mirror of
https://github.com/denoland/std.git
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829 lines
21 KiB
TypeScript
829 lines
21 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { assertNotStrictEquals } from "@std/assert/not-strict-equals";
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import { assertStrictEquals } from "@std/assert/strict-equals";
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import { assertInstanceOf } from "@std/assert/instance-of";
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import { assertIsError } from "@std/assert/is-error";
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import { assertNotInstanceOf } from "@std/assert/not-instance-of";
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import { assertMatch } from "@std/assert/match";
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import { assertObjectMatch } from "@std/assert/object-match";
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import { assertNotMatch } from "@std/assert/not-match";
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import { AssertionError } from "@std/assert/assertion-error";
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import { assertEquals } from "./_assert_equals.ts";
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import { assertNotEquals } from "./_assert_not_equals.ts";
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import { equal } from "./_equal.ts";
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import { format } from "@std/internal/format";
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import type { AnyConstructor, MatcherContext, MatchResult } from "./_types.ts";
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import { getMockCalls } from "./_mock_util.ts";
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import { inspectArg, inspectArgs } from "./_inspect_args.ts";
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import { buildEqualOptions, iterableEquality } from "./_utils.ts";
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export function toBe(context: MatcherContext, expect: unknown): MatchResult {
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if (context.isNot) {
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assertNotStrictEquals(context.value, expect, context.customMessage);
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} else {
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assertStrictEquals(context.value, expect, context.customMessage);
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}
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}
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export function toEqual(
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context: MatcherContext,
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expected: unknown,
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): MatchResult {
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const v = context.value;
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const e = expected;
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const equalsOptions = buildEqualOptions({
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...context,
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customTesters: [
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...context.customTesters,
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iterableEquality,
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],
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});
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if (context.isNot) {
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assertNotEquals(v, e, equalsOptions);
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} else {
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assertEquals(v, e, equalsOptions);
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}
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}
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export function toStrictEqual(
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context: MatcherContext,
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expected: unknown,
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): MatchResult {
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const equalsOptions = buildEqualOptions({
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...context,
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strictCheck: true,
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customTesters: [
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...context.customTesters,
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iterableEquality,
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],
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});
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if (context.isNot) {
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assertNotEquals(context.value, expected, equalsOptions);
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} else {
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assertEquals(context.value, expected, equalsOptions);
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}
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}
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export function toBeCloseTo(
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context: MatcherContext,
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expected: number,
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numDigits = 2,
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): MatchResult {
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if (numDigits < 0) {
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throw new Error(
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"toBeCloseTo second argument must be a non-negative integer. Got " +
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numDigits,
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);
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}
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const tolerance = 0.5 * Math.pow(10, -numDigits);
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const value = Number(context.value);
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const pass = Math.abs(expected - value) < tolerance;
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if (context.isNot) {
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if (pass) {
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throw new AssertionError(
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`Expected the value not to be close to ${expected} (using ${numDigits} digits), but it is`,
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);
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}
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} else {
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if (!pass) {
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throw new AssertionError(
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`Expected the value (${value} to be close to ${expected} (using ${numDigits} digits), but it is not`,
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);
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}
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}
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}
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export function toBeDefined(context: MatcherContext): MatchResult {
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if (context.isNot) {
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assertStrictEquals(context.value, undefined, context.customMessage);
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} else {
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assertNotStrictEquals(context.value, undefined, context.customMessage);
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}
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}
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export function toBeUndefined(context: MatcherContext): MatchResult {
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if (context.isNot) {
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assertNotStrictEquals(
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context.value,
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undefined,
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context.customMessage,
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);
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} else {
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assertStrictEquals(context.value, undefined, context.customMessage);
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}
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}
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export function toBeFalsy(
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context: MatcherContext,
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): MatchResult {
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const isFalsy = !(context.value);
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if (context.isNot) {
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if (isFalsy) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be falsy`,
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);
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}
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} else {
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if (!isFalsy) {
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throw new AssertionError(
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`Expected ${context.value} to be falsy`,
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);
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}
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}
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}
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export function toBeTruthy(
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context: MatcherContext,
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): MatchResult {
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const isTruthy = !!(context.value);
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if (context.isNot) {
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if (isTruthy) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be truthy`,
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);
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}
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} else {
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if (!isTruthy) {
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throw new AssertionError(
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`Expected ${context.value} to be truthy`,
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);
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}
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}
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}
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export function toBeGreaterThanOrEqual(
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context: MatcherContext,
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expected: number,
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): MatchResult {
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const isGreaterOrEqual = Number(context.value) >= Number(expected);
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if (context.isNot) {
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if (isGreaterOrEqual) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be greater than or equal ${expected}`,
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);
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}
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} else {
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if (!isGreaterOrEqual) {
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throw new AssertionError(
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`Expected ${context.value} to be greater than or equal ${expected}`,
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);
