Index: LayoutTests/fullscreen/rendering/ua-style-override.html |
diff --git a/LayoutTests/fullscreen/rendering/ua-style-override.html b/LayoutTests/fullscreen/rendering/ua-style-override.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..a7b133adba9740ea6dc1babb78def0e4a8d48345 |
--- /dev/null |
+++ b/LayoutTests/fullscreen/rendering/ua-style-override.html |
@@ -0,0 +1,59 @@ |
+<!DOCTYPE html> |
+<title>Fullscreen UA style sheet cannot be overriden by author style</title> |
+<script src="../../resources/testharness.js"></script> |
+<script src="../../resources/testharnessreport.js"></script> |
+<script src="../trusted-event.js"></script> |
+<style> |
+#test { |
+ /* Override everything which is !important in the Fullscreen UA style sheet. */ |
+ position: relative !important; |
+ top: auto !important; |
+ right: auto !important; |
+ bottom: auto !important; |
+ left: auto !important; |
+ margin: 10px !important; |
+ box-sizing: content-box !important; |
+ min-width: 50% !important; |
+ max-width: 50% !important; |
+ min-height: 50% !important; |
+ max-height: 50% !important; |
+ width: 50% !important; |
+ height: 50% !important; |
+ object-fit: none !important; |
+ transform: translate(0, 0) !important; |
+} |
+</style> |
+<div id="log"></div> |
+<div id="test"></div> |
+<script> |
+async_test(function() |
+{ |
+ var div = document.getElementById("test"); |
+ |
+ // Sanity-check that the overriden style initially applies. |
+ assert_equals(getComputedStyle(div).position, "relative"); |
+ |
+ document.addEventListener("fullscreenchange", this.step_func_done(function() |
+ { |
+ var style = getComputedStyle(div); |
+ // All properties should now match the Fullscreen UA style sheet. |
+ assert_equals(style.position, "fixed"); |
+ assert_equals(style.top, "0px"); |
+ assert_equals(style.right, "0px"); |
+ assert_equals(style.bottom, "0px"); |
+ assert_equals(style.left, "0px"); |
+ assert_equals(style.margin, "0px"); |
+ assert_equals(style.boxSizing, "border-box"); |
+ assert_equals(style.minWidth, "0px"); |
+ assert_equals(style.maxWidth, "none"); |
+ assert_equals(style.minHeight, "0px"); |
+ assert_equals(style.maxHeight, "none"); |
+ assert_equals(style.width, window.innerWidth + "px"); |
+ assert_equals(style.height, window.innerHeight + "px"); |
+ assert_equals(style.objectFit, "contain"); |
+ assert_equals(style.transform, "none"); |
+ })); |
+ |
+ trusted_request(div); |
+}); |
+</script> |