[Webkit-unassigned] [Bug 183424] New: Layout Test media/video-zoom-controls.html is flaky

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Mar 7 17:08:44 PST 2018 

https://bugs.webkit.org/show_bug.cgi?id=183424

            Bug ID: 183424
           Summary: Layout Test media/video-zoom-controls.html is flaky
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jlewis3 at apple.com
                CC: dino at apple.com, graouts at apple.com,
                    jer.noble at apple.com, ryanhaddad at apple.com

The following layout test is flaky on macOS WK2

media/video-zoom-controls.html

Probable cause:

Has been flaky for longer than the dashboard goes back. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2Fvideo-zoom-controls.html


https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r229378%20(3305)/results.html


Diff:
--- /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/media/video-zoom-controls-expected.txt
+++ /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/media/video-zoom-controls-actual.txt
@@ -6,47 +6,97 @@
       RenderBlock {P} at (0,0) size 776x28
         RenderText {#text} at (0,0) size 278x28
           text run at (0,0) width 278: "Zoomed video with controls."
+layer at (57,85) size 240x180
+  RenderVideo {VIDEO} at (45,73) size 240x180
 layer at (57,85) size 240x180 isolatesBlending
-  RenderVideo {VIDEO} at (45,73) size 240x180
+  RenderBlock (relative positioned) {DIV} at (0,0) size 240x180
 layer at (57,85) size 240x180
-  RenderFlexibleBox {DIV} at (0,0) size 240x180
-layer at (57,198) size 240x67
-  RenderFlexibleBox {DIV} at (0,112) size 240x68
-layer at (57,198) size 240x68 isolatesBlending
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68
-layer at (57,198) size 240x68
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68 [bgcolor=#1E1E1E73]
-layer at (57,198) size 240x68 blendMode: lighten
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68 [bgcolor=#292929]
-layer at (69,235) size 18x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (12,37) size 18x23 [color=#FFFFFF]
-layer at (111,234) size 24x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (54,36) size 24x24 [color=#FFFFFF]
-layer at (221,228) size 21x38
-  RenderFlexibleBox {DIV} at (163,30) size 22x38
-layer at (221,235) size 21x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (0,7) size 21x23 [color=#FFFFFF]
-layer at (266,235) size 21x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (208,37) size 22x23 [color=#FFFFFF]
+  RenderBlock (positioned) {DIV} at (0,0) size 240x180
+layer at (66,94) size 71x47 isolatesBlending
+  RenderBlock (positioned) {DIV} at (9,9) size 71x47
+layer at (66,94) size 71x47
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47
+layer at (66,94) size 71x47
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47 [bgcolor=#0000008C]
+layer at (66,94) size 71x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47 [bgcolor=#FFFFFF23]
+layer at (66,94) size 71x47
+  RenderFlexibleBox {DIV} at (0,0) size 71x47
+layer at (90,94) size 23x47
+  RenderButton {BUTTON} at (24,0) size 23x47
+    RenderFlexibleBox at (0,12) size 23x23
+layer at (90,106) size 23x23 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (0,0) size 23x23 [bgcolor=#FFFFFF8C]
+layer at (207,94) size 81x47 isolatesBlending
+  RenderBlock (positioned) {DIV} at (150,9) size 81x47
+layer at (207,94) size 81x47
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47
+layer at (207,94) size 81x47
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47 [bgcolor=#0000008C]
+layer at (207,94) size 81x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47 [bgcolor=#FFFFFF23]
+layer at (207,94) size 81x47
+  RenderFlexibleBox {DIV} at (0,0) size 81x47
+layer at (231,94) size 33x47
+  RenderButton {BUTTON} at (24,0) size 33x47
+    RenderFlexibleBox at (0,12) size 33x23
+layer at (231,106) size 33x23 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (0,0) size 33x23 [bgcolor=#FFFFFF8C]
