1 files changed, 100 insertions, 0 deletions
diff --git a/testing/web-platform/meta/layout-instability/idlharness.html.ini b/testing/web-platform/meta/layout-instability/idlharness.html.ini
new file mode 100644
index 0000000000..1c39c316ff
--- /dev/null
+++ b/testing/web-platform/meta/layout-instability/idlharness.html.ini
@@ -0,0 +1,100 @@
+[idlharness.html]
+  [LayoutShiftAttribution interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [LayoutShift interface: layoutShift must inherit property "lastInputTime" with the proper type]
+    expected: FAIL
+
+  [LayoutShift interface: attribute lastInputTime]
+    expected: FAIL
+
+  [LayoutShift interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [LayoutShift interface object name]
+    expected: FAIL
+
+  [LayoutShift interface: attribute value]
+    expected: FAIL
+
+  [LayoutShift interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [Stringification of layoutShift]
+    expected: FAIL
+
+  [LayoutShiftAttribution must be primary interface of layoutShiftAttribution]
+    expected: FAIL
+
+  [LayoutShift interface object length]
+    expected: FAIL
+
+  [LayoutShift interface: attribute hadRecentInput]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface object length]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: attribute node]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface object name]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: existence and properties of interface object]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: attribute currentRect]
+    expected: FAIL
+
+  [LayoutShift must be primary interface of layoutShift]
+    expected: FAIL
+
+  [LayoutShift interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [LayoutShift interface: layoutShift must inherit property "hadRecentInput" with the proper type]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [LayoutShift interface: attribute sources]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: layoutShiftAttribution must inherit property "currentRect" with the proper type]
+    expected: FAIL
+
+  [LayoutShift interface: default toJSON operation on layoutShift]
+    expected: FAIL
+
+  [LayoutShift interface: layoutShift must inherit property "sources" with the proper type]
+    expected: FAIL
+
+  [LayoutShift interface: layoutShift must inherit property "toJSON()" with the proper type]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: layoutShiftAttribution must inherit property "node" with the proper type]
+    expected: FAIL
+
+  [LayoutShift interface: layoutShift must inherit property "value" with the proper type]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: layoutShiftAttribution must inherit property "previousRect" with the proper type]
+    expected: FAIL
+
+  [LayoutShift interface: existence and properties of interface object]
+    expected: FAIL
+
+  [LayoutShift interface: operation toJSON()]
+    expected: FAIL
+
+  [LayoutShiftAttribution interface: attribute previousRect]
+    expected: FAIL
+
+  [Stringification of layoutShiftAttribution]
+    expected: FAIL
+