123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387 |
- import { EqualsFunction, Tester, Tester as Tester$1, TesterContext } from "@jest/expect-utils";
- import * as jestMatcherUtils from "jest-matcher-utils";
- import { MockInstance } from "jest-mock";
- //#region src/types.d.ts
- type SyncExpectationResult = {
- pass: boolean;
- message(): string;
- };
- type AsyncExpectationResult = Promise<SyncExpectationResult>;
- type ExpectationResult = SyncExpectationResult | AsyncExpectationResult;
- type MatcherFunctionWithContext<Context extends MatcherContext = MatcherContext, Expected extends Array<any> = [] /** TODO should be: extends Array<unknown> = [] */> = (this: Context, actual: unknown, ...expected: Expected) => ExpectationResult;
- type MatcherFunction<Expected extends Array<unknown> = []> = MatcherFunctionWithContext<MatcherContext, Expected>;
- type RawMatcherFn<Context extends MatcherContext = MatcherContext> = {
- (this: Context, actual: any, ...expected: Array<any>): ExpectationResult;
- };
- type MatchersObject = {
- [name: string]: RawMatcherFn;
- };
- interface MatcherUtils {
- customTesters: Array<Tester$1>;
- dontThrow(): void;
- equals: EqualsFunction;
- utils: typeof jestMatcherUtils & {
- iterableEquality: Tester$1;
- subsetEquality: Tester$1;
- };
- }
- interface MatcherState {
- assertionCalls: number;
- currentConcurrentTestName?: () => string | undefined;
- currentTestName?: string;
- error?: Error;
- expand?: boolean;
- expectedAssertionsNumber: number | null;
- expectedAssertionsNumberError?: Error;
- isExpectingAssertions: boolean;
- isExpectingAssertionsError?: Error;
- isNot?: boolean;
- numPassingAsserts: number;
- promise?: string;
- suppressedErrors: Array<Error>;
- testPath?: string;
- }
- type MatcherContext = MatcherUtils & Readonly<MatcherState>;
- type AsymmetricMatcher$1 = {
- asymmetricMatch(other: unknown): boolean;
- toString(): string;
- getExpectedType?(): string;
- toAsymmetricMatcher?(): string;
- };
- type ExpectedAssertionsErrors = Array<{
- actual: string | number;
- error: Error;
- expected: string;
- }>;
- interface BaseExpect {
- assertions(numberOfAssertions: number): void;
- addEqualityTesters(testers: Array<Tester$1>): void;
- extend(matchers: MatchersObject): void;
- extractExpectedAssertionsErrors(): ExpectedAssertionsErrors;
- getState(): MatcherState;
- hasAssertions(): void;
- setState(state: Partial<MatcherState>): void;
- }
- type Expect = (<T = unknown>(actual: T) => Matchers<void, T> & Inverse<Matchers<void, T>> & PromiseMatchers<T>) & BaseExpect & AsymmetricMatchers & Inverse<Omit<AsymmetricMatchers, 'any' | 'anything'>>;
- type Inverse<Matchers> = {
- /**
- * Inverse next matcher. If you know how to test something, `.not` lets you test its opposite.
- */
- not: Matchers;
- };
- interface AsymmetricMatchers {
- any(sample: unknown): AsymmetricMatcher$1;
- anything(): AsymmetricMatcher$1;
- arrayContaining(sample: Array<unknown>): AsymmetricMatcher$1;
- arrayOf(sample: unknown): AsymmetricMatcher$1;
- closeTo(sample: number, precision?: number): AsymmetricMatcher$1;
- objectContaining(sample: Record<string, unknown>): AsymmetricMatcher$1;
- stringContaining(sample: string): AsymmetricMatcher$1;
- stringMatching(sample: string | RegExp): AsymmetricMatcher$1;
- }
- type PromiseMatchers<T = unknown> = {
- /**
- * Unwraps the reason of a rejected promise so any other matcher can be chained.
- * If the promise is fulfilled the assertion fails.
- */
- rejects: Matchers<Promise<void>, T> & Inverse<Matchers<Promise<void>, T>>;
- /**
- * Unwraps the value of a fulfilled promise so any other matcher can be chained.
- * If the promise is rejected the assertion fails.
