Write unit, integration, and slice tests for Spring Boot 3 applications. Use when writing unit tests, integration tests, or slice tests for Spring Boot 3 applications.
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[BE-TEST-01] Parameterized Tests for Equivalent Cases: Prefer @ParameterizedTest (@CsvSource, @MethodSource) when methods have multiple equivalent inputs or boundary permutations. Distinct scenarios may stay separate test methods. Reviewers must not demand parameterized rewrites without a behavioral gap.[BE-TEST-02] Ban on Brittle DB Mock String Matching: Do not use string-matching mocks for raw SQL queries. Test pure domain calculations directly, or use Testcontainers for database repository verification.[BE-TEST-03] Ban on Shallow Assertions: Never assert only assertThat(result).isNotNull() without inspecting domain fields, status codes, and invariants.[BE-TEST-04] Ban on Pass-Through Interface Mocks: Repositories and service handlers must test contract compliance and error mapping. Ban 1:1 pass-through mock echoing without contract assertions.[BE-TEST-05] Bug-First Regression Lock: Every PR fixing a bug ticket or with title fix(...) must introduce a test reproducing the defect prior to the fix.returns 404) ([BE-TEST-05]).[BE-TEST-01]).[BE-TEST-02]): Use Testcontainers for DB/Queues. Avoid H2/Embedded.[BE-TEST-03]): Use AssertJ (assertThat) over JUnit assertions; avoid shallow checks.[BE-TEST-04]): Use @MockBean for downstream dependencies in Slice Tests; avoid pass-through mock echoing.See implementation examples for WebMvcTest slice tests and Testcontainers integration tests.
[BE-TEST-01] Stylistic parameterized rewrites: Do not demand parameterized refactoring of passing tests without a behavioral gap.[BE-TEST-02] Brittle DB mock string matching: Do not match raw SQL strings in mocks; use Testcontainers.[BE-TEST-03] Shallow assertions: Never assert only assertThat(result).isNotNull() without inspecting domain fields or status codes.[BE-TEST-04] Pass-through mock echoing: Ban 1:1 pass-through mock echoing without contract assertions.[BE-TEST-05] Bug fix without reproduction test: Ban bug fixes without a regression test.No reviews yet. Tell others what you thought.
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Upgrade an Android project to Android Gradle Plugin (AGP) 9. Use when migrating to AGP 9, updating Gradle build files, migrating to built-in Kotlin, or adopting the new AGP DSL.
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Apply Clean Architecture layering, modularization, and Unidirectional Data Flow in Android projects. Use when setting up project structure, placing code in layers, configuring feature/core modules, or implementing UDF patterns; defer Compose state and ViewModel/StateFlow implementation to their specific skills.
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Implement WorkManager and background processing correctly on Android. Use when creating Worker classes, scheduling tasks, choosing between WorkManager and Foreground Services, or setting up Hilt in workers; defer FCM and notification delivery to android-notifications.
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Build high-performance declarative UI with Jetpack Compose. Use when writing Composable functions, optimizing recomposition, hoisting state, or working with LazyColumn and side effects; defer deep-link and navigation routing to android-navigation.
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Migrate an Android XML View to Jetpack Compose following a structured 10-step workflow. Use when converting XML layouts to Compose, setting up Compose in an existing View-based project, or incrementally adopting Compose.
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Write correct coroutine scopes, lifecycle collection, and dispatcher injection in Android production code. Use for suspend functions, coroutine scopes, and dispatcher mechanics; defer ViewModel StateFlow/LiveData architecture, Fragment lifecycle recipes, persistence/notifications, and unit-test recipes to their specific skills.
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