feat(grid): implicit grid track sizing fixes + Phase 4 tests #778
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…ontent with width and height
…s (explicit + implicit) against the grid’s definite block-size, so implicit
fr rows share the remaining space instead of each resolving to the full height (webf/lib/src/rendering/grid.dart:2768).
- Added the new integration spec it('uses fr units in grid-auto-rows'...) (integration_tests/specs/css/css-grid/advanced-sizing/fr-
units.ts:228).
…fix auto row size
…d fix track space
|
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📝 WalkthroughWalkthroughThis PR introduces extensive CSS Grid integration test coverage for advanced sizing, alignment, dynamic behavior, and implicit grids, alongside implementation changes for grid rendering enhancements (fit-content, auto-fit/fill support), stacking context handling for negative z-index children, and flexbox refactoring. Changes
Sequence DiagramssequenceDiagram
participant DOM as DOM Tree
participant GridLayout as Grid Layout Engine
participant TrackResolution as Track Resolution
participant IntrinsicPass as Intrinsic Sizing Pass
participant DistributionPass as Distribution Pass
DOM->>GridLayout: Parse grid-template-columns with fit-content()
GridLayout->>TrackResolution: Resolve tracks (explicit + auto-fit collapse)
TrackResolution->>IntrinsicPass: Compute min/max contributions for fit-content tracks
IntrinsicPass->>IntrinsicPass: Clamp contributions to fit-content limits
IntrinsicPass->>DistributionPass: Apply clamp results
DistributionPass->>DistributionPass: Distribute remaining space among fr-tracks
DistributionPass->>GridLayout: Final track sizes respect fit-content clamping
GridLayout->>DOM: Layout grid items with constrained sizes
sequenceDiagram
participant Paint as Paint System
participant RenderLayoutBox as RenderLayoutBox
participant NegZCheck as Negative Z-Index Check
participant BGPaint as Background Paint
participant ChildPaint as Child Paint
Paint->>RenderLayoutBox: performPaint(context, offset)
RenderLayoutBox->>NegZCheck: _shouldPaintNegativeZIndexChildrenUnderBackground()
alt Negative Z-Index Children Exist
NegZCheck-->>BGPaint: true
BGPaint->>RenderLayoutBox: _paintNegativeZIndexChildrenUnderBackground()
RenderLayoutBox->>ChildPaint: Paint negatives before background
end
RenderLayoutBox->>BGPaint: paintDecoration() (background)
RenderLayoutBox->>ChildPaint: Paint remaining children
ChildPaint->>Paint: Stacking order: negatives < background < positives
Estimated code review effort🎯 4 (Complex) | ⏱️ ~60 minutes The PR requires careful review of: (1) dense grid rendering logic changes spanning fit-content clamping, auto-fit/fill collapse, implicit track resolution, and fr-unit distribution; (2) stacking context and negative z-index handling across multiple rendering layers with intricate painting/hit-testing order; (3) comprehensive test coverage validating numerous grid scenarios; and (4) flexbox refactoring consistency. Possibly related PRs
Suggested reviewers
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Pre-merge checks and finishing touches❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
✨ Finishing touches
🧪 Generate unit tests (beta)
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Actionable comments posted: 9
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⚠️ Outside diff range comments (1)
webf/lib/src/rendering/flow.dart (1)
1877-1909: IFC hit-testing path must skip negative-z children painted under backgroundIn the IFC branch of
hitTestChildren, you iterate through positioned/sticky children without checking whether they should be skipped due to negative z-indexing. Unlike the non-IFC fallback path (which callssuper.hitTestChildren()and respects the parent class'sskipNegativeslogic), this IFC path may allow hit-testing of negative-z children that are visually painted under the container's background.Mirror the negative z-index check from
RenderLayoutBox.hitTestChildren():final bool skipNegatives = _shouldPaintNegativeZIndexChildrenUnderBackground(); for (int i = paintingOrder.length - 1; i >= 0; i--) { final RenderBox child = paintingOrder[i]; if (child is RenderBoxModel && (child.renderStyle.isSelfPositioned() || child.renderStyle.isSelfStickyPosition())) { if (skipNegatives && _isNegativeZIndexStackingChild(child)) continue; // existing hit-test logic... } }Add a regression test for positioned
z-index:-1children under a non-transparent background to verify the intended behavior.
🧹 Nitpick comments (15)
integration_tests/specs/css/css-grid/alignment/align-items.ts (2)
199-200: Remove redundant gap setting.Line 199 sets
rowGap = '10px', then line 200 setsgap = '0'. Whilegapis a shorthand that sets bothrowGapandcolumnGap, setting it afterrowGapis redundant. Consider removing line 200 or setting onlycolumnGap = '0'.🔎 Proposed fix
grid.style.alignItems = 'center'; grid.style.rowGap = '10px'; - grid.style.gap = '0'; + grid.style.columnGap = '0'; grid.style.backgroundColor = '#e0f2f1';
220-222: Clarify the comment for distance calculation.The comment states "Distance from Item 1 top to Item 3 top: 80.00px" but the calculation subtracts 80 and expects 0, implying the actual distance is 90px (80px row height + 10px gap). The comment should reflect that the gap is being verified.
