1 files changed, 91 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/adoption.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/adoption.html
new file mode 100644
index 0000000000..15e02bcf51
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/adoption.html
@@ -0,0 +1,91 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Adopting an image updates the image data</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+
+<!-- tests -->
+
+<div id="adoptTest1"></div>
+<picture id="adoptTest2">
+<source srcset="/images/green-2x2.png">
+</picture>
+
+<script>
+function resolve(url) {
+  if (url === "") {
+    return url;
+  }
+  var a = document.createElement('a');
+  a.href = url;
+  return a.href;
+}
+
+function t(desc, data, expect) {
+  async_test(function(t) {
+    var d = (new DOMParser()).parseFromString(data, 'text/html');
+    var i = d.querySelector('img');
+    i.onerror = this.unreached_func('got unexpected error event');
+    i.onload = this.step_func_done(function() {
+      assert_equals(i.currentSrc, resolve(expect));
+    });
+    var n = d.querySelector('[adopt-node]');
+    document.adoptNode(n);
+  }, desc);
+}
+
+onload = function() {
+
+  t('img (src only)',
+    '<img src="/images/green-1x1.png" adopt-node>',
+    '/images/green-1x1.png');
+
+  t('img (src only), parent is picture',
+    '<picture adopt-node><img src="/images/green-1x1.png"></picture>',
+    '/images/green-1x1.png');
+
+  t('img (src only), previous sibling is source',
+    '<picture adopt-node><source srcset="/images/green-1x1.png"><img src="/images/green-2x2.png"></picture>',
+    '/images/green-1x1.png');
+
+  t('img (srcset 1 cand)',
+    '<img srcset="/images/green-1x1.png" adopt-node>',
+    '/images/green-1x1.png');
+
+  t('img (srcset 1 cand), parent is picture',
+    '<picture adopt-node><img srcset="/images/green-1x1.png"></picture>',
+    '/images/green-1x1.png');
+
+  t('img (srcset 1 cand), previous sibling is source',
+    '<picture adopt-node><source srcset="/images/green-1x1.png"><img srcset="/images/green-2x2.png"></picture>',
+    '/images/green-1x1.png');
+
+  async_test(function(t) {
+    var d = (new DOMParser()).parseFromString('<template><img src="/images/green-1x1.png"></template>', 'text/html');
+    var i = d.querySelector('template').content.querySelector('img').cloneNode(1);
+    i.onerror = this.unreached_func('got unexpected error event');
+    i.onload = this.step_func_done(function() {
+      assert_equals(i.currentSrc, resolve('/images/green-1x1.png'));
+    });
+
+    document.getElementById('adoptTest1').appendChild(i);
+  }, 'adopt a cloned img in template');
+
+  async_test(function(t) {
+    var preload = new Image();
+    preload.src = '/images/green-1x1.png?' + Math.random();
+    preload.onload = t.step_func(function() {
+      var d = (new DOMParser()).parseFromString('<img src="' + preload.src + '">', 'text/html');
+      var i = d.querySelector('img');
+      i.onerror = this.unreached_func('got unexpected error event');
+      i.onload = this.step_func_done(function() {
+        assert_equals(i.currentSrc, resolve("/images/green-2x2.png"));
+      });
+
+      var p = document.getElementById('adoptTest2');
+      p.appendChild(i);
+    });
+  }, 'adoption is from appendChild');
+};
+</script>