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Testing JAR Report Generation Components in dianping/cat

This test suite validates the JAR report building functionality in the Cat monitoring system, focusing on hourly task generation and timestamp handling. The test ensures proper report generation for JAR-related metrics within the Cat monitoring framework.

Test Coverage Overview

The test coverage focuses on the core JAR report building functionality within the Cat monitoring system.

Validates hourly task generation for JAR reports
Tests timestamp parsing and handling
Verifies proper report initialization with specific parameters
Ensures correct component lookup and instantiation

Implementation Analysis

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

Uses lookup mechanism for component instantiation
Implements date parsing for temporal validation
Leverages Constants.REPORT_JAR for report type specification
Employs SimpleDateFormat for timestamp handling

Technical Details

JUnit test framework integration
ComponentTestCase for dependency management
SimpleDateFormat for date parsing
TaskBuilder interface implementation
JarReportBuilder component configuration

Best Practices Demonstrated

The test exemplifies clean and efficient testing practices for component-based architectures.

Clear separation of concerns in test structure
Proper exception handling for date parsing
Effective use of dependency injection
Consistent naming conventions
Focused test scope with single responsibility

dianping/cat

cat-home/src/test/java/com/dianping/cat/report/task/jar/JarReportBuilderTest.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.
 */
package com.dianping.cat.report.task.jar;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

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

import com.dianping.cat.Constants;
import com.dianping.cat.report.page.statistics.task.jar.JarReportBuilder;
import com.dianping.cat.report.task.TaskBuilder;

public class JarReportBuilderTest extends ComponentTestCase {

	@Test
	public void test() throws ParseException {
		JarReportBuilder builder = (JarReportBuilder) lookup(TaskBuilder.class, JarReportBuilder.ID);

		Date period = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse("2016-04-28 10:00:00");
		builder.buildHourlyTask(Constants.REPORT_JAR, "cat", period);
	}
}