🔎 Proposed fix
const items = Array.from(grid.children) as HTMLElement[]; - // Distance from Item 1 top to Item 3 top: 80.00px - const distance = items[2].getBoundingClientRect().top - items[0].getBoundingClientRect().top - 80; - expect(distance).toBe(0); + // Verify 10px row gap: Item 3 top = Item 1 top + 80px row + 10px gap = 90px + const distance = items[2].getBoundingClientRect().top - items[0].getBoundingClientRect().top; + expect(distance).toBe(90);integration_tests/specs/css/css-grid/alignment/align-self.ts (3)
142-172: Strengthen baseline alignment assertion.The test creates items with different font sizes and applies baseline alignment, but only asserts that 3 items exist. This doesn't verify that baseline alignment is actually working correctly.
🔎 Consider verifying baseline alignment behavior
Add an assertion that checks the actual baseline alignment, such as verifying that the text baselines of items align:
const items = Array.from(grid.children) as HTMLElement[]; - expect(items.length).toBe(3); + // Verify baseline alignment is applied + expect(getComputedStyle(items[1]).alignSelf).toBe('baseline');Or verify spatial relationships that demonstrate baseline alignment is working.
209-239: Strengthen first baseline alignment assertion.Similar to the baseline test, this test only verifies item count rather than the actual first baseline alignment behavior.
🔎 Consider verifying first baseline alignment behavior
const items = Array.from(grid.children) as HTMLElement[]; - expect(items.length).toBe(3); + // Verify first baseline alignment is applied + const computedAlign = getComputedStyle(items[1]).alignSelf; + expect(computedAlign === 'first baseline' || computedAlign === 'baseline').toBe(true);
241-273: Strengthen auto alignment assertion.The test configures align-items: center and alignSelf: auto, but only checks item count. Consider verifying that auto actually inherits the center alignment.
🔎 Consider verifying auto inherits from align-items
const items = Array.from(grid.children) as HTMLElement[]; - // Auto should inherit from align-items (center) - expect(items.length).toBe(3); + // Auto should inherit from align-items (center) + expect(getComputedStyle(items[1]).alignSelf).toBe('auto'); + // Verify item 2 is actually centered like the others + const gridCenter = (grid.getBoundingClientRect().top + grid.getBoundingClientRect().bottom) / 2; + const item2Center = (items[1].getBoundingClientRect().top + items[1].getBoundingClientRect().bottom) / 2; + expect(Math.abs(item2Center - gridCenter)).toBeLessThan(1);integration_tests/specs/css/css-grid/alignment/safe-unsafe.ts (2)
1-1: Track the skipped safe/unsafe alignment test suite.The entire test suite is disabled with
xdescribe, meaning these tests are not running. This should be tracked to ensure safe/unsafe alignment implementation is completed and tests are enabled.Would you like me to open an issue to track enabling these tests once safe/unsafe alignment is fully implemented?
2-30: Strengthen safe vs unsafe alignment assertions.Both the safe and unsafe center alignment tests have identical assertions checking
width === 100, which doesn't actually verify the behavioral difference between safe and unsafe alignment. Safe alignment should prevent overflow in constrained scenarios, while unsafe allows it.🔎 Consider testing overflow scenarios
To properly test safe vs unsafe, create a scenario where overflow would occur:
it('handles safe center alignment', async () => { const grid = document.createElement('div'); grid.style.display = 'grid'; - grid.style.gridTemplateColumns = '100px'; - grid.style.gridTemplateRows = '80px'; + grid.style.gridTemplateColumns = '80px'; // Smaller than item + grid.style.gridTemplateRows = '60px'; grid.style.justifyContent = 'safe center'; grid.style.alignContent = 'safe center'; + grid.style.width = '80px'; + grid.style.height = '60px'; const item = document.createElement('div'); - item.textContent = 'Safe center'; + item.textContent = 'Large content that overflows'; + item.style.width = '120px'; // Larger than grid + item.style.height = '80px'; // Safe alignment should fall back to start when overflow would occur - expect(item.getBoundingClientRect().width).toBe(100); + expect(item.getBoundingClientRect().left).toBe(grid.getBoundingClientRect().left);Similar changes for unsafe to verify it allows overflow/centering regardless.
