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const path = require('path')
const minimatch = require('minimatch')
function getTestFilter() {
const manifest = process.env.NEXT_EXTERNAL_TESTS_FILTERS
? require(path.resolve(process.env.NEXT_EXTERNAL_TESTS_FILTERS))
: null
if (!manifest) return null
console.log(
'Filtering tests using manifest:',
process.env.NEXT_EXTERNAL_TESTS_FILTERS
)
// For the legacy manifest without a version, we assume it's a complete list
// of all the tests.
if (!manifest.version || typeof manifest.version !== 'number') {
return (tests) =>
tests
.filter((test) => {
const info = manifest[test.file]
// Include tests that are not in the manifest
return !info || !info.runtimeError
})
.map((test) => {
const info = manifest[test.file]
// Exclude failing and flakey tests, newly added tests are automatically included
if (info && (info.failed.length > 0 || info.flakey.length > 0)) {
test.excludedCases = info.failed.concat(info.flakey)
}
return test
})
}
// The new manifest version 2 only contains the list of tests that should
// be run, with exclusions added based on rules. Any new tests that are added
// will be automatically included if they match the include rules.
if (manifest.version === 2) {
return (tests) =>
tests
.filter((test) => {
// Check to see if this was included as-is in the manifest.
if (test.file in manifest.suites) return true
// If this file doesn't match any of the include patterns, then it
// should be excluded.
if (
manifest.rules.include.every(
(pattern) => !minimatch(test.file, pattern)
)
) {
return false
}
// If the file matches any of the exclude patterns, then it should be
// excluded.
if (
manifest.rules.exclude?.some((pattern) =>
minimatch(test.file, pattern)
)
) {
return false
}
// Otherwise, it should be included.
return true
})
.map((test) => {
const info = manifest.suites[test.file]
// If there's no info for this test, then it's a test that has no
// failures or flakey tests, so we can just include it as-is.
if (!info) {
return test
}
// Exclude failing and flakey tests, newly added tests are
// automatically included.
const { failed = [], flakey = [] } = info
if (failed.length > 0 || flakey.length > 0) {
test.excludedCases = failed.concat(flakey)
}
return test
})
}
throw new Error(`Unknown manifest version: ${manifest.version}`)
}
module.exports = { getTestFilter }
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