- */
- resolves: Matchers<Promise<void>, T> & Inverse<Matchers<Promise<void>, T>>;
- };
- interface Matchers<R extends void | Promise<void>, T = unknown> {
- /**
- * Checks that a value is what you expect. It calls `Object.is` to compare values.
- * Don't use `toBe` with floating-point numbers.
- */
- toBe(expected: unknown): R;
- /**
- * Using exact equality with floating point numbers is a bad idea.
- * Rounding means that intuitive things fail.
- * The default for `precision` is 2.
- */
- toBeCloseTo(expected: number, precision?: number): R;
- /**
- * Ensure that a variable is not undefined.
- */
- toBeDefined(): R;
- /**
- * When you don't care what a value is, you just want to
- * ensure a value is false in a boolean context.
- */
- toBeFalsy(): R;
- /**
- * For comparing floating point numbers.
- */
- toBeGreaterThan(expected: number | bigint): R;
- /**
- * For comparing floating point numbers.
- */
- toBeGreaterThanOrEqual(expected: number | bigint): R;
- /**
- * Ensure that an object is an instance of a class.
- * This matcher uses `instanceof` underneath.
- */
- toBeInstanceOf(expected: unknown): R;
- /**
- * For comparing floating point numbers.
- */
- toBeLessThan(expected: number | bigint): R;
- /**
- * For comparing floating point numbers.
- */
- toBeLessThanOrEqual(expected: number | bigint): R;
- /**
- * Used to check that a variable is NaN.
- */
- toBeNaN(): R;
- /**
- * This is the same as `.toBe(null)` but the error messages are a bit nicer.
- * So use `.toBeNull()` when you want to check that something is null.
- */
- toBeNull(): R;
- /**
- * Use when you don't care what a value is, you just want to ensure a value
- * is true in a boolean context. In JavaScript, there are six falsy values:
- * `false`, `0`, `''`, `null`, `undefined`, and `NaN`. Everything else is truthy.
- */
- toBeTruthy(): R;
- /**
- * Used to check that a variable is undefined.
- */
- toBeUndefined(): R;
- /**
- * Used when you want to check that an item is in a list.
- * For testing the items in the list, this uses `===`, a strict equality check.
- */
- toContain(expected: unknown): R;
- /**
- * Used when you want to check that an item is in a list.
- * For testing the items in the list, this matcher recursively checks the
- * equality of all fields, rather than checking for object identity.
- */
- toContainEqual(expected: unknown): R;
- /**
- * Used when you want to check that two objects have the same value.
- * This matcher recursively checks the equality of all fields, rather than checking for object identity.
- */
- toEqual(expected: unknown): R;
- /**
- * Ensures that a mock function is called.
- */
- toHaveBeenCalled(): R;
- /**
- * Ensures that a mock function is called an exact number of times.
- */
- toHaveBeenCalledTimes(expected: number): R;
- /**
- * Ensure that a mock function is called with specific arguments.
- */
- toHaveBeenCalledWith(...expected: MockParameters<T>): R;
- /**
- * Ensure that a mock function is called with specific arguments on an Nth call.
- */
- toHaveBeenNthCalledWith(nth: number, ...expected: MockParameters<T>): R;
- /**
- * If you have a mock function, you can use `.toHaveBeenLastCalledWith`
- * to test what arguments it was last called with.
- */
- toHaveBeenLastCalledWith(...expected: MockParameters<T>): R;
- /**
- * Use to test the specific value that a mock function last returned.
- * If the last call to the mock function threw an error, then this matcher will fail
- * no matter what value you provided as the expected return value.
- */
- toHaveLastReturnedWith(expected?: unknown): R;
- /**
- * Used to check that an object has a `.length` property
- * and it is set to a certain numeric value.
- */
- toHaveLength(expected: number): R;
- /**
- * Use to test the specific value that a mock function returned for the nth call.
- * If the nth call to the mock function threw an error, then this matcher will fail
- * no matter what value you provided as the expected return value.
- */
- toHaveNthReturnedWith(nth: number, expected?: unknown): R;
- /**
- * Use to check if property at provided reference keyPath exists for an object.
- * For checking deeply nested properties in an object you may use dot notation or an array containing
- * the keyPath for deep references.