Also applies to: 32-60
integration_tests/specs/css/css-grid/implicit-grids/auto-rows.ts (1)
69-69: Consider more specific assertion for auto-sized content.The assertion
toBeGreaterThan(0)is minimal. Consider verifying the actual computed height to ensure content-based sizing works as expected, or at least check against a reasonable minimum based on padding and font metrics.webf/lib/src/rendering/flex.dart (1)
4854-4856: LGTM! Defensive null-position guard added to hit testing.The null check before delegating to
super.hitTestChildrencorrectly handles the edge case where position is null, returning false (no hits) as expected. This aligns with the hit-testing pattern refinements applied across grid and flow rendering code.Optional: Add clarifying comment
Consider adding a brief comment explaining the rationale for the null check, for example:
@override bool hitTestChildren(BoxHitTestResult result, {Offset? position}) { + // Return false when position is null since hit testing requires a valid position. if (position == null) return false; return super.hitTestChildren(result, position: position); }This would help future maintainers understand the defensive guard without needing to trace through the broader hit-testing protocol.
webf/lib/src/rendering/grid.dart (3)
2184-2245: Columnfit-content()integration is consistent with intrinsic sizing pathTreating
GridFitContentas max-content in_IntrinsicTrackKind, zeroingcolSizes[c]for those tracks, and then clamping them tofitContentColumnLimitsafter the intrinsic pass mirrors the spec’s “max-content, clamped by limit” behavior and matches the existing column intrinsic machinery. The additional range/flex resolution and auto-column clamping still compose correctly with the new masks.If you keep extending row support, consider extracting shared helpers for fit-content track masks and limit clamping to avoid duplicating the column logic.
Also applies to: 2295-2297, 2303-2311, 2611-2622
2696-2777: Rowfit-content()shrink-wrap behavior looks correct but only handles span-1 casesThe row-side
fit-content()pass correctly:
- Resets explicit fit-content rows to 0 before intrinsic sizing.
- Derives per-row min/max contributions from single-row-span, non-positioned items.
- Applies
rowSizes[r] = min(maxSize, max(minSize, limit)), which matchesmin(max-content, max(min-content, L))semantics.This intentionally ignores multi-row spans, which is a reasonable first step and should be covered by your new integration tests.
If tests reveal gaps for items spanning multiple fit-content rows, you may want a follow-up pass that attributes span contributions proportionally across the involved tracks.
3085-3102: Auto-fit collapse + post-collapsefrredistribution behaves sensiblyTracking trailing unused
auto-fitcolumns viaexplicitAutoFitColumns/explicitAutoFitColumnUsage, subtracting their combined width + gaps fromusedContentWidth, and then, whenhorizontalFree > 0, redistributing that free space to remaining flex tracks based onfrshare is a solid way to emulate browser behavior where 1fr tracks expand afterauto-fitcollapses empties.The logic also correctly avoids touching non-flex and non-justified tracks by limiting to
justificationColumnCountandflexFactorForColumnTrack.Consider documenting in a brief comment that only trailing unused
auto-fittracks are collapsed; this is subtle and will help future maintainers reason about middle-of-track-listauto-fitpatterns.Also applies to: 3184-3224
webf/lib/src/rendering/widget.dart (2)
330-410: Negativez-indexchildren painted under background with proper clippingThe trio
_isNegativeZIndexStackingChild,_shouldPaintNegativeZIndexChildrenUnderBackground, and_paintNegativeZIndexChildrenUnderBackgroundis well-structured:
- Only negative
z-indexchildren that establish a stacking context are treated as candidates.- The scan stops at the first non-negative direct child, relying on
paintingOrdersorting.- Painting under background respects
clipX/clipY, border radii, and scroll offsets viapaintScrollOffsetand a localclipRect/clipRRect.Calling this from
paintDecorationbeforesuper.paintDecorationand then skipping negatives inperformPaintprevents double painting and matches the intended “behind background” semantics.The
accumulateOffsetFromDescendanthelper is duplicated across several renderers; consider hoisting it into a shared utility onRenderBoxModelto avoid drift.Also applies to: 412-418
669-723: Negative-z skip in paint/hit-test is coherent but tightly couples to background behaviorUsing
skipNegatives = _shouldPaintNegativeZIndexChildrenUnderBackground()to:
- Omit negative stacking children from the main
performPaintpass, and- Skip them during
hitTestChildrenis internally consistent: anything explicitly painted as a negative layer under the widget’s background will also not receive hits, which matches the “hidden behind background” interpretation.
One caveat is that this assumes the container’s background (or an ancestor’s) should always occlude those children for hit-testing. If you later support transparent backgrounds or
pointer-events-like semantics, you may want a separate predicate for “skip in paint” vs “skip in hit-test”.If you run into cases where negative
z-indexchildren are still visibly on top (e.g., fully transparent parent backgrounds), consider adjusting_shouldPaintNegativeZIndexChildrenUnderBackground()or splitting it into two flags (paintUnderBackgroundvsskipHitTesting) and updating tests accordingly.Also applies to: 735-786
webf/lib/src/rendering/layout_box.dart (1)
536-574: hitTest/paint integration for negative-z children mostly matches paint orderThe new
hitTestChildrenimplementation:
- Walks
paintingOrderin reverse, respecting visual stacking.- Skips
RenderPositionPlaceholdernodes and non-sized children.- Applies fixed-position scroll compensation (
getTotalScrollOffset) before delegating to each child.- Uses
skipNegativesso children that were painted under background by_paintNegativeZIndexChildrenUnderBackgroundare also excluded from hit-testing at this level.
performPaintsimilarly avoids painting those negatives again whenskipNegativesis true, relying on the earlier under-background pass.This keeps paint and hit-test ordering consistent and avoids double-painting.
