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Testing Database Capacity Management in CAT Monitoring System

This test suite validates database capacity management functionality in the CAT monitoring system, focusing on the performance and execution of capacity update operations. The tests ensure proper handling of database resource allocation and monitoring tasks.

Test Coverage Overview

The test suite covers database capacity update operations with focus on execution duration monitoring.

Tests the HourlyCapacityUpdater component functionality
Validates database capacity update operations
Measures task execution time performance
Verifies component lookup and initialization

Implementation Analysis

The testing approach utilizes ComponentTestCase as the base class for dependency injection and component management.

The implementation employs the following patterns:

Component lookup pattern for accessing CapacityUpdater instances
System time measurement for performance tracking
Exception handling for database operations

Technical Details

Testing infrastructure includes:

JUnit framework integration
Unidal DAL for database access
ComponentTestCase for dependency injection
System.currentTimeMillis() for performance measurement
DalException handling for database operations

Best Practices Demonstrated

The test demonstrates several quality testing practices for database-related operations.

Proper exception handling and propagation
Performance measurement implementation
Component-based testing architecture
Clear test method naming conventions
Structured test case organization

dianping/cat

cat-home/src/test/java/com/dianping/cat/report/task/DatabaseCapacityTest.java

            
/*
 * Copyright (c) 2011-2018, Meituan Dianping. All Rights Reserved.
 *
 * 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.
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package com.dianping.cat.report.task;

import org.unidal.dal.jdbc.DalException;
import org.unidal.lookup.ComponentTestCase;

import com.dianping.cat.report.page.overload.task.CapacityUpdater;
import com.dianping.cat.report.page.overload.task.HourlyCapacityUpdater;

public class DatabaseCapacityTest extends ComponentTestCase {

	// @Test
	public void testTaskDuration() throws DalException {
		CapacityUpdater updater = lookup(CapacityUpdater.class, HourlyCapacityUpdater.ID);
		long currentMills = System.currentTimeMillis();

		updater.updateDBCapacity();
		System.out.println("Done: " + Long.toString(System.currentTimeMillis() - currentMills));
	}
}