public void TestGetPrivateData() { ChaincodeStub stub = new ChaincodeStub("myc", "txId", handler.Object, new List <ByteString>(), null); byte[] value = new byte[] { 0x10, 0x20, 0x30 }; handler.Setup(a => a.GetStateAsync("myc", "txId", "testcoll", "key", token)).ReturnsAsync(ByteString.CopyFrom(value)); CollectionAssert.AreEqual(stub.GetPrivateData("testcoll", "key"), value); try { stub.GetPrivateData(null, "key"); Assert.Fail("Null collection check fails"); } catch (ArgumentException) { //ignored } try { stub.GetPrivateData("", "key"); Assert.Fail("Empty collection check fails"); } catch (ArgumentException) { //ignored } }