapshotExtension) =>
testPath
.replace(
/\.test\.([tj]sx?)/,
`.test${snapshotExtension}`
)
.replace(
/src([/\\]components)/,
'__snapshots__'
),
resolveTestPath: (snapshotFilePath, snapshotExtension) =>
snapshotFilePath
.replace(snapshotExtension, '.js')
.replace('__snapshots__', 'src/components'),
testPathForConsistencyCheck: 'src/components/some.test.js',
}
// jest.config.js
module.exports = {
preset: 'react-native', // optional depending on your project
snapshotResolver: './__snapshots__/snapshotResolver.js',
testMatch: [
'**/__tests__/**/?(*.)+(spec|test).(js|ts|tsx)',
'**/?(*.)+(spec|test).(js|ts|tsx)'
],
}
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