import * as mod from "https://deno.land/std@0.211.0/expect/mod.ts";
Examples
Example 1
Example 1
import { expect } from "https://deno.land/std@0.211.0/expect/mod.ts";
const x = 6 * 7;
expect(x).toEqual(42);
expect(x).not.toEqual(0);
await expect(Promise.resolve(x)).resolves.toEqual(42);
Currently this module supports the following matchers:
toBe
toEqual
toStrictEqual
toMatch
toMatchObject
toBeDefined
toBeUndefined
toBeNull
toBeNaN
toBeTruthy
toBeFalsy
toContain
toContainEqual
toHaveLength
toBeGreaterThan
toBeGreaterThanOrEqual
toBeLessThan
toBeLessThanOrEqual
toBeCloseTo
toBeInstanceOf
toThrow
toHaveProperty
toHaveLength
Also this module supports the following mock related matchers:
toHaveBeenCalled
toHaveBeenCalledTimes
toHaveBeenCalledWith
toHaveBeenLastCalledWith
toHaveBeenNthCalledWith
toHaveReturned
toHaveReturnedTimes
toHaveReturnedWith
toHaveLastReturnedWith
toHaveNthReturnedWith
The following matchers are not supported yet:
toMatchSnapShot
toMatchInlineSnapShot
toThrowErrorMatchingSnapShot
toThrowErrorMatchingInlineSnapShot
The following asymmetric matchers are not supported yet:
expect.anything
expect.any
expect.arrayContaining
expect.not.arrayContaining
expect.closedTo
expect.objectContaining
expect.not.objectContaining
expect.stringContaining
expect.not.stringContaining
expect.stringMatching
expect.not.stringMatching
The following uitlities are not supported yet:
expect.assertions
expect.hasAssertions
expect.addEqualityTester
expect.addSnapshotSerializer
expect.extend
This module is largely inspired by x/expect module by Allain Lalonde.