Use this skill to test LazyColumn, LazyRow, and LazyVerticalGrid correctly — tag the container with Modifier.testTag(...), tag each item by its key, scroll via the semantic action (hasScrollAction(), performScrollToIndex, performScrollToKey) or via Modifier.testTag plus performTouchInput { swipeUp() }, and verify visibility with assertIsDisplayed (NOT assertExists, since off-screen lazy items still exist as semantic nodes in some configurations). Covers LazyListState.layoutInfo.visibleItemsInfo as the highest-signal probe, mainClock.autoAdvance = false for animated item placement, and the parameterized vertical/horizontal base-class pattern. Use when the developer asks "how do I scroll a LazyColumn in a test", "assertExists vs assertIsDisplayed", "scroll to a key", "test item placement animation", or sees a test pass when an item is off-screen.
Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI
Supported by the Atlas install prompt. Skill-specific requirements vary.
Skill stats
Skills1CategoryEngineeringStars0
About this skill
Use this skill to test LazyColumn, LazyRow, and LazyVerticalGrid correctly — tag the container with Modifier.testTag(...), tag each item by its key, scroll via the semantic action (hasScrollAction(), performScrollToIndex, performScrollToKey) or via Modifier.testTag plus performTouchInput { swipeUp() }, and verify visibility with assertIsDisplayed (NOT assertExists, since off-screen lazy items still exist as semantic nodes in some configurations). Covers LazyListState.layoutInfo.visibleItemsInfo as the highest-signal probe, mainClock.autoAdvance = false for animated item placement, and the parameterized vertical/horizontal base-class pattern. Use when the developer asks "how do I scroll a LazyColumn in a test", "assertExists vs assertIsDisplayed", "scroll to a key", "test item placement animation", or sees a test pass when an item is off-screen.
Quick start
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Use this skill to test `LazyColumn`, `LazyRow`, and `LazyVerticalGrid` correctly — tag the container with `Modifier.testTag(...)`, tag each item by its key, scroll via the semantic action (`hasScrollAction()`, `performScrollToIndex`, `performScrollToKey`) or via `Modifier.testTag` plus `performTouchInput { swipeUp() }`, and verify visibility with `assertIsDisplayed` (NOT `assertExists`, since off-screen lazy items still exist as semantic nodes in some configurations). Covers `LazyListState.layoutInfo.visibleItemsInfo` as the highest-signal probe, `mainClock.autoAdvance = false` for animated item placement, and the parameterized vertical/horizontal base-class pattern. Use when the developer asks "how do I scroll a LazyColumn in a test", "assertExists vs assertIsDisplayed", "scroll to a key", "test item placement animation", or sees a test pass when an item is off-screen.
About this listing
Category
Engineering
Reported license
Apache-2.0
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLI