made contains case insensitive

Author: Jamess-Lucass

src/GoatQuery/src/Evaluator/FilterEvaluator.cs

@@ -64,9 +64,9 @@ public static Result<Expression> Evaluate(QueryExpression expression, ParameterE
                         case Keywords.Contains:
                             var identifier = (Identifier)exp.Left;
 
-                            var method = identifier.Value.GetType().GetMethod("Contains", new[] { value?.Value.GetType() });
+                            var method = identifier.Value.GetType().GetMethod("Contains", new[] { value?.Value.GetType(), typeof(StringComparison) });
 
-                            return Expression.Call(property, method, value);
+                            return Expression.Call(property, method, value, Expression.Constant(StringComparison.OrdinalIgnoreCase));
                         case Keywords.Lt:
                             return Expression.LessThan(property, value);
                         case Keywords.Lte:

src/GoatQuery/tests/Filter/FilterTest.cs

@@ -61,12 +61,12 @@ public static IEnumerable<object[]> Parameters()
 
         yield return new object[] {
             "firstName contains 'a'",
-            new[] { _users["Jane"], _users["Harry"] }
+            new[] { _users["Jane"], _users["Apple"], _users["Harry"] }
         };
 
         yield return new object[] {
             "Age ne 1 and firstName contains 'a'",
-            Array.Empty<User>()
+            new[] { _users["Apple"] }
         };
 
         yield return new object[] {

src/GoatQuery/tests/Top/TopTest.cs

@@ -70,7 +70,7 @@ public void Test_TopWithMaxTop(int top, int expectedCount)
     [InlineData(5)]
     [InlineData(100)]
     [InlineData(100_000)]
-    public void Test_TopWithMaxTopThrowsException(int top)
+    public void Test_TopWithMaxTopReturnsError(int top)
     {
         var users = new List<User>{
             new User { Age = 1, Firstname = "Jane" },