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Testing Utilization Report Generation Workflows in CAT

This test suite validates the UtilizationReportBuilder functionality in the CAT monitoring system, focusing on report generation across different time intervals. It ensures proper initialization and report building for hourly, daily, weekly and monthly utilization reports.

Test Coverage Overview

The test suite provides comprehensive coverage of the UtilizationReportBuilder’s temporal reporting capabilities.

Key functionality tested includes:

Hourly report generation with specific timestamp formats
Daily utilization report building
Weekly report aggregation and processing
Monthly report compilation

Integration points focus on HostinfoService initialization and proper date format handling.

Implementation Analysis

The testing approach uses JUnit framework with ComponentTestCase as the base class for dependency injection and component lookup.

Key patterns include:

Component lookup pattern for accessing builder and service instances
Date format standardization using SimpleDateFormat
Service initialization before report generation
Consistent testing structure across different time intervals

Technical Details

Testing tools and configuration:

JUnit test framework
ComponentTestCase for dependency management
SimpleDateFormat for date parsing
Constants class for report type definitions
HostinfoService for system initialization
UtilizationReportBuilder as the primary test target

Best Practices Demonstrated

The test suite exemplifies several testing best practices in Java development.

Notable practices include:

Proper separation of test cases by time interval
Consistent initialization patterns
Clear test method naming conventions
Resource cleanup through inheritance
Standardized date format handling

dianping/cat

cat-home/src/test/java/com/dianping/cat/report/task/utilization/UtilizationBuilderTest.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.utilization;

import java.text.SimpleDateFormat;

import org.junit.Test;
import org.unidal.lookup.ComponentTestCase;

import com.dianping.cat.Constants;
import com.dianping.cat.report.page.statistics.task.utilization.UtilizationReportBuilder;
import com.dianping.cat.service.HostinfoService;

public class UtilizationBuilderTest extends ComponentTestCase {

	@Test
	public void testHourlyReport() throws Exception {
		UtilizationReportBuilder builder = lookup(UtilizationReportBuilder.class);
		HostinfoService hostinfoService = lookup(HostinfoService.class);

		hostinfoService.initialize();
		builder.buildHourlyTask(Constants.REPORT_UTILIZATION, Constants.CAT,
								new SimpleDateFormat("yyyyMMddHH").parse("2013082617"));
	}

	@Test
	public void testDailyReport() throws Exception {
		UtilizationReportBuilder builder = lookup(UtilizationReportBuilder.class);
		HostinfoService hostinfoService = lookup(HostinfoService.class);

		hostinfoService.initialize();
		builder.buildDailyTask(Constants.REPORT_UTILIZATION, Constants.CAT,
								new SimpleDateFormat("yyyyMMdd").parse("20130826"));
	}

	@Test
	public void testWeeklyReport() throws Exception {
		UtilizationReportBuilder builder = lookup(UtilizationReportBuilder.class);
		HostinfoService hostinfoService = lookup(HostinfoService.class);

		hostinfoService.initialize();
		builder.buildWeeklyTask(Constants.REPORT_UTILIZATION, Constants.CAT,
								new SimpleDateFormat("yyyyMMdd").parse("20130717"));
	}

	@Test
	public void testMonthlyReport() throws Exception {
		UtilizationReportBuilder builder = lookup(UtilizationReportBuilder.class);
		HostinfoService hostinfoService = lookup(HostinfoService.class);

		hostinfoService.initialize();
		builder.buildMonthlyTask(Constants.REPORT_UTILIZATION, Constants.CAT,
								new SimpleDateFormat("yyyyMMdd").parse("20130701"));
	}

}