Mocks and Stubs

Packages that help with mocking and stubbing in tests

mox

9.1

Mocks and explicit contracts for Elixir

1.4K 1.4M/wk v1.2.0 1y ago 2mo ago

mox

9.1
Mocks and explicit contracts for Elixir
Popularity
1,395 ★
74 forks · 17 watching
Activity
5 issues
1 open PRs · 83 merged
Downloads
1,402,026/wk
23,254 yesterday · 30.2M total
Release
v1.2.0
August 14, 2024

meck

6.6

A mocking framework for Erlang

838 1.4M/wk v1.2.0 2mo ago 2mo ago

meck

6.6
A mocking framework for Erlang
erlang testing mocking-library meck
Popularity
838 ★
213 forks · 28 watching
Activity
10 issues
3 open PRs · 93 merged
Downloads
1,425,207/wk
23,914 yesterday · 67.8M total
Release
v1.2.0
May 27, 2026

mock

4.8

A mocking library for the Elixir language. We use the Erlang meck library to provide module mocking functionality for Elixir. It uses macros in Elixir to expose the functionality in a convenient manner for integrating in Elixir tests.

690 706.1K/wk v0.3.9 1y ago 1y ago

mock

4.8
A mocking library for the Elixir language. We use the Erlang meck library to provide module mocking functionality for Elixir. It uses macros in Elixir to expose the functionality in a convenient manner for integrating in Elixir tests.
Popularity
690 ★
80 forks · 10 watching
Activity
20 issues
3 open PRs · 72 merged
Downloads
706,106/wk
11,065 yesterday · 20.7M total
Release
v0.3.9
December 16, 2024

hammox

Recently Released
3.8

Automated contract testing for functions and mocks.

590 247.2K/wk v1.0.0 4d ago 1y ago

hammox

Recently Released
3.8
Automated contract testing for functions and mocks.
elixir testing mock mox contract-testing typechecker typechecking typespec dialyzer contracts behaviours contract behaviour behaviour-typespec unit-testing typespecs mocks explicit-contracts type-checking type-checker
Popularity
590 ★
31 forks · 1 watching
Activity
12 issues
5 open PRs · 84 merged
Downloads
247,237/wk
4,162 yesterday · 4.6M total
Release
v1.0.0
July 24, 2026

mockery

0.6

Simple mocking library for asynchronous testing.

94 153.3K/wk v2.5.0 10mo ago 10mo ago

mockery

0.6
Simple mocking library for asynchronous testing.
elixir-lang elixir exunit asynchronous-tests mock-library mocking testing unit-testing async-true
Popularity
94 ★
10 forks · 1 watching
Activity
0 issues
0 open PRs · 83 merged
Downloads
153,303/wk
2,720 yesterday · 2.5M total
Release
v2.5.0
September 24, 2025

mecks_unit

0.4

A simple Elixir package to elegantly mock module functions within (asynchronous) ExUnit tests using Erlang's :meck library

54 1.1K/wk v0.1.9 6y ago 6y ago

mecks_unit

0.4
A simple Elixir package to elegantly mock module functions within (asynchronous) ExUnit tests using Erlang's :meck library
elixir mocking exunit meck asynchronous elegant
Popularity
54 ★
7 forks · 5 watching
Activity
1 issues
0 open PRs · 0 merged
Downloads
1,074/wk
25 yesterday · 73.0K total
Release
v0.1.9
April 19, 2020

em

0.2

An EasyMock inspired mocking library for erlang.

24 314/wk v7.3.0 3y ago 3y ago

em

0.2
An EasyMock inspired mocking library for erlang.
Popularity
24 ★
8 forks · 3 watching
Activity
1 issues
0 open PRs · 7 merged
Downloads
314/wk
19 yesterday · 25.6K total
Release
v7.3.0
March 28, 2023

placebo

0.1

A mocking library for ExUnit inspired by RSpec and based on meck.

15 2.7K/wk v2.0.0 5y ago 3y ago

placebo

0.1
A mocking library for ExUnit inspired by RSpec and based on meck.
Popularity
15 ★
1 forks · 2 watching
Activity
0 issues
0 open PRs · 18 merged
Downloads
2,671/wk
273 yesterday · 155.9K total
Release
v2.0.0
December 05, 2020

ex_meck

0.0

A mocking library particularly suitable for stateful property based testing.

2 9.4K/wk v0.3.0 6y ago 5y ago

ex_meck

0.0
A mocking library particularly suitable for stateful property based testing.
Popularity
2 ★
4 forks · 1 watching
Activity
0 issues
0 open PRs · 5 merged
Downloads
9,386/wk
102 yesterday · 861.0K total
Release
v0.3.0
December 01, 2019

ex_mock

0.0

A mocking libary for the Elixir language. We use the Erlang meck library to provide module mocking functionality for Elixir. It uses macros in Elixir to expose the functionality in a convenient manner for integrating in Elixir tests.

1 1.5K/wk v0.1.1 9y ago 9y ago

ex_mock

0.0
A mocking libary for the Elixir language. We use the Erlang meck library to provide module mocking functionality for Elixir. It uses macros in Elixir to expose the functionality in a convenient manner for integrating in Elixir tests.
Popularity
1 ★
0 forks · 1 watching
Activity
0 issues
0 open PRs · 0 merged
Downloads
1,484/wk
13 yesterday · 52.7K total
Release
v0.1.1
June 01, 2017