Given this pattern is mirrored in
RenderWidgetandRenderFlowLayout, consider factoringaccumulateOffsetFromDescendantand theskipNegativesloop into a shared helper onRenderLayoutBoxorRenderBoxModelto reduce duplicate logic.Also applies to: 594-599
| it('creates tracks with auto-fill and fixed size', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = 'repeat(auto-fill, 100px)'; | ||
| grid.style.gridTemplateRows = '80px'; | ||
| grid.style.width = '350px'; | ||
| grid.style.gap = '0'; | ||
| grid.style.backgroundColor = '#f5f5f5'; | ||
|
|
||
| for (let i = 0; i < 5; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726', '#BA68C8', '#9575CD'][i]; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
|
||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
|
||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // Should fit 3 columns (350/100 = 3), wrapping to rows | ||
| expect(items[0].getBoundingClientRect().width).toBe(100); | ||
| expect(items[1].getBoundingClientRect().width).toBe(100); | ||
| expect(items[2].getBoundingClientRect().width).toBe(100); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Grid width exceeds maximum testing window width.
Line 7 sets the grid width to 350px, which exceeds the documented maximum testing window width of 340px. This may cause clipping or unexpected layout behavior.
Based on coding guidelines, the max width of the testing window is 340px.
🔎 Proposed fix
- grid.style.width = '350px';
+ grid.style.width = '340px';You may also need to adjust the comment on line 27 accordingly:
- // Should fit 3 columns (350/100 = 3), wrapping to rows
+ // Should fit 3 columns (340/100 = 3), wrapping to rows📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('creates tracks with auto-fill and fixed size', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(auto-fill, 100px)'; | |
| grid.style.gridTemplateRows = '80px'; | |
| grid.style.width = '350px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f5f5f5'; | |
| for (let i = 0; i < 5; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726', '#BA68C8', '#9575CD'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Should fit 3 columns (350/100 = 3), wrapping to rows | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| expect(items[1].getBoundingClientRect().width).toBe(100); | |
| expect(items[2].getBoundingClientRect().width).toBe(100); | |
| grid.remove(); | |
| }); | |
| it('creates tracks with auto-fill and fixed size', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(auto-fill, 100px)'; | |
| grid.style.gridTemplateRows = '80px'; | |
| grid.style.width = '340px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f5f5f5'; | |
| for (let i = 0; i < 5; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726', '#BA68C8', '#9575CD'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Should fit 3 columns (340/100 = 3), wrapping to rows | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| expect(items[1].getBoundingClientRect().width).toBe(100); | |
| expect(items[2].getBoundingClientRect().width).toBe(100); | |
| grid.remove(); | |
| }); |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/advanced-sizing/auto-fill.ts around
lines 2 to 33, the test sets grid.style.width = '350px' which exceeds the
documented maximum testing window width (340px); change the width to '340px' and
update the inline comment on line ~27 to reflect the max window width (e.g.,
"Should fit 3 columns (340/100 = 3)"), ensuring assertions remain valid.
| it('uses auto-fill with minmax', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = 'repeat(auto-fill, minmax(100px, 1fr))'; | ||
| grid.style.gridTemplateRows = '80px'; | ||
| grid.style.width = '350px'; | ||
| grid.style.gap = '0'; | ||
| grid.style.backgroundColor = '#f3e5f5'; | ||
|
|
||
| for (let i = 0; i < 5; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = ['#BA68C8', '#AB47BC', '#9C27B0', '#8E24AA', '#7B1FA2'][i]; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
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||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
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||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // Should fit 3 columns at minimum (350/100 = 3) | ||
| items.slice(0, 3).forEach(item => { | ||
| expect(item.getBoundingClientRect().width).toBeGreaterThanOrEqual(100); | ||
| }); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Grid width exceeds maximum testing window width.
Line 73 sets the grid width to 350px, which exceeds the documented maximum testing window width of 340px. This may cause clipping or unexpected layout behavior.
Based on coding guidelines, the max width of the testing window is 340px.
