issue with closures messing up contains (#277)

Author: slorello89

src/Redis.OM/Common/ExpressionParserUtilities.cs

@@ -648,8 +648,16 @@ private static string TranslateContainsStandardQuerySyntax(MethodCallExpression
                 literal = GetOperandStringForQueryArgs(propertyExpression);
                 if (!literal.StartsWith("@"))
                 {
-                    propertyExpression = (MemberExpression)exp.Arguments.First();
-                    valuesExpression = (MemberExpression)exp.Arguments.Last();
+                    if (exp.Arguments.Count == 1 && exp.Object != null)
+                    {
+                        propertyExpression = (MemberExpression)exp.Object;
+                        valuesExpression = (MemberExpression)exp.Arguments.Single();
+                    }
+                    else
+                    {
+                        propertyExpression = (MemberExpression)exp.Arguments.First();
+                        valuesExpression = (MemberExpression)exp.Arguments.Last();
+                    }
                 }
                 else if (propertyExpression == valuesExpression)
                 {

test/Redis.OM.Unit.Tests/RediSearchTests/SearchTests.cs

@@ -2610,6 +2610,23 @@ public void SearchWithEmptyAny()
             Assert.True(any);
         }
 
+        [Fact]
+        public void TestContainsFromLocal()
+        {
+            _mock.Setup(x => x.Execute(It.IsAny<string>(), It.IsAny<string[]>()))
+                .Returns(_mockReply);
+            var collection = new RedisCollection<Person>(_mock.Object);
+            var steve = "steve";
+            collection.Where(x => x.NickNamesList.Contains(steve)).ToList();
+            _mock.Verify(x => x.Execute(
+                "FT.SEARCH",
+                "person-idx",
+                "(@NickNamesList:{steve})",
+                "LIMIT",
+                "0",
+                "100"));
+        }
+
         [Fact]
         public void SearchGuidFieldContains()
         {
@@ -2633,6 +2650,26 @@ public void SearchGuidFieldContains()
                 "100"));
         }
 
+        [Fact]
+        public void TestContainsFromProperty()
+        {
+            _mock.Setup(x => x.Execute(It.IsAny<string>(), It.IsAny<string[]>()))
+                .Returns(_mockReply);
+            var collection = new RedisCollection<Person>(_mock.Object);
+            var steve = new Person
+            {
+                Name = "steve"
+            };
+            collection.Where(x => x.NickNamesList.Contains(steve.Name)).ToList();
+            _mock.Verify(x => x.Execute(
+                "FT.SEARCH",
+                "person-idx",
+                "(@NickNamesList:{steve})",
+                "LIMIT",
+                "0",
+                "100"));
+        }
+
         [Fact]
         public void SearchUlidFieldContains()
         {