381 lines
10 KiB
TypeScript
381 lines
10 KiB
TypeScript
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/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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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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export declare type ClassLike = {
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new (...args: any): any;
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};
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export declare type ConstructorLikeKeys<T> = keyof {
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[K in keyof T as Required<T>[K] extends ClassLike ? K : never]: T[K];
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};
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export declare const fn: <T extends FunctionLike = UnknownFunction>(
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implementation?: T | undefined,
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) => Mock<T>;
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export declare type FunctionLike = (...args: any) => any;
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export declare type MethodLikeKeys<T> = keyof {
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[K in keyof T as Required<T>[K] extends FunctionLike ? K : never]: T[K];
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};
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/**
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* All what the internal typings need is to be sure that we have any-function.
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* `FunctionLike` type ensures that and helps to constrain the type as well.
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* The default of `UnknownFunction` makes sure that `any`s do not leak to the
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* user side. For instance, calling `fn()` without implementation will return
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* a mock of `(...args: Array<unknown>) => unknown` type. If implementation
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* is provided, its typings are inferred correctly.
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*/
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export declare interface Mock<T extends FunctionLike = UnknownFunction>
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extends Function,
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MockInstance<T> {
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new (...args: Parameters<T>): ReturnType<T>;
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(...args: Parameters<T>): ReturnType<T>;
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}
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export declare type Mocked<T> = T extends ClassLike
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? MockedClass<T>
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: T extends FunctionLike
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? MockedFunction<T>
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: T extends object
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? MockedObject<T>
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: T;
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export declare const mocked: {
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<T extends object>(
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source: T,
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options?: {
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shallow: false;
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},
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): Mocked<T>;
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<T_1 extends object>(
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source: T_1,
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options: {
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shallow: true;
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},
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): MockedShallow<T_1>;
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};
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export declare type MockedClass<T extends ClassLike> = MockInstance<
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(...args: ConstructorParameters<T>) => Mocked<InstanceType<T>>
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> &
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MockedObject<T>;
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export declare type MockedFunction<T extends FunctionLike> = MockInstance<T> &
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MockedObject<T>;
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declare type MockedFunctionShallow<T extends FunctionLike> = MockInstance<T> &
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T;
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export declare type MockedObject<T extends object> = {
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[K in keyof T]: T[K] extends ClassLike
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? MockedClass<T[K]>
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: T[K] extends FunctionLike
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? MockedFunction<T[K]>
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: T[K] extends object
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? MockedObject<T[K]>
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: T[K];
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} & T;
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declare type MockedObjectShallow<T extends object> = {
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[K in keyof T]: T[K] extends ClassLike
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? MockedClass<T[K]>
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: T[K] extends FunctionLike
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? MockedFunctionShallow<T[K]>
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: T[K];
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} & T;
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export declare type MockedShallow<T> = T extends ClassLike
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? MockedClass<T>
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: T extends FunctionLike
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? MockedFunctionShallow<T>
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: T extends object
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? MockedObjectShallow<T>
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: T;
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export declare type MockFunctionMetadata<
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T = unknown,
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MetadataType = MockMetadataType,
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> = MockMetadata<T, MetadataType>;
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export declare type MockFunctionMetadataType = MockMetadataType;
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declare type MockFunctionResult<T extends FunctionLike = UnknownFunction> =
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| MockFunctionResultIncomplete
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| MockFunctionResultReturn<T>
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| MockFunctionResultThrow;
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declare type MockFunctionResultIncomplete = {
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type: 'incomplete';
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/**
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* Result of a single call to a mock function that has not yet completed.
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* This occurs if you test the result from within the mock function itself,
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* or from within a function that was called by the mock.
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*/
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value: undefined;
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};
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declare type MockFunctionResultReturn<
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T extends FunctionLike = UnknownFunction,
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> = {
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type: 'return';
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/**
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* Result of a single call to a mock function that returned.
