diff --git a/test/unit/array-selector.html b/test/unit/array-selector.html
index 31ee18f2d3..9b20250f00 100644
--- a/test/unit/array-selector.html
+++ b/test/unit/array-selector.html
@@ -38,46 +38,82 @@
     var el = singleConfigured;
     // Nothing selected
     assert.strictEqual(el.selected, null);
+    assert.isFalse(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Select 0
     el.select(el.items[0]);
     assert.strictEqual(el.selected, el.items[0]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Re-select 0
     el.select(el.items[0]);
     assert.strictEqual(el.selected, el.items[0]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Select 2
     el.select(el.items[2]);
     assert.strictEqual(el.selected, el.items[2]);
+    assert.isFalse(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isTrue(el.isSelected(el.items[2]));
     // Toggle 2
     el.toggle = true;
     el.select(el.items[2]);
     assert.strictEqual(el.selected, null);
+    assert.isFalse(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Toggle 2
     el.toggle = true;
     el.select(el.items[2]);
     assert.strictEqual(el.selected, el.items[2]);
+    assert.isFalse(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isTrue(el.isSelected(el.items[2]));
   });
 
   test('multiple selection', function() {
     var el = multiConfigured;
     // Nothing selected
     assert.sameMembers(el.selected, []);
+    assert.isFalse(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Select 0
     el.select(el.items[0]);
     assert.sameMembers(el.selected, [el.items[0]]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Re-select 0
     el.select(el.items[0]);
     assert.sameMembers(el.selected, [el.items[0]]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Select 2
     el.select(el.items[2]);
     assert.sameMembers(el.selected, [el.items[0], el.items[2]]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isTrue(el.isSelected(el.items[2]));
     // Toggle 2
     el.toggle = true;
     el.select(el.items[2]);
     assert.sameMembers(el.selected, [el.items[0]]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isFalse(el.isSelected(el.items[2]));
     // Toggle 2
     el.toggle = true;
     el.select(el.items[2]);
     assert.sameMembers(el.selected, [el.items[0], el.items[2]]);
+    assert.isTrue(el.isSelected(el.items[0]));
+    assert.isFalse(el.isSelected(el.items[1]));
+    assert.isTrue(el.isSelected(el.items[2]));
   });
 
   test('bound defaults', function() {