build: migrate tests from JUnit 4 to JUnit 6 - #174
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📝 WalkthroughSummary by CodeRabbit
WalkthroughThe project migrates its Gradle test execution and module test suites from JUnit 4 to JUnit 5. Tests now use Jupiter annotations, assertions, lifecycle APIs, parameterized tests, and explicit exception assertions. ChangesJUnit 5 migration
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The migration removes the shared JUnit 4 catalog alias while two Android build files still reference libs.junit; when Android projects are enabled, Gradle configuration fails before tests run. The issue is conditional and outside the default build, but those builds are not merge-ready until the alias is restored or the consumers are updated. Poem
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 9.26% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 54 functions across 50 files. (20 skipped: 7 unsupported, 13 over the file limit.) ✨ Finishing Touches 💡 2📝 Generate docstrings 💡
🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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This was referenced Aug 27, 2026
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Inline comments:
In `@settings.gradle.kts`:
- Around line 12-15: Update the dependency catalog in settings.gradle.kts to
restore the junit alias expected by testImplementation(libs.junit) in both
Android projects, or consistently update those consumers to use an existing
JUnit catalog alias; ensure project configuration succeeds when local.properties
includes both projects.
Apply the same fix in `@settings.gradle.kts` around lines 12 - 15.
Apply the same fix in `@settings.gradle.kts` around lines 12 - 15.
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📒 Files selected for processing (70)
build-logic/src/main/kotlin/gestalt-library-common.gradle.ktsgestalt-asset-core/build.gradle.ktsgestalt-asset-core/gradle.lockfilegestalt-asset-core/src/test/java/org/terasology/gestalt/assets/AbstractFragmentProducerTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/AssetManagerTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/AssetTypeTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/ResourceUrnTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/module/AssetFileDataProducerTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/module/ModuleAwareAssetTypeManagerTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/module/ModuleDependencyResolutionStrategyTest.javagestalt-asset-core/src/test/java/org/terasology/gestalt/assets/module/autoreload/ModuleEnvironmentWatcherTest.javagestalt-di/build.gradle.ktsgestalt-di/gradle.lockfilegestalt-di/src/test/java/org/terasology/gestalt/di/AbstractBeanTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/AnnotationTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/AutoClosableTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/BeanContextResolutionTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/BeanEnvironmentTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/CollectionResolveTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/InheritanceBeanTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/ProviderInjectTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/SupplierInjectionTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/TestRegistryTests.javagestalt-di/src/test/java/org/terasology/gestalt/di/injection/DependencyInjectionTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/injection/DependencyResolutionTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/injection/OptionalDependencyTest.javagestalt-di/src/test/java/org/terasology/gestalt/di/scanner/standard/StandardScannerTest.javagestalt-entity-system/build.gradle.ktsgestalt-entity-system/gradle.lockfilegestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/component/management/ComponentManagerTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/component/management/ComponentTypeFactoryTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/component/management/ComponentTypeIndexTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/entity/FullSetupExample.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/event/EventProcessorTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/event/EventReceiverMethodSupportTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/event/EventSystemTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/prefab/PrefabInstantiationTest.javagestalt-entity-system/src/test/java/org/terasology/gestalt/entitysystem/prefab/PrefabJsonFormatTest.javagestalt-es-perf/build.gradle.ktsgestalt-es-perf/gradle.lockfilegestalt-es-perf/src/test/java/org/terasology/gestalt/entitysystem/component/management/perf/ComponentManagerTest.javagestalt-es-perf/src/test/java/org/terasology/gestalt/entitysystem/event/AbstractEventReceiverMethodSupportTest.javagestalt-inject-java/build.gradle.ktsgestalt-inject-java/gradle.lockfilegestalt-module/build.gradle.ktsgestalt-module/gradle.lockfilegestalt-module/src/test/java/org/terasology/gestalt/i18n/I18nMapTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/EmbeddedLibraryTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/ForceIncludeOptionalDependencyResolverTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/ModuleMetadataJsonAdapterTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/NormalDependencyResolverTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/PermissiveSandboxTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/SandboxTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/TableModuleRegistryTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/UseOptionalIfAvailableDependencyResolverTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/di/BeanContextInModuleTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/resources/BaseFileSourceTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/resources/ClasspathFileSourceTest.javagestalt-module/src/test/java/org/terasology/gestalt/module/sandbox/APIScannerTest.javagestalt-module/src/test/java/org/terasology/gestalt/naming/NameTest.javagestalt-module/src/test/java/org/terasology/gestalt/naming/NameVersionTest.javagestalt-module/src/test/java/org/terasology/gestalt/naming/VersionRangeTest.javagestalt-module/src/test/java/org/terasology/gestalt/naming/VersionTest.javagestalt-util/build.gradle.ktsgestalt-util/gradle.lockfilegestalt-util/src/test/java/org/terasology/gestalt/util/collection/KahnSorterTest.javagestalt-util/src/test/java/org/terasology/gestalt/util/io/FileExtensionPathMatcherTest.javagestalt-util/src/test/java/org/terasology/gestalt/util/reflection/ClassFactoryTest.javagestalt-util/src/test/java/org/terasology/gestalt/util/reflection/GenericsUtilTest.javasettings.gradle.kts
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Fixed: restored the |
gestalt-android has no test sources; drop its unused JUnit4 dependency. gestalt-android-testbed's local unit test (src/test) now runs on the JUnit Platform via AGP's testOptions.unitTests.all.useJUnitPlatform(). androidTest stays on JUnit4 - AndroidJUnitRunner doesn't support Jupiter. The junit (JUnit4) catalog alias is now unused; removed.
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Also migrated the Android modules' local unit tests: Also rebased onto latest |
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Closes #88.
Straightforward migration - all tests (except
gestalt-android-testbed's androidTest/local-unit-test files, left on JUnit4/androidx.test since that's a separate ecosystem and the module isn't even in the default build) now run on JUnit 6.1.3 (Platform + Jupiter + Vintage all unified under one version as of JUnit 6).org.junit.Test/Before/BeforeClass/AfterClass/Assert-> Jupiter equivalents across every test file.@Test(expected = X.class)(14 call sites) ->assertThrows.@Rule ExpectedException(DependencyResolutionTest) ->assertThrows.@RunWith(Parameterized.class)(FileExtensionPathMatcherTest) ->@ParameterizedTest+@MethodSource.junit.framework.TestCase(JUnit3-via-the-old-junit4-jar) static imports replaced with Jupiter'sAssertions.useJUnit()->useJUnitPlatform()in the shared test task config; version catalog now declaresjunit-jupiter-api/engine/params+junit-platform-launcherinstead ofjunit:junit:4.12.@Before/@Afterdomain annotations (event-receiver test fixtures, same simple name as JUnit's) - reverted those back. AndBeanContextInModuleTestcompared two arrays withassertEqualsinstead ofassertArrayEquals- passed under JUnit4, failed under Jupiter; fixed to the array-aware assertion, which is what the test actually meant.ModuleEnvironmentWatcherTest, so this branch's own CI isn't red for an unrelated pre-existing flake.Regenerated every affected
gradle.lockfile.Test plan:
./gradlew buildsucceeds (excluding the pre-existing, unrelatedSecurityManagerUnsupportedOperationExceptionfailures in SandboxTest/PermissiveSandboxTest/EmbeddedLibraryTest - those reproduce identically on unmigrateddevelopon this JDK, sinceSystem.setSecurityManageris now disabled by default; not something this PR touches or introduces)animalsnifferMainpasses on every module