- *
- * Optionally, you can provide a value to check if it's equal to the value present at keyPath
- * on the target object. This matcher uses 'deep equality' (like `toEqual()`) and recursively checks
- * the equality of all fields.
- *
- * @example
- *
- * expect(houseForSale).toHaveProperty('kitchen.area', 20);
- */
- toHaveProperty(expectedPath: string | Array<string>, expectedValue?: unknown): R;
- /**
- * Use to test that the mock function successfully returned (i.e., did not throw an error) at least one time
- */
- toHaveReturned(): R;
- /**
- * Use to ensure that a mock function returned successfully (i.e., did not throw an error) an exact number of times.
- * Any calls to the mock function that throw an error are not counted toward the number of times the function returned.
- */
- toHaveReturnedTimes(expected: number): R;
- /**
- * Use to ensure that a mock function returned a specific value.
- */
- toHaveReturnedWith(expected?: unknown): R;
- /**
- * Check that a string matches a regular expression.
- */
- toMatch(expected: string | RegExp): R;
- /**
- * Used to check that a JavaScript object matches a subset of the properties of an object
- */
- toMatchObject(expected: Record<string, unknown> | Array<Record<string, unknown>>): R;
- /**
- * Use to test that objects have the same types as well as structure.
- */
- toStrictEqual(expected: unknown): R;
- /**
- * Used to test that a function throws when it is called.
- */
- toThrow(expected?: unknown): R;
- }
- /**
- * Obtains the parameters of the given function or {@link MockInstance}'s function type.
- * ```ts
- * type P = MockParameters<MockInstance<(foo: number) => void>>;
- * // or without an explicit mock
- * // type P = MockParameters<(foo: number) => void>;
- *
- * const params1: P = [1]; // compiles
- * const params2: P = ['bar']; // error
- * const params3: P = []; // error
- * ```
- *
- * This is similar to {@link Parameters}, with these notable differences:
- *
- * 1. Each of the parameters can also accept an {@link AsymmetricMatcher}.
- * ```ts
- * const params4: P = [expect.anything()]; // compiles
- * ```
- * This works with nested types as well:
- * ```ts
- * type Nested = MockParameters<MockInstance<(foo: { a: number }, bar: [string]) => void>>;
- *
- * const params1: Nested = [{ foo: { a: 1 }}, ['value']]; // compiles
- * const params2: Nested = [expect.anything(), expect.anything()]; // compiles
- * const params3: Nested = [{ foo: { a: expect.anything() }}, [expect.anything()]]; // compiles
- * ```
- *
- * 2. This type works with overloaded functions (up to 15 overloads):
- * ```ts
- * function overloaded(): void;
- * function overloaded(foo: number): void;
- * function overloaded(foo: number, bar: string): void;
- * function overloaded(foo?: number, bar?: string): void {}
- *
- * type Overloaded = MockParameters<MockInstance<typeof overloaded>>;
- *
- * const params1: Overloaded = []; // compiles
- * const params2: Overloaded = [1]; // compiles
- * const params3: Overloaded = [1, 'value']; // compiles
- * const params4: Overloaded = ['value']; // error
- * const params5: Overloaded = ['value', 1]; // error
- * ```
- *
- * Mocks generated with the default `MockInstance` type will evaluate to `Array<unknown>`:
- * ```ts
- * MockParameters<MockInstance> // Array<unknown>
- * ```
- *
- * If the given type is not a `MockInstance` nor a function, this type will evaluate to `Array<unknown>`:
- * ```ts
- * MockParameters<boolean> // Array<unknown>
- * ```
- */
- type MockParameters<M> = M extends MockInstance<infer F> ? FunctionParameters<F> : FunctionParameters<M>;
- /**
- * A wrapper over `FunctionParametersInternal` which converts `never` evaluations to `Array<unknown>`.
- *
- * This is only necessary for Typescript versions prior to 5.3.
- *
- * In those versions, a function without parameters (`() => any`) is interpreted the same as an overloaded function,
- * causing `FunctionParametersInternal` to evaluate it to `[] | Array<unknown>`, which is incorrect.
- *
- * The workaround is to "catch" this edge-case in `WithAsymmetricMatchers` and interpret it as `never`.
