null propagation: few tests

riganti · Apr 5, 2020 · 4c5b30b · 4c5b30b
1 parent 20aac34
commit 4c5b30b
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Showing 2 changed files with 25 additions and 0 deletions.
diff --git a/src/DotVVM.Framework.Tests.Common/Binding/BindingCompilationTests.cs b/src/DotVVM.Framework.Tests.Common/Binding/BindingCompilationTests.cs
@@ -574,6 +574,7 @@ class TestViewModel
 
         public long[] LongArray => new long[] { 1, 2, long.MaxValue };
         public TestViewModel2[] VmArray => new TestViewModel2[] { new TestViewModel2() };
+        public int[] IntArray { get; set; }
 
         public string SetStringProp(string a, int b)
         {

diff --git a/src/DotVVM.Framework.Tests.Common/Binding/NullPropagationTests.cs b/src/DotVVM.Framework.Tests.Common/Binding/NullPropagationTests.cs
@@ -245,6 +245,30 @@ public void MethodArgument_Null_RefType()
             Assert.IsNull(EvalExpression<TestViewModel>(v => Identity(v), null));
             Assert.IsNull(EvalExpression<TestViewModel>(v => Identity(v.LongArray), null));
         }
+
+        [TestMethod]
+        public void Operator()
+        {
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.LongArray[0] + 1, null));
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.LongArray[0] + v.TestViewModel2.MyProperty, new TestViewModel()));
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.TestViewModel2B.ChildObject.SomeString.Length + v.TestViewModel2.MyProperty, new TestViewModel()));
+            Assert.Equals(2, EvalExpression<TestViewModel>(v => v.LongArray[0] + 1, new TestViewModel()));
+        }
+
+        [TestMethod]
+        public void StringConcat()
+        {
+            Assert.Equals("abc", EvalExpression<TestViewModel>(v => v.StringProp + "abc", null));
+        }
+
+        [TestMethod]
+        public void Indexer()
+        {
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.IntArray[0] + 1, null));
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.IntArray[0] + 1, new TestViewModel { IntArray = null }));
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.TestViewModel2.Collection[0].StringValue.Length + 5, new TestViewModel { IntArray = null }));
+            Assert.IsNull(EvalExpression<TestViewModel>(v => v.TestViewModel2.Collection[0].StringValue.Length + 5, new TestViewModel { IntArray = null }));
+        }
     }
 
     public static class EnumerableExtensions