🔎 Proposed fix
- grid.style.width = '350px';
+ grid.style.width = '340px';You may also need to adjust the comment on line 93 accordingly:
- // Should fit 3 columns at minimum (350/100 = 3)
+ // Should fit 3 columns at minimum (340/100 = 3)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('uses auto-fill with minmax', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(auto-fill, minmax(100px, 1fr))'; | |
| grid.style.gridTemplateRows = '80px'; | |
| grid.style.width = '350px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f3e5f5'; | |
| for (let i = 0; i < 5; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#BA68C8', '#AB47BC', '#9C27B0', '#8E24AA', '#7B1FA2'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Should fit 3 columns at minimum (350/100 = 3) | |
| items.slice(0, 3).forEach(item => { | |
| expect(item.getBoundingClientRect().width).toBeGreaterThanOrEqual(100); | |
| }); | |
| grid.remove(); | |
| }); | |
| it('uses auto-fill with minmax', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(auto-fill, minmax(100px, 1fr))'; | |
| grid.style.gridTemplateRows = '80px'; | |
| grid.style.width = '340px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f3e5f5'; | |
| for (let i = 0; i < 5; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#BA68C8', '#AB47BC', '#9C27B0', '#8E24AA', '#7B1FA2'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Should fit 3 columns at minimum (340/100 = 3) | |
| items.slice(0, 3).forEach(item => { | |
| expect(item.getBoundingClientRect().width).toBeGreaterThanOrEqual(100); | |
| }); | |
| grid.remove(); | |
| }); |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/advanced-sizing/auto-fill.ts around
lines 68 to 99, the test sets grid.style.width = '350px' which exceeds the
testing window max width (340px) and can cause clipping; change the grid width
to '340px' (or a smaller value ≤340px) and update any related inline comment
(around line 93) that states the expected number of columns or math based on 350
to reflect the new width (e.g., 340/100 = 3) so assertions remain accurate.
| // Item should be pushed to the right edge | ||
| const itemRight = item.getBoundingClientRect().right; | ||
| const gridRight = grid.getBoundingClientRect().right; | ||
| expect(Math.abs(itemRight - gridRight)).toBe(180); | ||
|
|
There was a problem hiding this comment.
Fix incorrect assertion for asymmetric auto margin test.
The test verifies that marginLeft: 'auto' pushes the item to the right edge of the grid. However, the assertion expects the difference between itemRight and gridRight to be 180px, which is incorrect. If the item is pushed to the right edge, itemRight should equal gridRight, so the difference should be 0.
The grid width is 180px, so the assertion appears to be confusing the grid width with the expected margin behavior.
🔎 Proposed fix
// Item should be pushed to the right edge
const itemRight = item.getBoundingClientRect().right;
const gridRight = grid.getBoundingClientRect().right;
- expect(Math.abs(itemRight - gridRight)).toBe(180);
+ expect(Math.abs(itemRight - gridRight)).toBeLessThan(1);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| // Item should be pushed to the right edge | |
| const itemRight = item.getBoundingClientRect().right; | |
| const gridRight = grid.getBoundingClientRect().right; | |
| expect(Math.abs(itemRight - gridRight)).toBe(180); | |
| // Item should be pushed to the right edge | |
| const itemRight = item.getBoundingClientRect().right; | |
| const gridRight = grid.getBoundingClientRect().right; | |
| expect(Math.abs(itemRight - gridRight)).toBeLessThan(1); | |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/alignment/auto-margins.ts around lines
285-289, the assertion incorrectly expects Math.abs(itemRight - gridRight)
toBe(180) even though marginLeft: 'auto' should push the item to the grid's
right edge; change the assertion to expect 0 (e.g., expect(Math.abs(itemRight -
gridRight)).toBe(0)) so the test verifies the itemRight equals gridRight.
| it('aligns content with start', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = 'repeat(3, 80px)'; | ||
| grid.style.gridTemplateRows = '60px'; | ||
| grid.style.width = '350px'; | ||
| grid.style.justifyContent = 'start'; | ||
| grid.style.gap = '0'; | ||
| grid.style.backgroundColor = '#f5f5f5'; | ||
|
|
||
| for (let i = 0; i < 3; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726'][i]; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
|
||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
|
||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // Items should start at left edge | ||
| expect(items[0].getBoundingClientRect().left).toBe(grid.getBoundingClientRect().left); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Reduce grid width to comply with testing window constraints.
Line 7 sets the grid width to 350px, which exceeds the maximum testing window width of 340px per the coding guidelines.
Based on coding guidelines.
🔎 Proposed fix
const grid = document.createElement('div');
grid.style.display = 'grid';
grid.style.gridTemplateColumns = 'repeat(3, 80px)';
grid.style.gridTemplateRows = '60px';
- grid.style.width = '350px';
+ grid.style.width = '300px';
grid.style.justifyContent = 'start';
grid.style.gap = '0';📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('aligns content with start', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(3, 80px)'; | |
| grid.style.gridTemplateRows = '60px'; | |
| grid.style.width = '350px'; | |
| grid.style.justifyContent = 'start'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f5f5f5'; | |
| for (let i = 0; i < 3; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Items should start at left edge | |
| expect(items[0].getBoundingClientRect().left).toBe(grid.getBoundingClientRect().left); | |
| grid.remove(); | |
| }); | |
| it('aligns content with start', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = 'repeat(3, 80px)'; | |
| grid.style.gridTemplateRows = '60px'; | |
| grid.style.width = '300px'; | |
| grid.style.justifyContent = 'start'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#f5f5f5'; | |
| for (let i = 0; i < 3; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#42A5F5', '#66BB6A', '#FFA726'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // Items should start at left edge | |
| expect(items[0].getBoundingClientRect().left).toBe(grid.getBoundingClientRect().left); | |
| grid.remove(); | |
| }); |
🤖 Prompt for AI Agents
integration_tests/specs/css/css-grid/alignment/justify-content.ts lines 2-32:
the test sets grid.style.width = '350px', which exceeds the test window max of
340px; change the width to 340px (or any value <= 340px) and re-run the test to
ensure the left-edge alignment assertion still holds; also scan nearby tests in
this file for any other hard-coded widths >340px and adjust similarly.
| const item4 = document.createElement('div'); | ||
| item4.id = 'grid-opacity-D'; | ||
| item4.textContent = 'D'; | ||
| item4.style.gridArea = '2 / 3 / 4 / 5'; | ||
| grid.appendChild(item4); |
There was a problem hiding this comment.
