invertase/spec

Matchers to implement

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#1 opened on Jul 14, 2021

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enhancementgood first issuehacktoberfesthelp wanted

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Description

  • expect(value)
  • expect.extend(matchers)
  • expect.anything()
  • expect.any(constructor)
  • expect.arrayContaining(array)
  • expect.assertions(number)
  • expect.hasAssertions()
  • expect.not.arrayContaining(array)
  • expect.not.objectContaining(object)
  • expect.not.stringContaining(string)
  • expect.not.stringMatching(string | regexp)
  • expect.objectContaining(object)
  • expect.stringContaining(string)
  • expect.stringMatching(string | regexp)
  • expect.addSnapshotSerializer(serializer)
  • .not
  • .resolves
  • .rejects
  • .toBe(value)
  • .toHaveBeenCalled()
  • .toHaveBeenCalledTimes(number)
  • .toHaveBeenCalledWith(arg1, arg2, ...)
  • .toHaveBeenLastCalledWith(arg1, arg2, ...)
  • .toHaveBeenNthCalledWith(nthCall, arg1, arg2, ....)
  • .toHaveReturned()
  • .toHaveReturnedTimes(number)
  • .toHaveReturnedWith(value)
  • .toHaveLastReturnedWith(value)
  • .toHaveNthReturnedWith(nthCall, value)
  • .toHaveLength(number)
  • .toHaveProperty(keyPath, value?)
  • .toBeCloseTo(number, numDigits?)
  • .toBeDefined()
  • .toBeFalsy()
  • .toBeGreaterThan(number | bigint)
  • .toBeGreaterThanOrEqual(number | bigint)
  • .toBeLessThan(number | bigint)
  • .toBeLessThanOrEqual(number | bigint)
  • .toBeInstanceOf(Class)
  • .toBeNull()
  • .toBeTruthy()
  • .toBeUndefined()
  • .toBeNaN()
  • .toContain(item)
  • .toContainEqual(item)
  • .toEqual(value)
  • .toMatch(regexp | string)
  • .toMatchObject(object)
  • .toMatchSnapshot(propertyMatchers?, hint?)
  • .toMatchInlineSnapshot(propertyMatchers?, inlineSnapshot)
  • .toStrictEqual(value)
  • .toThrow(error?)
  • .toThrowErrorMatchingSnapshot(hint?)
  • .toThrowErrorMatchingInlineSnapshot(inlineSnapshot)

Contributor guide

Research direction
Review the existing matchers implementation (e.g., '.toBe', '.toEqual') to understand the pattern, then implement the listed matchers one by one.
Tech stack
dart
Domain
testing
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Dart
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50