Migrate Android instrumented tests to JUnit 4 #9260
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JUnit 5 tests don't run on Android API 21-25 due to limitations of the android-junit5 plugin. This change migrates the android-test module to use JUnit 4 for broader device compatibility. Changes: - Replace JUnit 5 annotations with JUnit 4 equivalents - @beforeeach -> @before - @AfterEach -> @after - @disabled -> @ignore - @RegisterExtension -> removed (manual lifecycle management) - @tag -> removed (use @category if needed) - Replace JUnit 5 assertions/assumptions with JUnit 4 - Replace TestAbortedException with AssumptionViolatedException - Add @RunWith(AndroidJUnit4::class) to test classes - Remove de.mannodermaus.android-junit5 plugin - Update test instrumentation runner configuration - Manually start/stop MockWebServer in test setup/teardown - Simplify client creation without OkHttpClientTestRule Fixes square#9134
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Summary
Migrate the android-test module from JUnit 5 to JUnit 4 to enable tests to run on Android API 21-25.
The JUnit 5 tests weren't running on older Android versions due to limitations of the android-junit5 plugin (requires API 26+).
Changes
Annotation migrations:
@BeforeEach→@Before@AfterEach→@After@Disabled→@Ignore@Tag→ removed@RegisterExtension→ removedImport changes:
org.junit.jupiter.api.*→org.junit.*TestAbortedException→AssumptionViolatedExceptionBuild changes:
de.mannodermaus.android-junit5pluginAndroidJUnitRunnerTest infrastructure:
@RunWith(AndroidJUnit4::class)to test classes@Before/@AfterOkHttpClientTestRuleTest Plan
These tests should now run on all supported Android versions (API 21+).
Fixes #9134