OracleService

src/OracleService/OracleService.cs

@@ -422,7 +422,7 @@ private void AddResponseTxSign(StoreView snapshot, ulong requestId, ECPoint orac
             }
         }
 
-        private static byte[] Filter(string input, string filterArgs)
+        public static byte[] Filter(string input, string filterArgs)
         {
             if (string.IsNullOrEmpty(filterArgs))
                 return Utility.StrictUTF8.GetBytes(input);

tests/Neo.Plugins.OracleService.Tests/UT_OracleService.cs

@@ -16,6 +16,46 @@ public void TestSetup()
             TestBlockchain.InitializeMockNeoSystem();
         }
 
+        [TestMethod]
+        public void TestFilter()
+        {
+            var json = @"{
+  'Stores': [
+    'Lambton Quay',
+    'Willis Street'
+  ],
+  'Manufacturers': [
+    {
+      'Name': 'Acme Co',
+      'Products': [
+        {
+          'Name': 'Anvil',
+          'Price': 50
+        }
+      ]
+    },
+    {
+      'Name': 'Contoso',
+      'Products': [
+        {
+          'Name': 'Elbow Grease',
+          'Price': 99.95
+        },
+        {
+          'Name': 'Headlight Fluid',
+          'Price': 4
+        }
+      ]
+    }
+  ]
+}";
+
+            Assert.AreEqual(@"[""Acme Co""]", Utility.StrictUTF8.GetString(OracleService.Filter(json, "Manufacturers[0].Name")));
+            Assert.AreEqual("[50]", Utility.StrictUTF8.GetString(OracleService.Filter(json, "Manufacturers[0].Products[0].Price")));
+            Assert.AreEqual(@"[""Elbow Grease""]", Utility.StrictUTF8.GetString(OracleService.Filter(json, "Manufacturers[1].Products[0].Name")));
+            Assert.AreEqual(@"[{""Name"":""Elbow Grease"",""Price"":99.95}]", Utility.StrictUTF8.GetString(OracleService.Filter(json, "Manufacturers[1].Products[0]")));
+        }
+
         [TestMethod]
         public void TestCreateOracleResponseTx()
         {