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}
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}
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}
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export function toBeGreaterThan(
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context: MatcherContext,
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expected: number,
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): MatchResult {
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const isGreater = Number(context.value) > Number(expected);
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if (context.isNot) {
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if (isGreater) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be greater than ${expected}`,
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);
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}
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} else {
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if (!isGreater) {
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throw new AssertionError(
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`Expected ${context.value} to be greater than ${expected}`,
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);
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}
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}
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}
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export function toBeInstanceOf<T extends AnyConstructor>(
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context: MatcherContext,
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expected: T,
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): MatchResult {
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if (context.isNot) {
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assertNotInstanceOf(context.value, expected);
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} else {
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assertInstanceOf(context.value, expected);
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}
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}
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export function toBeLessThanOrEqual(
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context: MatcherContext,
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expected: number,
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): MatchResult {
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const isLower = Number(context.value) <= Number(expected);
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if (context.isNot) {
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if (isLower) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be lower than or equal ${expected}`,
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);
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}
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} else {
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if (!isLower) {
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throw new AssertionError(
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`Expected ${context.value} to be lower than or equal ${expected}`,
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);
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}
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}
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}
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export function toBeLessThan(
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context: MatcherContext,
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expected: number,
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): MatchResult {
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const isLower = Number(context.value) < Number(expected);
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if (context.isNot) {
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if (isLower) {
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throw new AssertionError(
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`Expected ${context.value} to NOT be lower than ${expected}`,
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);
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}
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} else {
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if (!isLower) {
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throw new AssertionError(
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`Expected ${context.value} to be lower than ${expected}`,
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);
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}
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}
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}
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export function toBeNaN(context: MatcherContext): MatchResult {
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const equalsOptions = buildEqualOptions(context);
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if (context.isNot) {
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assertNotEquals(
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isNaN(Number(context.value)),
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true,
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{
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...equalsOptions,
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msg: equalsOptions.msg || `Expected ${context.value} to not be NaN`,
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},
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);
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} else {
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assertEquals(
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isNaN(Number(context.value)),
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true,
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{
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...equalsOptions,
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msg: equalsOptions.msg || `Expected ${context.value} to be NaN`,
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},
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);
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}
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}
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export function toBeNull(context: MatcherContext): MatchResult {
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if (context.isNot) {
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assertNotStrictEquals(
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context.value as number,
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null,
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context.customMessage || `Expected ${context.value} to not be null`,
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);
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} else {
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assertStrictEquals(
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context.value as number,
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null,
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context.customMessage || `Expected ${context.value} to be null`,
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);
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}
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}
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export function toHaveLength(
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context: MatcherContext,
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expected: number,
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): MatchResult {
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const { value } = context;
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// deno-lint-ignore no-explicit-any
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const maybeLength = (value as any)?.length;
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const hasLength = maybeLength === expected;
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if (context.isNot) {
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if (hasLength) {
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throw new AssertionError(
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`Expected value not to have length ${expected}, but it does`,
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);
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}
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} else {
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if (!hasLength) {
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throw new AssertionError(
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`Expected value to have length ${expected}, but it does not: the value has length ${maybeLength}`,
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);
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}
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}
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}
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export function toHaveProperty(
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context: MatcherContext,
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propName: string | string[],
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v?: unknown,
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): MatchResult {
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const { value } = context;
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let propPath = [] as string[];
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if (Array.isArray(propName)) {
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propPath = propName;
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} else {
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propPath = propName.split(".");
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}
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// deno-lint-ignore no-explicit-any
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let current = value as any;
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while (true) {
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if (current === undefined || current === null) {
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break;
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}
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if (propPath.length === 0) {
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break;
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}
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const prop = propPath.shift()!;
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current = current[prop];
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}
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let hasProperty;
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if (v) {
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hasProperty = current !== undefined && propPath.length === 0 &&
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equal(current, v, context);
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} else {
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hasProperty = current !== undefined && propPath.length === 0;
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}
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let ofValue = "";
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if (v) {
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ofValue = ` of the value ${inspectArg(v)}`;
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}
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if (context.isNot) {
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if (hasProperty) {
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throw new AssertionError(
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`Expected the value not to have the property ${
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propPath.join(".")
