Merge pull request #159 from JakeGinnivan/NullableEnumIncorrectlyReportedAsNotUsed

Fixes #158

Author: JakeGinnivan

TestStack.BDDfy.Tests/UnusedExampleValueScenario.cs

@@ -12,9 +12,40 @@ public class UnusedExampleValueScenario
         [Test]
         public void WhenExampleIsNotUsedItThrows()
         {
-            var ex = Should.Throw<UnusedExampleException>(() => this.Given("Foo").WithExamples(new ExampleTable("Example 1") { 1 }).BDDfy());
+            var ex = Should.Throw<UnusedExampleException>(() => 
+                this.Given("Foo")
+                .WithExamples(new ExampleTable("Example 1") { 1 }).BDDfy());
 
             ex.Message.ShouldBe("Example Column 'Example 1' is unused, all examples should be consumed by the test (have you misspelt a field or property?)");
         }
+
+        [Test]
+        public void NullableEnumIsUsedProperly()
+        {
+            SomeEnum? nullableEnum = null;
+            string anotherExample = null;
+
+            this.Given(_ => GivenANullableEnumExample(nullableEnum))
+                .Then(_ => AnotherValueIsChanged(anotherExample))
+                .WithExamples(new ExampleTable("Nullable Enum", "Another Example")
+                {
+                    {SomeEnum.Value, string.Empty},
+                    {null, string.Empty}
+                })
+                .BDDfy();
+        }
+
+        private void AnotherValueIsChanged(string anotherExample)
+        {
+        }
+
+        private void GivenANullableEnumExample(SomeEnum? nullableEnum)
+        {
+        }
+
+        public enum SomeEnum
+        {
+            Value
+        }
     }
 }

TestStack.BDDfy/Scanners/StepScanners/Examples/ExampleValue.cs

@@ -39,6 +39,8 @@ public object GetValue(Type targetType)
                     var valueAsString = string.IsNullOrEmpty(stringValue) ? "<null>" : string.Format("\"{0}\"", _underlyingValue);
                     throw new ArgumentException(string.Format("Cannot convert {0} to {1} (Column: '{2}', Row: {3})", valueAsString, targetType.Name, Header, Row));
                 }
+
+                ValueHasBeenUsed = true;
                 return null;
             }