86 lines
2.6 KiB
TypeScript
86 lines
2.6 KiB
TypeScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import type {AggregatedResult} from '@jest/test-result';
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import type {Test} from '@jest/test-result';
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import type {TestContext} from '@jest/test-result';
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declare type Cache_2 = {
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[key: string]: [0 | 1, number] | undefined;
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};
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export declare type ShardOptions = {
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shardIndex: number;
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shardCount: number;
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};
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/**
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* The TestSequencer will ultimately decide which tests should run first.
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* It is responsible for storing and reading from a local cache
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* map that stores context information for a given test, such as how long it
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* took to run during the last run and if it has failed or not.
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* Such information is used on:
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* TestSequencer.sort(tests: Array<Test>)
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* to sort the order of the provided tests.
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*
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* After the results are collected,
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* TestSequencer.cacheResults(tests: Array<Test>, results: AggregatedResult)
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* is called to store/update this information on the cache map.
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*/
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declare class TestSequencer {
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private readonly _cache;
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_getCachePath(testContext: TestContext): string;
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_getCache(test: Test): Cache_2;
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private _shardPosition;
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/**
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* Select tests for shard requested via --shard=shardIndex/shardCount
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* Sharding is applied before sorting
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*
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* @param tests All tests
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* @param options shardIndex and shardIndex to select
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*
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* @example
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* ```typescript
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* class CustomSequencer extends Sequencer {
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* shard(tests, { shardIndex, shardCount }) {
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* const shardSize = Math.ceil(tests.length / options.shardCount);
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* const shardStart = shardSize * (options.shardIndex - 1);
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* const shardEnd = shardSize * options.shardIndex;
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* return [...tests]
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* .sort((a, b) => (a.path > b.path ? 1 : -1))
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* .slice(shardStart, shardEnd);
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* }
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* }
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* ```
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*/
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shard(
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tests: Array<Test>,
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options: ShardOptions,
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): Array<Test> | Promise<Array<Test>>;
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/**
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* Sort test to determine order of execution
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* Sorting is applied after sharding
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* @param tests
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*
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* ```typescript
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* class CustomSequencer extends Sequencer {
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* sort(tests) {
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* const copyTests = Array.from(tests);
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* return [...tests].sort((a, b) => (a.path > b.path ? 1 : -1));
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* }
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* }
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* ```
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*/
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sort(tests: Array<Test>): Array<Test> | Promise<Array<Test>>;
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allFailedTests(tests: Array<Test>): Array<Test> | Promise<Array<Test>>;
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cacheResults(tests: Array<Test>, results: AggregatedResult): void;
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private hasFailed;
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private time;
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}
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export default TestSequencer;
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export {};
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