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-rw-r--r--testing/web-platform/tests/css-backgrounds/background-size-cover-003-ref.html21
-rw-r--r--testing/web-platform/tests/css-backgrounds/background-size-cover-003.html38
-rw-r--r--testing/web-platform/tests/html/rendering/replaced-elements/attributes-for-embedded-content-and-images/img-aspect-ratio.html60
3 files changed, 119 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css-backgrounds/background-size-cover-003-ref.html b/testing/web-platform/tests/css-backgrounds/background-size-cover-003-ref.html
new file mode 100644
index 000000000..bd965cfec
--- /dev/null
+++ b/testing/web-platform/tests/css-backgrounds/background-size-cover-003-ref.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<style>
+body { margin: 0 }
+.first {
+ width: 100px;
+ height: 50px;
+ background: lime;
+}
+.space {
+ height: 50px;
+}
+.second {
+ width: 100px;
+ height: 100px;
+ background: lime;
+}
+</style>
+<div class="first"></div>
+<div class="space"></div>
+<div class="second"></div>
diff --git a/testing/web-platform/tests/css-backgrounds/background-size-cover-003.html b/testing/web-platform/tests/css-backgrounds/background-size-cover-003.html
new file mode 100644
index 000000000..4d2b6b125
--- /dev/null
+++ b/testing/web-platform/tests/css-backgrounds/background-size-cover-003.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<title>CSS Test: background-size: cover with zero-sized background positioning area.</title>
+<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#valdef-background-size-cover">
+<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/4049">
+<link rel="help" href=" https://bugzilla.mozilla.org/show_bug.cgi?id=1559094">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="match" href="background-size-cover-003-ref.html">
+<style>
+body { margin: 0 }
+div {
+ background-size: cover;
+ background-repeat: no-repeat;
+ background-position: top left;
+ background-origin: content-box;
+ background-image: url(/images/green-100x50.png);
+}
+#test1 {
+ height: 0;
+ width: 100px;
+ padding-bottom: 100px;
+}
+
+#test2 {
+ height: 100px;
+ width: 0;
+ padding-right: 100px;
+}
+#test3 {
+ height: 0;
+ width: 0;
+ padding-right: 100px;
+ padding-bottom: 100px;
+}
+</style>
+<div id="test1"></div>
+<div id="test2"></div>
+<div id="test3"></div>
diff --git a/testing/web-platform/tests/html/rendering/replaced-elements/attributes-for-embedded-content-and-images/img-aspect-ratio.html b/testing/web-platform/tests/html/rendering/replaced-elements/attributes-for-embedded-content-and-images/img-aspect-ratio.html
new file mode 100644
index 000000000..9ae87be9c
--- /dev/null
+++ b/testing/web-platform/tests/html/rendering/replaced-elements/attributes-for-embedded-content-and-images/img-aspect-ratio.html
@@ -0,0 +1,60 @@
+<!doctype html>
+<title>Image width and height attributes are used to infer aspect-ratio</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+ img {
+ width: 100%;
+ max-width: 100px;
+ height: auto;
+ }
+</style>
+<img src="/images/green.png">
+<img src="/images/green.png" width=100 height=125>
+<img src="" width=100 height=125>
+<img src="error.png" width=100 height=125>
+<img src="error.png">
+<script>
+let t = async_test("Image width and height attributes are used to infer aspect-ratio");
+function assert_ratio(img, expected) {
+ let epsilon = 0.001;
+ assert_approx_equals(parseFloat(getComputedStyle(img).width, 10) / parseFloat(getComputedStyle(img).height, 10), expected, epsilon);
+}
+// Create and append a new image and immediately check the ratio.
+// This is not racy because the spec requires the user agent to queue a task:
+// https://html.spec.whatwg.org/multipage/images.html#updating-the-image-data
+t.step(function() {
+ var img = new Image();
+ img.width = 250;
+ img.height = 100;
+ img.src = "/images/blue.png";
+ document.body.appendChild(img);
+ assert_ratio(img, 2.5);
+
+ img = new Image();
+ img.setAttribute("width", "0.8");
+ img.setAttribute("height", "0.2");
+ img.src = "/images/blue.png";
+ document.body.appendChild(img);
+ // Decimals are apparently ignored?
+ assert_equals(getComputedStyle(img).height, "0px");
+
+ img = new Image();
+ img.setAttribute("width", "50%");
+ img.setAttribute("height", "25%");
+ img.src = "/images/blue.png";
+ document.body.appendChild(img);
+ // Percentages should be ignored.
+ assert_equals(getComputedStyle(img).height, "0px");
+});
+
+onload = t.step_func_done(function() {
+ let images = document.querySelectorAll("img");
+ assert_ratio(images[0], 2.0); // Loaded image's aspect ratio, at least by default, overrides width / height ratio.
+ assert_ratio(images[1], 2.0); // 2.0 is the original aspect ratio of green.png
+ assert_equals(getComputedStyle(images[2]).height, "0px"); // aspect-ratio doesn't override intrinsic size of images that don't have any src.
+ assert_equals(getComputedStyle(images[3]).height, "125px"); // what intrinsic size?
+ assert_equals(getComputedStyle(images[4]).height, "100px"); // what aspect ratio?
+ assert_ratio(images[5], 133/106); // The original aspect ratio of blue.png
+});
+</script>