- * However, this also affects {@link UnknownFunction} (the default generic type of `MockInstance`):
- * ```ts
- * FunctionParametersInternal<() => any> // [] | never --> [] --> correct
- * FunctionParametersInternal<UnknownFunction> // never --> incorrect
- * ```
- * An empty array is the expected type for a function without parameters,
- * so all that's left is converting `never` to `Array<unknown>` for the case of `UnknownFunction`,
- * as it needs to accept _any_ combination of parameters.
- */
- type FunctionParameters<F> = FunctionParametersInternal<F> extends never ? Array<unknown> : FunctionParametersInternal<F>;
- /**
- * 1. If the function is overloaded or has no parameters -> overloaded form (union of tuples).
- * 2. If the function has parameters -> simple form.
- * 3. else -> `never`.
- */
- type FunctionParametersInternal<F> = F extends {
- (...args: infer P1): any;
- (...args: infer P2): any;
- (...args: infer P3): any;
- (...args: infer P4): any;
- (...args: infer P5): any;
- (...args: infer P6): any;
- (...args: infer P7): any;
- (...args: infer P8): any;
- (...args: infer P9): any;
- (...args: infer P10): any;
- (...args: infer P11): any;
- (...args: infer P12): any;
- (...args: infer P13): any;
- (...args: infer P14): any;
- (...args: infer P15): any;
- } ? WithAsymmetricMatchers<P1> | WithAsymmetricMatchers<P2> | WithAsymmetricMatchers<P3> | WithAsymmetricMatchers<P4> | WithAsymmetricMatchers<P5> | WithAsymmetricMatchers<P6> | WithAsymmetricMatchers<P7> | WithAsymmetricMatchers<P8> | WithAsymmetricMatchers<P9> | WithAsymmetricMatchers<P10> | WithAsymmetricMatchers<P11> | WithAsymmetricMatchers<P12> | WithAsymmetricMatchers<P13> | WithAsymmetricMatchers<P14> | WithAsymmetricMatchers<P15> : F extends ((...args: infer P) => any) ? WithAsymmetricMatchers<P> : never;
- /**
- * @see FunctionParameters
- */
- type WithAsymmetricMatchers<P extends Array<any>> = Array<unknown> extends P ? never : { [K in keyof P]: DeepAsymmetricMatcher<P[K]> };
- /**
- * Replaces `T` with `T | AsymmetricMatcher`.
- *
- * If `T` is an object or an array, recursively replaces all nested types with the same logic:
- * ```ts
- * type DeepAsymmetricMatcher<boolean>; // AsymmetricMatcher | boolean
- * type DeepAsymmetricMatcher<{ foo: number }>; // AsymmetricMatcher | { foo: AsymmetricMatcher | number }
- * type DeepAsymmetricMatcher<[string]>; // AsymmetricMatcher | [AsymmetricMatcher | string]
- * ```
- */
- type DeepAsymmetricMatcher<T> = T extends object ? AsymmetricMatcher$1 | { [K in keyof T]: DeepAsymmetricMatcher<T[K]> } : AsymmetricMatcher$1 | T;
- //#endregion
- //#region src/asymmetricMatchers.d.ts
- declare abstract class AsymmetricMatcher<T> implements AsymmetricMatcher$1 {
- protected sample: T;
- protected inverse: boolean;
- $$typeof: symbol;
- constructor(sample: T, inverse?: boolean);
- protected getMatcherContext(): MatcherContext;
- abstract asymmetricMatch(other: unknown): boolean;
- abstract toString(): string;
- getExpectedType?(): string;
- toAsymmetricMatcher?(): string;
- }
- //#endregion
- //#region src/index.d.ts
- declare class JestAssertionError extends Error {
- matcherResult?: Omit<SyncExpectationResult, 'message'> & {
- message: string;
- };
- }
- declare const expect: Expect;
- //#endregion
- export { AsymmetricMatcher, AsymmetricMatchers, AsyncExpectationResult, BaseExpect, Expect, ExpectationResult, JestAssertionError, MatcherContext, MatcherFunction, MatcherFunctionWithContext, MatcherState, MatcherUtils, Matchers, SyncExpectationResult, Tester, TesterContext, expect as default, expect };
|