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}${ofValue}, but it does`,
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);
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}
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} else {
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if (!hasProperty) {
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throw new AssertionError(
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`Expected the value to have the property ${
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propPath.join(".")
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}${ofValue}, but it does not`,
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);
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}
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}
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}
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export function toContain(
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context: MatcherContext,
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expected: unknown,
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): MatchResult {
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// deno-lint-ignore no-explicit-any
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const doesContain = (context.value as any)?.includes?.(expected);
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const fmtValue = format(context.value);
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const fmtExpected = format(expected);
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if (context.isNot) {
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if (doesContain) {
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throw new AssertionError(
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`The value ${fmtValue} contains the expected item ${fmtExpected}`,
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);
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}
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} else {
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if (!doesContain) {
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throw new AssertionError(
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`The value ${fmtValue} doesn't contain the expected item ${fmtExpected}`,
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);
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}
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}
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}
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export function toContainEqual(
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context: MatcherContext,
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expected: unknown,
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): MatchResult {
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const { value } = context;
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assertIsIterable(value);
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let doesContain = false;
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for (const item of value) {
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if (equal(item, expected, context)) {
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doesContain = true;
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break;
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}
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}
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const prettyStringify = (js: unknown) =>
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JSON.stringify(js, null, "\t")
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.replace(/\"|\n|\t/g, "")
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.slice(0, 100);
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const fmtValue = prettyStringify(context.value);
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const fmtExpected = prettyStringify(expected);
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if (context.isNot) {
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if (doesContain) {
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throw new AssertionError(
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`The value contains the expected item:
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Value: ${fmtValue}
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Expected: ${fmtExpected}`,
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);
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}
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} else {
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if (!doesContain) {
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throw new AssertionError(
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`The value doesn't contain the expected item:
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Value: ${fmtValue}
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Expected: ${fmtExpected}`,
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);
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}
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}
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}
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// deno-lint-ignore no-explicit-any
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function assertIsIterable(value: any): asserts value is Iterable<unknown> {
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if (value == null) {
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throw new AssertionError("The value is null or undefined");
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}
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if (typeof value[Symbol.iterator] !== "function") {
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throw new AssertionError("The value is not iterable");
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}
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}
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export function toMatch(
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context: MatcherContext,
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expected: RegExp,
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): MatchResult {
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if (context.isNot) {
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assertNotMatch(
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String(context.value),
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expected,
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context.customMessage,
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);
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} else {
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assertMatch(String(context.value), expected, context.customMessage);
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}
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}
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export function toMatchObject(
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context: MatcherContext,
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expected: Record<PropertyKey, unknown> | Record<PropertyKey, unknown>[],
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): MatchResult {
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if (context.isNot) {
