add label visibility tests

test/decorator.html

@@ -39,18 +39,31 @@
   <paper-input-decorator id="decorator2" label="input">
   </paper-input-decorator>
 
+  <br>
+
+  <paper-input-decorator id="decorator3" label="input" floatingLabel>
+    <input id="input3" is="core-input">
+  </paper-input-decorator>
+
   <script>
 
     var d1 = document.getElementById('decorator1');
     var i1 = document.getElementById('input1');
     var d2 = document.getElementById('decorator2');
+    var d3 = document.getElementById('decorator3');
+    var i3 = document.getElementById('input3');
+
+    function reset(d, i) {
+      d.labelVisible = null;
+      i.value = null;
+      d.updateLabelVisibility(i.value);
+    }
 
     suite('basic', function() {
 
       teardown(function() {
-        d1.labelVisible = null;
-        i1.value = null;
-        d1.updateLabelVisibility(i1.value);
+        reset(d1, i1);
+        reset(d3, i3);
       });
 
       test('label is invisible if value is not null', function() {
@@ -60,7 +73,21 @@
         assert.ok(!d1._labelVisible);
       });
 
-      // set label = integer 0
+      test('label is invisible if floating label and focused', function(done) {
+        assert.ok(d3._labelVisible);
+        d3.focusAction();
+        asyncPlatformFlush(function() {
+          assert.ok(!d3._labelVisible);
+          done();
+        });
+      });
+
+      test('label is invisible if value = 0', function() {
+        assert.ok(d1._labelVisible);
+        i1.value = 0;
+        d1.updateLabelVisibility(i1.value);
+        assert.ok(!d1._labelVisible);
+      });
 
       test('labelVisible overrides label visibility', function() {
         d1.labelVisible = false;