| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.server.protocol.v0_10; |
| |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import org.apache.qpid.server.transport.ProtocolEngine; |
| import org.apache.qpid.test.utils.QpidTestCase; |
| |
| public class WindowCreditManagerTest extends QpidTestCase |
| { |
| private WindowCreditManager _creditManager; |
| private ProtocolEngine _protocolEngine; |
| |
| protected void setUp() throws Exception |
| { |
| super.setUp(); |
| |
| _protocolEngine = mock(ProtocolEngine.class); |
| when(_protocolEngine.isTransportBlockedForWriting()).thenReturn(false); |
| |
| _creditManager = new WindowCreditManager(0l, 0l, _protocolEngine); |
| } |
| |
| /** |
| * Tests that after the credit limit is cleared (e.g. from a message.stop command), credit is |
| * restored (e.g. from completed MessageTransfer) without increasing the available credit, and |
| * more credit is added, that the 'used' count is correct and the proper values for bytes |
| * and message credit are returned along with appropriate 'hasCredit' results (QPID-3592). |
| */ |
| public void testRestoreCreditDecrementsUsedCountAfterCreditClear() |
| { |
| assertEquals("unexpected credit value", 0, _creditManager.getMessageCredit()); |
| assertEquals("unexpected credit value", 0, _creditManager.getBytesCredit()); |
| |
| //give some message credit |
| _creditManager.addCredit(1, 0); |
| assertFalse("Manager should not 'haveCredit' due to having 0 bytes credit", _creditManager.hasCredit()); |
| assertEquals("unexpected credit value", 1, _creditManager.getMessageCredit()); |
| assertEquals("unexpected credit value", 0, _creditManager.getBytesCredit()); |
| |
| //give some bytes credit |
| _creditManager.addCredit(0, 1); |
| assertTrue("Manager should 'haveCredit'", _creditManager.hasCredit()); |
| assertEquals("unexpected credit value", 1, _creditManager.getMessageCredit()); |
| assertEquals("unexpected credit value", 1, _creditManager.getBytesCredit()); |
| |
| //use all the credit |
| _creditManager.useCreditForMessage(1); |
| assertEquals("unexpected credit value", 0, _creditManager.getBytesCredit()); |
| assertEquals("unexpected credit value", 0, _creditManager.getMessageCredit()); |
| assertFalse("Manager should not 'haveCredit'", _creditManager.hasCredit()); |
| |
| //clear credit out (eg from a message.stop command) |
| _creditManager.clearCredit(); |
| assertEquals("unexpected credit value", 0, _creditManager.getBytesCredit()); |
| assertEquals("unexpected credit value", 0, _creditManager.getMessageCredit()); |
| assertFalse("Manager should not 'haveCredit'", _creditManager.hasCredit()); |
| |
| //restore credit (e.g the original message transfer command got completed) |
| //this should not increase credit, because it is now limited to 0 |
| _creditManager.restoreCredit(1, 1); |
| assertEquals("unexpected credit value", 0, _creditManager.getBytesCredit()); |
| assertEquals("unexpected credit value", 0, _creditManager.getMessageCredit()); |
| assertFalse("Manager should not 'haveCredit'", _creditManager.hasCredit()); |
| |
| //give more credit to open the window again |
| _creditManager.addCredit(1, 1); |
| assertEquals("unexpected credit value", 1, _creditManager.getBytesCredit()); |
| assertEquals("unexpected credit value", 1, _creditManager.getMessageCredit()); |
| assertTrue("Manager should 'haveCredit'", _creditManager.hasCredit()); |
| } |
| } |