openrewrite/rewrite-testing-frameworks

OpenRewrite recipes that perform common Java testing migration tasks.

Stars: 100
Forks: 105
Open beginner issues: 0
Indexed issues: 34
Avg merge: 2h 25m
Merged PRs (30d): 9

Dominant language: Java
License: No license data
Last GitHub push: Sep 11, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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34 open issues indexed

Issue when MockedStatic field is defined with an inline Mockito.mockStatic initialiser Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 74/100

openrewrite/rewrite-testing-frameworks#1127 · Opened Sep 17, 2026
`ParameterizedRunnerToParameterized` silently skips classes whose `@Parameters` method is inherited, leaving a partially migrated class that Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

openrewrite/rewrite-testing-frameworks#1126 · Opened Sep 14, 2026
`JUnit4to5Migration` moves `Parameterized` parameter assignment after `@BeforeEach`, so setup methods read null Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 70/100

openrewrite/rewrite-testing-frameworks#1125 · Opened Sep 14, 2026
`ExpectedExceptionToAssertThrows` emits uncompilable code when `expect(Matcher)` is given a matcher narrower than `Throwable` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 65/100

openrewrite/rewrite-testing-frameworks#1124 · Opened Sep 14, 2026
`JUnit4to5Migration` creates one `mockStatic` registration per stubbing inside `@Before`, which Mockito rejects at runtime Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 78/100

openrewrite/rewrite-testing-frameworks#1123 · Opened Sep 14, 2026
Mockito1to5Migration leaves anyListOf uncompilable when matchers are reached through `import static org.mockito.Mockito.*` Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

openrewrite/rewrite-testing-frameworks#1115 · Opened Aug 30, 2026
MigrateJUnitTestCase rewrites super.run(TestResult) to Assertions.run(...), which does not exist Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

openrewrite/rewrite-testing-frameworks#1114 · Opened Aug 30, 2026
JUnit4to5Migration removes junit:junit without adding Jupiter when tests extend junit.framework.TestCase Open

Difficulty 3/5 1-2 days Newbie friendliness 78/100

openrewrite/rewrite-testing-frameworks#1113 · Opened Aug 29, 2026
JUnit 4 to 5 migration discards the one-time setup a `TestSetup` decorator performed, breaking tests at run time Open

bug

Difficulty 5/5 Over a week Newbie friendliness 48/100

openrewrite/rewrite-testing-frameworks#1110 · Opened Aug 26, 2026
A retained `TestCase(String)` constructor leaves the migrated test class unrunnable under JUnit 5 Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 70/100

openrewrite/rewrite-testing-frameworks#1108 · 1 comment · Opened Aug 25, 2026
`MigrateJUnitTestCase` removes the `TestCase(String)` constructor without updating its callers, breaking compilation Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

openrewrite/rewrite-testing-frameworks#1107 · Opened Aug 25, 2026
PowerMock MemberModifier support Open

enhancement mockito recipe

Difficulty 4/5 3-5 days Newbie friendliness 38/100

openrewrite/rewrite-testing-frameworks#784 · 1 comment · Opened Aug 6, 2025
Recipe to add missing `@Test` annotations Open

recipe

Difficulty 5/5 Over a week Newbie friendliness 45/100

openrewrite/rewrite-testing-frameworks#772 · 2 comments · Opened Jul 22, 2025
JUnit 4 to 5: use @ParameterizedClass when converting parameterized tests Open

enhancement recipe

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openrewrite/rewrite-testing-frameworks#743 · 1 reaction · Opened May 31, 2025
EasyMock to Mockito missing `expectLastCall` conversion Open

bug recipe

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openrewrite/rewrite-testing-frameworks#738 · 1 comment · Opened May 24, 2025
UpgradeSpringBoot_3_3 removes imports for ArgumentMatchers and Mockito from groovy tests Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#723 · 2 comments · Opened May 7, 2025
Powermock replacement: Powermock.mockStatic() with Multiple Classes leads to compilation errors Open

bug mockito recipe

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openrewrite/rewrite-testing-frameworks#697 · 1 comment · Opened Apr 9, 2025
JMock to Mockito Migration Open

mockito recipe

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#529 · 4 comments · Opened Jun 17, 2024
Convert JMockit `@Tested` and `Deencapsulation` when migrating to Mockito Open

mockito recipe

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#522 · Opened Jun 13, 2024
JMockit to Mockito - rewrite expectation results with the correct type Open

enhancement mockito

Difficulty 5/5 Over a week Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#508 · 5 comments · 2 reactions · Opened Apr 17, 2024
`TestsShouldNotBePublic` should reduce visibility if used elsewhere in Javadoc links Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 43/100

openrewrite/rewrite-testing-frameworks#458 · 5 comments · Opened Jan 15, 2024
JUnit 5 recipe request: use lambdas for assertion messages that perform computations Open

enhancement recipe

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#453 · 1 reaction · Opened Jan 4, 2024
Testcontainers best practices recipes Open

recipe testcontainers

Difficulty 5/5 Over a week Newbie friendliness 25/100

openrewrite/rewrite-testing-frameworks#438 · 1 comment · 1 reaction · Opened Dec 5, 2023
Align JUnit dependencies using the BOM Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#318 · Opened Feb 23, 2023
Call configureStaticDsl(true) on WireMock builder when static DSL methods are used Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openrewrite/rewrite-testing-frameworks#278 · 1 reaction · Opened Oct 27, 2022
JUnit 4 to 5 - add recipe to migrate Suites to use Select syntax Open

recipe

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#231 · Opened Jun 6, 2022
Remove `@VisibleForTesting` if code is not used in tests Open

recipe uses-dataflow

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openrewrite/rewrite-testing-frameworks#225 · Opened Apr 27, 2022
Remove `@VisibleForTesting` if variable is accessed from production code Open

recipe

Difficulty 3/5 1-2 days Newbie friendliness 25/100

openrewrite/rewrite-testing-frameworks#224 · 4 comments · Opened Apr 27, 2022
Replace usage of `graphql.Assert` with test assertions Open

good first issue recipe

Difficulty 3/5 1-2 days Newbie friendliness 48/100

openrewrite/rewrite-testing-frameworks#221 · 1 comment · Opened Apr 18, 2022
Use Parameterized Tests. RSPEC-5976 Open

recipe

Difficulty 4/5 3-5 days Newbie friendliness 30/100

openrewrite/rewrite-testing-frameworks#203 · 1 comment · Opened Mar 30, 2022
Recipe to migrate from system-rules to system-stubs Open

recipe

Difficulty 4/5 3-5 days Newbie friendliness 42/100

openrewrite/rewrite-testing-frameworks#197 · 1 comment · Opened Mar 28, 2022
Exclude Junit 4 indefinitely using maven-enforcer-plugin Open

recipe

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openrewrite/rewrite-testing-frameworks#196 · 2 comments · Opened Mar 28, 2022
Remove junit-vintage-engine with the recipe JUnit4to5Migration Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

openrewrite/rewrite-testing-frameworks#195 · 4 comments · Opened Mar 28, 2022
ParameterizedRunnerToParameterized update to account for test class inheritance Open

recipe

openrewrite/rewrite-testing-frameworks#91 · 5 comments · 1 assignee · Opened Mar 24, 2021

A short digest of beginner-friendly GitHub issues.