Added DomNode.IsAttributeSet(AttributeInfo)

Closes #15
SonyWWS · Sep 13, 2014 · 13bc703 · 13bc703
1 parent 710bd4e
commit 13bc703
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diff --git a/Framework/Atf.Core/Dom/DomNode.cs b/Framework/Atf.Core/Dom/DomNode.cs
@@ -362,6 +362,17 @@ public string GetId()
             return id;
         }
 
+        /// <summary>
+        /// Gets whether or not the attribute has been set, even if it was set to its default value.</summary>
+        /// <param name="attributeInfo">Attribute metadata</param>
+        /// <returns>True iff the attribute has been set to anything other than null</returns>
+        /// <remarks>Setting an attribute to null is special, and makes the attribute look like it
+        /// was never set.</remarks>
+        public bool IsAttributeSet(AttributeInfo attributeInfo)
+        {
+            return GetLocalAttribute(attributeInfo) != null;
+        }
+
         /// <summary>
         /// Gets whether or not the attribute's value (like by calling GetAttribute) is equal to
         /// the default value.</summary>

diff --git a/Test/UnitTests/Sce.Atf/Dom/TestDomNode.cs b/Test/UnitTests/Sce.Atf/Dom/TestDomNode.cs
@@ -352,20 +352,24 @@ public void TestGetAttribute()
 
             Assert.True(test.IsAttributeDefault(info));
             Assert.Null(test.GetLocalAttribute(info));
+            Assert.False(test.IsAttributeSet(info));
 
             test.SetAttribute(info, 2);
             Assert.AreEqual(test.GetAttribute(info), 2);
             Assert.AreEqual(test.GetLocalAttribute(info), 2);
             Assert.False(test.IsAttributeDefault(info));
+            Assert.True(test.IsAttributeSet(info));
 
             test.SetAttribute(info, null);
             Assert.True(test.IsAttributeDefault(info));
             Assert.Null(test.GetLocalAttribute(info));
+            Assert.False(test.IsAttributeSet(info));
 
             test.SetAttribute(info, 0);
             Assert.AreEqual(test.GetAttribute(info), 0);
             Assert.True(test.IsAttributeDefault(info));
             Assert.AreEqual(test.GetLocalAttribute(info), 0);
+            Assert.True(test.IsAttributeSet(info));
         }
 
         [Test]
@@ -376,13 +380,16 @@ public void TestSetAttribute()
             type.Define(info);
             DomNode test = new DomNode(type);
 
+            Assert.False(test.IsAttributeSet(info));
             test.SetAttribute(info, 2);
             Assert.AreEqual(test.GetAttribute(info), 2);
             Assert.AreEqual(test.GetLocalAttribute(info), 2);
+            Assert.True(test.IsAttributeSet(info));
 
             test.SetAttribute(info, null);
             Assert.True(test.IsAttributeDefault(info));
             Assert.Null(test.GetLocalAttribute(info));
+            Assert.False(test.IsAttributeSet(info));
         }
 
         [Test]