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*/
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value: ReturnType<T>;
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};
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declare type MockFunctionResultThrow = {
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type: 'throw';
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/**
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* Result of a single call to a mock function that threw.
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*/
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value: unknown;
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};
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declare type MockFunctionState<T extends FunctionLike = UnknownFunction> = {
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/**
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* List of the call arguments of all calls that have been made to the mock.
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*/
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calls: Array<Parameters<T>>;
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/**
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* List of all the object instances that have been instantiated from the mock.
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*/
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instances: Array<ReturnType<T>>;
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/**
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* List of all the function contexts that have been applied to calls to the mock.
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*/
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contexts: Array<ThisParameterType<T>>;
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/**
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* List of the call order indexes of the mock. Jest is indexing the order of
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* invocations of all mocks in a test file. The index is starting with `1`.
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*/
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invocationCallOrder: Array<number>;
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/**
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* List of the call arguments of the last call that was made to the mock.
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* If the function was not called, it will return `undefined`.
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*/
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lastCall?: Parameters<T>;
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/**
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* List of the results of all calls that have been made to the mock.
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*/
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results: Array<MockFunctionResult<T>>;
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};
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export declare interface MockInstance<
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T extends FunctionLike = UnknownFunction,
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> {
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_isMockFunction: true;
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_protoImpl: Function;
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getMockImplementation(): T | undefined;
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getMockName(): string;
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mock: MockFunctionState<T>;
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mockClear(): this;
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mockReset(): this;
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mockRestore(): void;
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mockImplementation(fn: T): this;
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mockImplementationOnce(fn: T): this;
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withImplementation(fn: T, callback: () => Promise<unknown>): Promise<void>;
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withImplementation(fn: T, callback: () => void): void;
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mockName(name: string): this;
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mockReturnThis(): this;
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mockReturnValue(value: ReturnType<T>): this;
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mockReturnValueOnce(value: ReturnType<T>): this;
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mockResolvedValue(value: ResolveType<T>): this;
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mockResolvedValueOnce(value: ResolveType<T>): this;
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mockRejectedValue(value: RejectType<T>): this;
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mockRejectedValueOnce(value: RejectType<T>): this;
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}
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export declare type MockMetadata<T, MetadataType = MockMetadataType> = {
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ref?: number;
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members?: Record<string, MockMetadata<T>>;
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mockImpl?: T;
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name?: string;
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refID?: number;
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type?: MetadataType;
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value?: T;
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length?: number;
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};
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export declare type MockMetadataType =
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| 'object'
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| 'array'
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| 'regexp'
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| 'function'
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| 'constant'
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| 'collection'
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| 'null'
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| 'undefined';
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export declare class ModuleMocker {
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private readonly _environmentGlobal;
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private _mockState;
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private _mockConfigRegistry;
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private _spyState;
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private _invocationCallCounter;
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/**
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* @see README.md
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* @param global Global object of the test environment, used to create
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* mocks
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*/
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constructor(global: typeof globalThis);
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private _getSlots;
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private _ensureMockConfig;
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private _ensureMockState;
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private _defaultMockConfig;
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private _defaultMockState;
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private _makeComponent;
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private _createMockFunction;
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private _generateMock;
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/**
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* @see README.md
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* @param metadata Metadata for the mock in the schema returned by the
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* getMetadata method of this module.
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*/
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generateFromMetadata<T>(metadata: MockMetadata<T>): Mocked<T>;
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/**
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* @see README.md
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* @param component The component for which to retrieve metadata.