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let objectMatch = false;
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try {
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assertObjectMatch(
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// deno-lint-ignore no-explicit-any
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context.value as Record<PropertyKey, any>,
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expected as Record<PropertyKey, unknown>,
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context.customMessage,
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);
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objectMatch = true;
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const actualString = format(context.value);
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const expectedString = format(expected);
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throw new AssertionError(
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`Expected ${actualString} to NOT match ${expectedString}`,
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);
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} catch (e) {
|
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if (objectMatch) {
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throw e;
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}
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return;
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}
|
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} else {
|
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assertObjectMatch(
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// deno-lint-ignore no-explicit-any
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context.value as Record<PropertyKey, any>,
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expected as Record<PropertyKey, unknown>,
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context.customMessage,
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);
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}
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}
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export function toHaveBeenCalled(context: MatcherContext): MatchResult {
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const calls = getMockCalls(context.value);
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const hasBeenCalled = calls.length > 0;
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|
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if (context.isNot) {
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if (hasBeenCalled) {
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throw new AssertionError(
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`Expected mock function not to be called, but it was called ${calls.length} time(s)`,
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);
|
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}
|
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} else {
|
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if (!hasBeenCalled) {
|
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throw new AssertionError(
|
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`Expected mock function to be called, but it was not called`,
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);
|
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}
|
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}
|
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}
|
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|
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export function toHaveBeenCalledTimes(
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context: MatcherContext,
|
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expected: number,
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): MatchResult {
|
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const calls = getMockCalls(context.value);
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|
|
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if (context.isNot) {
|
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if (calls.length === expected) {
|
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throw new AssertionError(
|
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`Expected mock function not to be called ${expected} time(s), but it was`,
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);
|
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}
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} else {
|
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if (calls.length !== expected) {
|
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throw new AssertionError(
|
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`Expected mock function to be called ${expected} time(s), but it was called ${calls.length} time(s)`,
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);
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}
|
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}
|
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}
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|
|
export function toHaveBeenCalledWith(
|
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context: MatcherContext,
|
|
...expected: unknown[]
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): MatchResult {
|
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const calls = getMockCalls(context.value);
|
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const hasBeenCalled = calls.some((call) => equal(call.args, expected));
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|
|
|
if (context.isNot) {
|
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if (hasBeenCalled) {
|
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throw new AssertionError(
|
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`Expected mock function not to be called with ${
|
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inspectArgs(expected)
|
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}, but it was`,
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);
|
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}
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} else {
|
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if (!hasBeenCalled) {
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let otherCalls = "";
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if (calls.length > 0) {
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otherCalls = `\n Other calls:\n ${
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calls.map((call) => inspectArgs(call.args)).join("\n ")
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}`;
|
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}
|
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throw new AssertionError(
|
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`Expected mock function to be called with ${
|
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inspectArgs(expected)
|
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}, but it was not.${otherCalls}`,
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);
|
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}
|
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}
|
|
}
|
|
export function toHaveBeenLastCalledWith(