+layer at (66,210) size 66x46
+  RenderButton {BUTTON} at (9,124) size 66x47
+    RenderFlexibleBox at (0,13) size 66x20
+layer at (66,210) size 66x47
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47
+layer at (66,210) size 66x47
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47 [bgcolor=#0000008C]
+layer at (66,210) size 66x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47 [bgcolor=#FFFFFF23]
+layer at (91,223) size 16x20 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (24,0) size 18x20 [bgcolor=#FFFFFFBF]
+layer at (57,310) size 240x180
+  RenderVideo {VIDEO} at (45,298) size 240x180
 layer at (57,310) size 240x180 isolatesBlending
-  RenderVideo {VIDEO} at (45,298) size 240x180
-layer at (57,310) size 240x180
-  RenderFlexibleBox {DIV} at (0,0) size 240x180
-layer at (57,423) size 240x67
-  RenderFlexibleBox {DIV} at (0,112) size 240x68
-layer at (57,423) size 240x68 isolatesBlending
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68
-layer at (57,423) size 240x68
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68 [bgcolor=#1E1E1E73]
-layer at (57,423) size 240x68 blendMode: lighten
-  RenderBlock (positioned) {DIV} at (0,0) size 240x68 [bgcolor=#292929]
-layer at (69,460) size 18x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (12,37) size 18x23 [color=#FFFFFF]
-layer at (111,459) size 24x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (54,36) size 24x24 [color=#FFFFFF]
-layer at (221,453) size 21x38
-  RenderFlexibleBox {DIV} at (163,30) size 22x38
-layer at (221,460) size 21x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (0,7) size 21x23 [color=#FFFFFF]
-layer at (266,460) size 21x22 blendMode: plus-lighter
-  RenderButton {BUTTON} at (208,37) size 22x23 [color=#FFFFFF]
+  RenderBlock (relative positioned) {DIV} at (0,0) size 240x180
+layer at (57,310) size 302x263
+  RenderBlock (positioned) {DIV} at (0,0) size 302x263
+layer at (66,319) size 71x47 isolatesBlending
+  RenderBlock (positioned) {DIV} at (9,9) size 71x47
+layer at (66,319) size 71x47
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47
+layer at (66,319) size 71x47
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47 [bgcolor=#0000008C]
+layer at (66,319) size 71x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 71x47 [bgcolor=#FFFFFF23]
+layer at (66,319) size 71x47
+  RenderFlexibleBox {DIV} at (0,0) size 71x47
+layer at (90,319) size 23x47
+  RenderButton {BUTTON} at (24,0) size 23x47
+    RenderFlexibleBox at (0,12) size 23x23
+layer at (90,331) size 23x23 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (0,0) size 23x23 [bgcolor=#FFFFFF8C]
+layer at (269,319) size 81x47 isolatesBlending
+  RenderBlock (positioned) {DIV} at (211,9) size 82x47
+layer at (269,319) size 81x47
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47
+layer at (269,319) size 81x47
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47 [bgcolor=#0000008C]
+layer at (269,319) size 81x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 81x47 [bgcolor=#FFFFFF23]
+layer at (269,319) size 81x47
+  RenderFlexibleBox {DIV} at (0,0) size 81x47
+layer at (293,319) size 33x47
+  RenderButton {BUTTON} at (24,0) size 33x47
+    RenderFlexibleBox at (0,12) size 33x23
+layer at (293,331) size 33x23 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (0,0) size 33x23 [bgcolor=#FFFFFF8C]
+layer at (66,517) size 66x47
+  RenderButton {BUTTON} at (9,207) size 66x47
+    RenderFlexibleBox at (0,13) size 66x20
+layer at (66,517) size 66x47
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47
+layer at (66,517) size 66x47
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47 [bgcolor=#0000008C]
+layer at (66,517) size 66x47 blendMode: lighten
+  RenderBlock (positioned) {DIV} at (0,0) size 66x47 [bgcolor=#FFFFFF23]
+layer at (91,531) size 16x20 blendMode: plus-lighter
+  RenderBlock {PICTURE} at (24,0) size 18x20 [bgcolor=#FFFFFFBF]

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