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*/
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getMetadata<T = unknown>(
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component: T,
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_refs?: Map<T, number>,
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): MockMetadata<T> | null;
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isMockFunction<T extends FunctionLike = UnknownFunction>(
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fn: MockInstance<T>,
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): fn is MockInstance<T>;
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isMockFunction<P extends Array<unknown>, R>(
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fn: (...args: P) => R,
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): fn is Mock<(...args: P) => R>;
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isMockFunction(fn: unknown): fn is Mock<UnknownFunction>;
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fn<T extends FunctionLike = UnknownFunction>(implementation?: T): Mock<T>;
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spyOn<
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T extends object,
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K extends PropertyLikeKeys<T>,
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V extends Required<T>[K],
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A extends 'get' | 'set',
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>(
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object: T,
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methodKey: K,
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accessType: A,
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): A extends 'get'
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? SpiedGetter<V>
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: A extends 'set'
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? SpiedSetter<V>
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: never;
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spyOn<
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T extends object,
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K extends ConstructorLikeKeys<T> | MethodLikeKeys<T>,
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V extends Required<T>[K],
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>(
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object: T,
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methodKey: K,
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): V extends ClassLike | FunctionLike ? Spied<V> : never;
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private _spyOnProperty;
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clearAllMocks(): void;
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resetAllMocks(): void;
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restoreAllMocks(): void;
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private _typeOf;
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mocked<T extends object>(
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source: T,
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options?: {
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shallow: false;
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},
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): Mocked<T>;
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mocked<T extends object>(
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source: T,
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options: {
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shallow: true;
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},
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): MockedShallow<T>;
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}
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export declare type PropertyLikeKeys<T> = Exclude<
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keyof T,
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ConstructorLikeKeys<T> | MethodLikeKeys<T>
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>;
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declare type RejectType<T extends FunctionLike> =
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ReturnType<T> extends PromiseLike<any> ? unknown : never;
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declare type ResolveType<T extends FunctionLike> =
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ReturnType<T> extends PromiseLike<infer U> ? U : never;
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export declare type Spied<T extends ClassLike | FunctionLike> =
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T extends ClassLike
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? MockInstance<(...args: ConstructorParameters<T>) => InstanceType<T>>
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: T extends FunctionLike
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? MockInstance<(...args: Parameters<T>) => ReturnType<T>>
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: never;
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export declare type SpiedClass<T extends ClassLike = UnknownClass> =
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MockInstance<(...args: ConstructorParameters<T>) => InstanceType<T>>;
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export declare type SpiedFunction<T extends FunctionLike = UnknownFunction> =
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MockInstance<(...args: Parameters<T>) => ReturnType<T>>;
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export declare type SpiedGetter<T> = MockInstance<() => T>;
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export declare type SpiedSetter<T> = MockInstance<(arg: T) => void>;
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export declare interface SpyInstance<T extends FunctionLike = UnknownFunction>
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extends MockInstance<T> {}
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export declare const spyOn: {
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<
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T extends object,
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K_2 extends Exclude<
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keyof T,
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| keyof {
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[K in keyof T as Required<T>[K] extends ClassLike ? K : never]: T[K];
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}
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| keyof {
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[K_1 in keyof T as Required<T>[K_1] extends FunctionLike
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? K_1
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: never]: T[K_1];
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}
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>,
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V extends Required<T>[K_2],
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A extends 'set' | 'get',
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>(
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object: T,
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methodKey: K_2,
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accessType: A,
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): A extends 'get'
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? SpiedGetter<V>
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: A extends 'set'
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? SpiedSetter<V>
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: never;
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<
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T_1 extends object,
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K_5 extends
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| keyof {
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[K_3 in keyof T_1 as Required<T_1>[K_3] extends ClassLike
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? K_3
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: never]: T_1[K_3];
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}
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| keyof {
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[K_4 in keyof T_1 as Required<T_1>[K_4] extends FunctionLike
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? K_4
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: never]: T_1[K_4];
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},
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V_1 extends Required<T_1>[K_5],
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>(
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object: T_1,
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methodKey: K_5,
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): V_1 extends ClassLike | FunctionLike ? Spied<V_1> : never;
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};
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export declare type UnknownClass = {
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new (...args: Array<unknown>): unknown;
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};
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export declare type UnknownFunction = (...args: Array<unknown>) => unknown;
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export {};
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