extend dynamic-import tests

addresses #3814
Polymer · Oct 30, 2016 · 977a93a · 977a93a
1 parent 4be2e44
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diff --git a/test/unit/dynamic-import.html b/test/unit/dynamic-import.html
@@ -65,6 +65,42 @@
         }, null, true);
       });
 
+      test('trigger load event of the second request of a resource when loading was not complete yet', function(done) {
+        Polymer.Base.importHref(url);
+        Polymer.Base.importHref(url, function() {
+          done();
+        });
+      });
+
+      test('trigger load event of the second request of a resource when loading was already completed', function(done) {
+        var url = 'dynamic-imports/dynamic-lazy.html';
+        var imprt = Polymer.Base.importHref(url);
+
+        var onLoad = function() {
+          document.removeEventListener('load', onLoad);
+          Polymer.Base.importHref(url, function() {
+            done();
+          });
+        }
+
+        imprt.addEventListener('load', onLoad);        
+      });
+
+      test('triggers the callback only once even when the element was requested again later', function(done) {
+        var count = 0;
+        Polymer.Base.importHref(url, function() {
+          count++;
+          if(count === 1) {
+            Polymer.Base.importHref(url, function() {
+              setTimeout(function() {
+                assert.equal(count, 1, 'the first callback should only be called once');
+                done();
+              }, 0);
+            });
+          }
+        });
+      });
+
     });
 
   });

diff --git a/test/unit/dynamic-imports/dynamic-lazy.html b/test/unit/dynamic-imports/dynamic-lazy.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<!--
+@license
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+
+<link rel="import" href="../../../polymer.html">
+
+<dom-module id="dynamic-lazy">
+  <template>   
+    <span id="content">dynamic-lazy</span>
+  </template>
+</dom-module>
+
+<script>
+  Polymer({
+    is: 'dynamic-lazy'
+  });
+</script>
diff --git a/test/unit/dynamic-imports/dynamic-once.html b/test/unit/dynamic-imports/dynamic-once.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<!--
+@license
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+
+<link rel="import" href="../../../polymer.html">
+
+<dom-module id="dynamic-once">
+  <template>   
+    <span id="content">dynamic-once</span>
+  </template>
+</dom-module>
+
+<script>
+  Polymer({
+    is: 'dynamic-once'
+  });
+</script>