Item D extends beyond the explicit grid, creating an implicit column.
Line 101 places Item D from column 3 to column 5 (gridArea: '2 / 3 / 4 / 5'), but line 75 only defines 4 explicit columns. This creates an implicit column 5 with auto sizing, which may lead to unpredictable layout behavior and potentially affect the hit testing assertions.
Since the test focuses on opacity stacking contexts rather than implicit grid behavior, consider adjusting Item D to stay within the explicit grid.
🔎 Proposed fix
- item4.style.gridArea = '2 / 3 / 4 / 5';
+ item4.style.gridArea = '2 / 3 / 4 / 4';Alternatively, if the implicit column is intentional for testing purposes, add a comment explaining the rationale and consider setting grid-auto-columns for predictable sizing:
grid.style.gridTemplateRows = 'repeat(3, 60px)';
grid.style.gap = '0';
+ grid.style.gridAutoColumns = '70px'; // Explicit sizing for implicit columns📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const item4 = document.createElement('div'); | |
| item4.id = 'grid-opacity-D'; | |
| item4.textContent = 'D'; | |
| item4.style.gridArea = '2 / 3 / 4 / 5'; | |
| grid.appendChild(item4); | |
| const item4 = document.createElement('div'); | |
| item4.id = 'grid-opacity-D'; | |
| item4.textContent = 'D'; | |
| item4.style.gridArea = '2 / 3 / 4 / 4'; | |
| grid.appendChild(item4); |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/hit-test.ts around lines 98 to 102, Item
D uses gridArea '2 / 3 / 4 / 5' which creates an implicit 5th column beyond the
four explicit columns; change Item D so its end column falls within the explicit
grid (e.g., end at column 4) to avoid creating an implicit column, or if the
implicit column is intentional, add a clarifying comment and set an explicit
grid-auto-columns value to ensure predictable sizing for the test.
| it('uses fr units in grid-auto-columns', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = '100px'; | ||
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | ||
| grid.style.gridAutoFlow = 'column'; | ||
| grid.style.gridAutoColumns = '1fr'; | ||
| grid.style.width = '400px'; | ||
| grid.style.gap = '0'; | ||
| grid.style.backgroundColor = '#e8f5e9'; | ||
|
|
||
| for (let i = 0; i < 6; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = ['#66BB6A', '#4CAF50', '#43A047', '#388E3C', '#2E7D32', '#1B5E20'][i]; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
|
||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
|
||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // First column: 100px explicit | ||
| expect(items[0].getBoundingClientRect().width).toBe(100); | ||
| // Remaining space (300px) divided by 2 implicit columns = 150px each | ||
| expect(items[2].getBoundingClientRect().width).toBe(150); | ||
| expect(items[4].getBoundingClientRect().width).toBe(150); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Width exceeds maximum testing window constraint.
Line 152 sets grid.style.width = '400px', which violates the 340px maximum width constraint for the testing window.
🔎 Recommended fix
- grid.style.width = '400px';
+ grid.style.width = '340px';Update assertions on Lines 174-176:
- // Remaining space (300px) divided by 2 implicit columns = 150px each
- expect(items[2].getBoundingClientRect().width).toBe(150);
- expect(items[4].getBoundingClientRect().width).toBe(150);
+ // Remaining space (240px) divided by 2 implicit columns = 120px each
+ expect(items[2].getBoundingClientRect().width).toBe(120);
+ expect(items[4].getBoundingClientRect().width).toBe(120);Based on learnings, the max width of testing window is 340px.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('uses fr units in grid-auto-columns', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '1fr'; | |
| grid.style.width = '400px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#e8f5e9'; | |
| for (let i = 0; i < 6; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#66BB6A', '#4CAF50', '#43A047', '#388E3C', '#2E7D32', '#1B5E20'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px explicit | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Remaining space (300px) divided by 2 implicit columns = 150px each | |
| expect(items[2].getBoundingClientRect().width).toBe(150); | |
| expect(items[4].getBoundingClientRect().width).toBe(150); | |
| grid.remove(); | |
| }); | |
| it('uses fr units in grid-auto-columns', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '1fr'; | |
| grid.style.width = '340px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#e8f5e9'; | |
| for (let i = 0; i < 6; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#66BB6A', '#4CAF50', '#43A047', '#388E3C', '#2E7D32', '#1B5E20'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px explicit | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Remaining space (240px) divided by 2 implicit columns = 120px each | |
| expect(items[2].getBoundingClientRect().width).toBe(120); | |
| expect(items[4].getBoundingClientRect().width).toBe(120); | |
| grid.remove(); | |
| }); |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/implicit-grids/auto-columns-extended.ts
around lines 145 to 179, the test sets grid.style.width = '400px' which exceeds
the 340px test-window max; change the grid width to '340px' (or any <=340px) and
update the related assertions: the explicit column remains 100px and the
remaining space becomes 240px, so each implicit column should be 120px — update
the expect checks on the last two assertions to toBe(120) and adjust the inline
comment to reflect "Remaining space (240px) divided by 2 implicit columns =
120px each."
