Mockito

Mockito is a popular open-source mocking framework for unit tests in Java. It lets developers write clean, readable tests by creating mock objects, stubbing their behavior, verifying interactions, and using simple, fluent APIs to keep test setup minimal and intent obvious.

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JavaMockingTestingUnit TestingOpen SourceFramework

APIs

Mockito Core

The core Mockito mocking framework for creating mock objects, stubbing methods, verifying invocations, and writing expressive unit tests in Java. Mockito Core is consumed as a J...

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aid: mockito
name: Mockito
description: Mockito is a popular open-source mocking framework for unit tests in Java. It lets developers write clean, readable
  tests by creating mock objects, stubbing their behavior, verifying interactions, and using simple, fluent APIs to keep test
  setup minimal and intent obvious.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/mockito/refs/heads/main/apis.yml
created: '2024'
modified: '2026-04-28'
specificationVersion: '0.19'
tags:
- Java
- Mocking
- Testing
- Unit Testing
- Open Source
- Framework
apis:
- aid: mockito:mockito-core
  name: Mockito Core
  description: The core Mockito mocking framework for creating mock objects, stubbing methods, verifying invocations, and
    writing expressive unit tests in Java. Mockito Core is consumed as a Java library (Maven / Gradle artifact) rather than
    a network REST API.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://site.mockito.org
  tags:
  - Java
  - Mocking
  - Testing
  - Library
  properties:
  - type: Documentation
    url: https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html
  - type: User Guide
    url: https://github.com/mockito/mockito/wiki
  - type: GitHubRepository
    url: https://github.com/mockito/mockito
  - type: Maven Central
    url: https://central.sonatype.com/artifact/org.mockito/mockito-core
common:
- type: Website
  url: https://site.mockito.org
- type: GitHubOrganization
  url: https://github.com/mockito
- type: GettingStarted
  url: https://site.mockito.org/#how
- type: ReleaseNotes
  url: https://github.com/mockito/mockito/releases
- type: Contributing Guide
  url: https://github.com/mockito/mockito/blob/main/.github/CONTRIBUTING.md
- type: License
  url: https://github.com/mockito/mockito/blob/main/LICENSE
- type: Code of Conduct
  url: https://github.com/mockito/mockito/blob/main/.github/CODE_OF_CONDUCT.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com