Add regression TestGetArrayLength()

OpenSim/Region/OptionalModules/Scripting/JsonStore/Tests/JsonStoreScriptModuleTests.cs

@@ -398,6 +398,39 @@ namespace OpenSim.Region.OptionalModules.Scripting.JsonStore.Tests
             }
         }
 
+        [Test]
+        public void TestGetArrayLength()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            UUID storeId = (UUID)InvokeOp("JsonCreateStore", "{ 'Hello' : { 'World' : [ 'one', 2 ] } }");
+
+            {
+                int result = (int)InvokeOp("JsonGetArrayLength", storeId, "Hello.World");
+                Assert.That(result, Is.EqualTo(2));
+            }
+
+            // Test path which is not an array
+            {
+                int result = (int)InvokeOp("JsonGetArrayLength", storeId, "Hello");
+                Assert.That(result, Is.EqualTo(-1));
+            }
+
+            // Test fake path
+            {
+                int result = (int)InvokeOp("JsonGetArrayLength", storeId, "foo");
+                Assert.That(result, Is.EqualTo(-1));
+            }
+
+            // Test fake store
+            {
+                UUID fakeStoreId = TestHelpers.ParseTail(0x500);
+                int result = (int)InvokeOp("JsonGetArrayLength", fakeStoreId, "Hello.World");
+                Assert.That(result, Is.EqualTo(-1));
+            }
+        }
+
         [Test]
         public void TestJsonGetPathType()
         {