| it('uses percentage values in grid-auto-columns', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = '100px'; | ||
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | ||
| grid.style.gridAutoFlow = 'column'; | ||
| grid.style.gridAutoColumns = '25%'; | ||
| grid.style.width = '400px'; | ||
| grid.style.gap = '0'; | ||
| grid.style.backgroundColor = '#e0f2f1'; | ||
|
|
||
| for (let i = 0; i < 4; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = ['#4DB6AC', '#26A69A', '#009688', '#00897B'][i]; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
|
||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
|
||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // First column: 100px | ||
| expect(items[0].getBoundingClientRect().width).toBe(100); | ||
| // Second column: 25% of 400px = 100px | ||
| expect(items[2].getBoundingClientRect().width).toBe(100); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Width exceeds maximum testing window constraint.
Line 223 sets grid.style.width = '400px', which violates the 340px maximum width constraint for the testing window.
🔎 Recommended fix
- grid.style.width = '400px';
+ grid.style.width = '340px';Update assertions on Lines 244-246:
- // Second column: 25% of 400px = 100px
- expect(items[2].getBoundingClientRect().width).toBe(100);
+ // Second column: 25% of 340px = 85px
+ expect(items[2].getBoundingClientRect().width).toBe(85);Based on learnings, the max width of testing window is 340px.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('uses percentage values in grid-auto-columns', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '25%'; | |
| grid.style.width = '400px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#e0f2f1'; | |
| for (let i = 0; i < 4; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#4DB6AC', '#26A69A', '#009688', '#00897B'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Second column: 25% of 400px = 100px | |
| expect(items[2].getBoundingClientRect().width).toBe(100); | |
| grid.remove(); | |
| }); | |
| it('uses percentage values in grid-auto-columns', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 70px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '25%'; | |
| grid.style.width = '340px'; | |
| grid.style.gap = '0'; | |
| grid.style.backgroundColor = '#e0f2f1'; | |
| for (let i = 0; i < 4; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = ['#4DB6AC', '#26A69A', '#009688', '#00897B'][i]; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Second column: 25% of 340px = 85px | |
| expect(items[2].getBoundingClientRect().width).toBe(85); | |
| grid.remove(); | |
| }); |
🤖 Prompt for AI Agents
In integration_tests/specs/css/css-grid/implicit-grids/auto-columns-extended.ts
around lines 216 to 249, the test sets grid.style.width = '400px' which exceeds
the 340px testing window max; change the width to '340px' (or any value ≤340px)
and update the related assertion expecting the auto column percentage: 25% of
340px = 85px, so change the expect on the auto column from 100 to 85 (and adjust
the inline comment accordingly).
| it('calculates fr units with gaps in implicit grid', async () => { | ||
| const grid = document.createElement('div'); | ||
| grid.style.display = 'grid'; | ||
| grid.style.gridTemplateColumns = '100px'; | ||
| grid.style.gridTemplateRows = 'repeat(2, 60px)'; | ||
| grid.style.gridAutoFlow = 'column'; | ||
| grid.style.gridAutoColumns = '1fr'; | ||
| grid.style.width = '450px'; | ||
| grid.style.columnGap = '10px'; | ||
| grid.style.rowGap = '5px'; | ||
| grid.style.backgroundColor = '#e8f5e9'; | ||
|
|
||
| for (let i = 0; i < 6; i++) { | ||
| const item = document.createElement('div'); | ||
| item.textContent = `${i + 1}`; | ||
| item.style.backgroundColor = `hsl(${120 + i * 15}, 60%, 55%)`; | ||
| item.style.display = 'flex'; | ||
| item.style.alignItems = 'center'; | ||
| item.style.justifyContent = 'center'; | ||
| item.style.color = 'white'; | ||
| grid.appendChild(item); | ||
| } | ||
|
|
||
| document.body.appendChild(grid); | ||
| await waitForFrame(); | ||
| await snapshot(); | ||
|
|
||
| const items = Array.from(grid.children) as HTMLElement[]; | ||
| // First column: 100px | ||
| expect(items[0].getBoundingClientRect().width).toBe(100); | ||
| // Remaining: 450 - 100 - 10 - 10 = 330px for 2 columns = 165px each | ||
| expect(items[2].getBoundingClientRect().width).toBe(165); | ||
| expect(items[4].getBoundingClientRect().width).toBe(165); | ||
|
|
||
| grid.remove(); | ||
| }); |
There was a problem hiding this comment.