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context: MatcherContext,
|
|
...expected: unknown[]
|
|
): MatchResult {
|
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const calls = getMockCalls(context.value);
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const hasBeenCalled = calls.length > 0 &&
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equal(calls.at(-1)?.args, expected);
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|
|
|
if (context.isNot) {
|
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if (hasBeenCalled) {
|
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throw new AssertionError(
|
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`Expected mock function not to be last called with ${
|
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inspectArgs(expected)
|
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}, but it was`,
|
|
);
|
|
}
|
|
} else {
|
|
if (!hasBeenCalled) {
|
|
const lastCall = calls.at(-1);
|
|
if (!lastCall) {
|
|
throw new AssertionError(
|
|
`Expected mock function to be last called with ${
|
|
inspectArgs(expected)
|
|
}, but it was not`,
|
|
);
|
|
} else {
|
|
throw new AssertionError(
|
|
`Expected mock function to be last called with ${
|
|
inspectArgs(expected)
|
|
}, but it was last called with ${inspectArgs(lastCall.args)}`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
export function toHaveBeenNthCalledWith(
|
|
context: MatcherContext,
|
|
nth: number,
|
|
...expected: unknown[]
|
|
): MatchResult {
|
|
if (nth < 1) {
|
|
throw new Error(`nth must be greater than 0: received ${nth}`);
|
|
}
|
|
|
|
const calls = getMockCalls(context.value);
|
|
const callIndex = nth - 1;
|
|
const hasBeenCalled = calls.length > callIndex &&
|
|
equal(calls[callIndex]?.args, expected);
|
|
|
|
if (context.isNot) {
|
|
if (hasBeenCalled) {
|
|
throw new AssertionError(
|
|
`Expected the n-th call (n=${nth}) of mock function is not with ${
|
|
inspectArgs(expected)
|
|
}, but it was`,
|
|
);
|
|
}
|
|
} else {
|
|
if (!hasBeenCalled) {
|
|
const nthCall = calls[callIndex];
|
|
if (!nthCall) {
|
|
throw new AssertionError(
|
|
`Expected the n-th call (n=${nth}) of mock function is with ${
|
|
inspectArgs(expected)
|
|
}, but the n-th call does not exist`,
|
|
);
|
|
} else {
|
|
throw new AssertionError(
|
|
`Expected the n-th call (n=${nth}) of mock function is with ${
|
|
inspectArgs(expected)
|
|
}, but it was with ${inspectArgs(nthCall.args)}`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
export function toHaveReturned(context: MatcherContext): MatchResult {
|
|
const calls = getMockCalls(context.value);
|
|
const returned = calls.filter((call) => call.returns);
|
|
|
|
if (context.isNot) {
|
|
if (returned.length > 0) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to not have returned, but it returned ${returned.length} times`,
|
|
);
|
|
}
|
|
} else {
|
|
if (returned.length === 0) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to have returned, but it did not return`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
export function toHaveReturnedTimes(
|
|
context: MatcherContext,
|
|
expected: number,
|
|
): MatchResult {
|
|
const calls = getMockCalls(context.value);
|
|
const returned = calls.filter((call) => call.returns);
|
|
|
|
if (context.isNot) {
|
|
if (returned.length === expected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to not have returned ${expected} times, but it returned ${returned.length} times`,
|
|
);
|
|
}
|
|
} else {
|
|
if (returned.length !== expected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to have returned ${expected} times, but it returned ${returned.length} times`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
export function toHaveReturnedWith(
|
|
context: MatcherContext,
|
|
expected: unknown,
|
|
): MatchResult {
|
|
const calls = getMockCalls(context.value);
|
|
const returned = calls.filter((call) => call.returns);
|
|
const returnedWithExpected = returned.some((call) =>
|
|
equal(call.returned, expected)
|
|
);
|
|
|
|
if (context.isNot) {
|
|
if (returnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to not have returned with ${
|
|
inspectArg(expected)
|
|
}, but it did`,
|
|
);
|
|
}
|
|
} else {
|
|
if (!returnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to have returned with ${
|
|
inspectArg(expected)
|
|
}, but it did not`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
export function toHaveLastReturnedWith(
|
|
context: MatcherContext,
|
|
expected: unknown,
|
|
): MatchResult {
|
|
const calls = getMockCalls(context.value);
|
|
const returned = calls.filter((call) => call.returns);
|
|
const lastReturnedWithExpected = returned.length > 0 &&
|
|
equal(returned.at(-1)?.returned, expected);
|
|
|
|
if (context.isNot) {
|
|
if (lastReturnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to not have last returned with ${
|
|
inspectArg(expected)
|
|
}, but it did`,
|
|
);
|
|
}
|
|
} else {
|
|
if (!lastReturnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to have last returned with ${
|
|
inspectArg(expected)
|
|
}, but it did not`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
export function toHaveNthReturnedWith(
|
|
context: MatcherContext,
|
|
nth: number,
|
|
expected: unknown,
|
|
): MatchResult {
|
|
if (nth < 1) {
|
|
throw new Error(`nth(${nth}) must be greater than 0`);
|
|
}
|
|
|
|
const calls = getMockCalls(context.value);
|
|
const returned = calls.filter((call) => call.returns);
|
|
const returnIndex = nth - 1;
|
|
const maybeNthReturned = returned[returnIndex];
|
|
const nthReturnedWithExpected = maybeNthReturned &&
|
|
equal(maybeNthReturned.returned, expected);
|
|
|
|
if (context.isNot) {
|
|
if (nthReturnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to not have n-th (n=${nth}) returned with ${
|
|
inspectArg(expected)
|
|
}, but it did`,
|
|
);
|
|
}
|
|
} else {
|
|
if (!nthReturnedWithExpected) {
|
|
throw new AssertionError(
|
|
`Expected the mock function to have n-th (n=${nth}) returned with ${
|
|
inspectArg(expected)
|
|
}, but it did not`,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
export function toThrow<E extends Error = Error>(
|
|
context: MatcherContext,
|
|
// deno-lint-ignore no-explicit-any
|
|
expected?: string | RegExp | E | (new (...args: any[]) => E),
|
|
): MatchResult {
|
|
if (typeof context.value === "function") {
|
|
try {
|
|
context.value = context.value();
|
|
} catch (err) {
|
|
context.value = err;
|
|
}
|
|
}
|
|
|
|
// deno-lint-ignore no-explicit-any
|
|
type ErrorClass = new (...args: any[]) => Error;
|
|
let expectClass: undefined | ErrorClass = undefined;
|
|
let expectMessage: undefined | string | RegExp = undefined;
|
|
if (expected instanceof Error) {
|
|
expectClass = expected.constructor as ErrorClass;
|
|
expectMessage = expected.message;
|
|
}
|
|
if (expected instanceof Function) {
|
|
expectClass = expected as ErrorClass;
|
|
}
|
|
if (typeof expected === "string" || expected instanceof RegExp) {
|
|
expectMessage = expected;
|
|
}
|
|
|
|
if (context.isNot) {
|
|
let isError = false;
|
|
try {
|
|
assertIsError(
|
|
context.value,
|
|
expectClass,
|
|
expectMessage,
|
|
context.customMessage,
|
|
);
|
|
isError = true;
|
|
throw new AssertionError(`Expected to NOT throw ${expected}`);
|
|
} catch (e) {
|
|
if (isError) {
|
|
throw e;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
return assertIsError(
|
|
context.value,
|
|
expectClass,
|
|
expectMessage,
|
|
context.customMessage,
|
|
);
|
|
}
|