restored Contains test.

added ContainsPath test
supressed CS0618 warning - memeber is obsolete

Author: Gennadii Shestakov

FaunaDB.Client.Test/ClientTest.cs

@@ -892,6 +892,10 @@ [Test] public async Task TestEvalContainsExpressions()
             var favoritesObj = Obj("favorites", foodsObj);
 
             // Deprecated
+#pragma warning disable CS0618 // Type or member is obsolete
+            Assert.AreEqual(BooleanV.True,
+                await client.Query(Contains(Path("favorites", "foods"), favoritesObj)));
+#pragma warning restore CS0618 // Type or member is obsolete
 
             Assert.AreEqual(BooleanV.True,
                 await client.Query(ContainsPath(Path("favorites", "foods"), favoritesObj)));

FaunaDB.Client.Test/SerializationTest.cs

@@ -755,6 +755,15 @@ [Test] public void TestEquals()
 
         [Test] public void TestContains()
         {
+#pragma warning disable CS0618 // Type or member is obsolete
+            AssertJsonEqual(Contains(Arr("favorites", "foods"), Obj("favorites", Obj("foods", Arr("crunchings", "munchings", "lunchings")))),
+                "{\"contains\":[\"favorites\",\"foods\"],\"in\":{\"object\":{\"favorites\":{\"object\":{\"foods\":[\"crunchings\",\"munchings\",\"lunchings\"]}}}}}");
+#pragma warning restore CS0618 // Type or member is obsolete
+        }
+
+        [Test]
+        public void TestContainsPath()
+        {
             AssertJsonEqual(ContainsPath(Arr("favorites", "foods"), Obj("favorites", Obj("foods", Arr("crunchings", "munchings", "lunchings")))),
                 "{\"contains_path\":[\"favorites\",\"foods\"],\"in\":{\"object\":{\"favorites\":{\"object\":{\"foods\":[\"crunchings\",\"munchings\",\"lunchings\"]}}}}}");
         }