Width exceeds maximum testing window constraint.
Line 155 sets grid.style.width = '450px', which violates the 340px maximum width constraint for the testing window. This may cause rendering issues or unexpected test behavior.
🔎 Recommended fix
Reduce the grid width to fit within the 340px constraint while maintaining the test's intent:
- grid.style.width = '450px';
+ grid.style.width = '340px';Then update the assertion on Line 178 accordingly:
- // Remaining: 450 - 100 - 10 - 10 = 330px for 2 columns = 165px each
- expect(items[2].getBoundingClientRect().width).toBe(165);
- expect(items[4].getBoundingClientRect().width).toBe(165);
+ // Remaining: 340 - 100 - 10 - 10 = 220px for 2 columns = 110px each
+ expect(items[2].getBoundingClientRect().width).toBe(110);
+ expect(items[4].getBoundingClientRect().width).toBe(110);Based on learnings, the max width of testing window is 340px.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| it('calculates fr units with gaps in implicit grid', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 60px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '1fr'; | |
| grid.style.width = '450px'; | |
| grid.style.columnGap = '10px'; | |
| grid.style.rowGap = '5px'; | |
| grid.style.backgroundColor = '#e8f5e9'; | |
| for (let i = 0; i < 6; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = `hsl(${120 + i * 15}, 60%, 55%)`; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Remaining: 450 - 100 - 10 - 10 = 330px for 2 columns = 165px each | |
| expect(items[2].getBoundingClientRect().width).toBe(165); | |
| expect(items[4].getBoundingClientRect().width).toBe(165); | |
| grid.remove(); | |
| }); | |
| it('calculates fr units with gaps in implicit grid', async () => { | |
| const grid = document.createElement('div'); | |
| grid.style.display = 'grid'; | |
| grid.style.gridTemplateColumns = '100px'; | |
| grid.style.gridTemplateRows = 'repeat(2, 60px)'; | |
| grid.style.gridAutoFlow = 'column'; | |
| grid.style.gridAutoColumns = '1fr'; | |
| grid.style.width = '340px'; | |
| grid.style.columnGap = '10px'; | |
| grid.style.rowGap = '5px'; | |
| grid.style.backgroundColor = '#e8f5e9'; | |
| for (let i = 0; i < 6; i++) { | |
| const item = document.createElement('div'); | |
| item.textContent = `${i + 1}`; | |
| item.style.backgroundColor = `hsl(${120 + i * 15}, 60%, 55%)`; | |
| item.style.display = 'flex'; | |
| item.style.alignItems = 'center'; | |
| item.style.justifyContent = 'center'; | |
| item.style.color = 'white'; | |
| grid.appendChild(item); | |
| } | |
| document.body.appendChild(grid); | |
| await waitForFrame(); | |
| await snapshot(); | |
| const items = Array.from(grid.children) as HTMLElement[]; | |
| // First column: 100px | |
| expect(items[0].getBoundingClientRect().width).toBe(100); | |
| // Remaining: 340 - 100 - 10 - 10 = 220px for 2 columns = 110px each | |
| expect(items[2].getBoundingClientRect().width).toBe(110); | |
| expect(items[4].getBoundingClientRect().width).toBe(110); | |
| grid.remove(); | |
| }); |
| @override | ||
| bool hitTestChildren(BoxHitTestResult result, {Offset? position}) { | ||
| return defaultHitTestChildren(result, position: position); | ||
| if (position == null) return false; | ||
| return super.hitTestChildren(result, position: position); | ||
| } |
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# First, let's locate and examine the RenderLayoutBox base class to understand its hitTestChildren signature
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Fix hitTestChildren signature in RenderGridLayout to match RenderLayoutBox
RenderGridLayout extends RenderLayoutBox, which defines hitTestChildren with a required Offset position parameter. The current override uses {Offset? position}, creating a signature mismatch that violates the Liskov Substitution Principle.
Change to:
@override
bool hitTestChildren(BoxHitTestResult result, {required Offset position}) {
return super.hitTestChildren(result, position: position);
}Also audit RenderFlexLayout in flex.dart, which has the same signature mismatch issue. RenderFlowLayout already correctly uses the required parameter.
🤖 Prompt for AI Agents
In webf/lib/src/rendering/grid.dart around lines 3566 to 3570 the override for
hitTestChildren uses an optional parameter signature ({Offset? position}) which
conflicts with RenderLayoutBox's required Offset position; change the override
to use the required named parameter ({required Offset position}) and remove the
null check/early return so it simply forwards position to super.hitTestChildren.
Also audit webf/lib/src/rendering/flex.dart for the same incorrect signature in
RenderFlexLayout and update it the same way to match RenderLayoutBox.
Summary:
Summary by CodeRabbit
New Features
Tests
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