Cobertura example source code file (ComplexityCalculatorTest.java)

This example Cobertura source code file (ComplexityCalculatorTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Cobertura tags/keywords

classdata, classdata, complexitycalculator, complexitycalculator, exception, filefinder, filefixture, nullpointerexception, nullpointerexception, packagedata, projectdata, sourcefiledata, sourcefiledata, testcase

The Cobertura ComplexityCalculatorTest.java source code

/*
 * Cobertura - http://cobertura.sourceforge.net/
 *
 * Copyright (C) 2005 Grzegorz Lukasik
 * 
 * Cobertura is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * Cobertura is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cobertura; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */
package net.sourceforge.cobertura.reporting;

import net.sourceforge.cobertura.coveragedata.ClassData;
import net.sourceforge.cobertura.coveragedata.PackageData;
import net.sourceforge.cobertura.coveragedata.ProjectData;
import net.sourceforge.cobertura.coveragedata.SourceFileData;
import net.sourceforge.cobertura.util.FileFinder;
import net.sourceforge.cobertura.util.FileFixture;
import junit.framework.TestCase;

public class ComplexityCalculatorTest extends TestCase {
    private FileFixture fileFixture;
    private FileFinder fileFinder;
    private ComplexityCalculator complexity;
	
    public void testGetCCNForSourceFile() {
    	/*
    	 * Sample1.java has a @Deprecated annotation to make sure the complexity works with annotations.
    	 */
    	double ccn1 = complexity.getCCNForSourceFile( new SourceFileData("com/example/Sample1.java"));
    	assertTrue( ccn1!=0.0);
    	double ccn2 = complexity.getCCNForSourceFile( new SourceFileData("com/example/Sample2.java"));
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);

    	ccn1 = complexity.getCCNForSourceFile( new SourceFileData("com/example/Sample5.java"));
    	assertTrue( ccn1!=0.0);
    	ccn2 = complexity.getCCNForSourceFile( new SourceFileData("com/example/Sample6.java"));
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);

    	double ccn0 = complexity.getCCNForSourceFile( new SourceFileData("com/example/Sample8.java"));
    	assertTrue( ccn0==0.0);

    	ccn0 = complexity.getCCNForSourceFile( new SourceFileData("Foo.java"));
    	assertTrue( ccn0==0.0);
    }

    public void testGetCCNForClass() {
    	double ccn1 = complexity.getCCNForClass( new ClassData("com.example.Sample3"));
    	assertTrue( ccn1!=0.0);
    	double ccn2 = complexity.getCCNForClass( new ClassData("com.example.Sample4"));
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);

    	ccn1 = complexity.getCCNForClass( new ClassData("com.example.Sample5"));
    	assertTrue( ccn1!=0.0);
    	ccn2 = complexity.getCCNForClass( new ClassData("com.example.Sample6"));
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);

    	double ccn0 = complexity.getCCNForClass( new ClassData("com.example.Sample8"));
    	assertEquals( 0.0, ccn0, 0.0);

    	ccn0 = complexity.getCCNForClass( new ClassData("Foo"));
    	assertEquals( 0.0, ccn0, 0.0);
    }

    public void testGetCCNForPackage() {
    	PackageData pd = new PackageData("com.example");
    	pd.addClassData( new ClassData("com.example.Sample3"));
    	double ccn1 = complexity.getCCNForPackage( pd);
    	assertTrue( ccn1!=0.0);

    	ComplexityCalculator complexity2 = new ComplexityCalculator( fileFinder);
    	pd.addClassData( new ClassData("com.example.Sample4"));
    	double ccn2 = complexity2.getCCNForPackage( pd);
    	double ccn3 = complexity2.getCCNForPackage( pd);
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);
    	assertEquals( ccn2, ccn3, 0e-9);

    	PackageData empty = new PackageData( "com.example2");
    	ComplexityCalculator complexity3 = new ComplexityCalculator( fileFinder);
    	assertEquals( 0.0, complexity3.getCCNForPackage( empty), 0.0);
    }

    public void testGetCCNForProject() {
    	ProjectData project = new ProjectData();
    	project.addClassData( new ClassData("com.example.Sample5"));
    	double ccn1 = complexity.getCCNForProject( project);
    	assertTrue( ccn1!=0.0);

    	ComplexityCalculator complexity2 = new ComplexityCalculator( fileFinder);
    	project.addClassData( new ClassData("com.example.Sample4"));
    	double ccn2 = complexity2.getCCNForProject( project);
    	assertTrue( ccn2!=0.0);
    	assertTrue( ccn1!=ccn2);
    	
    	ComplexityCalculator complexity3 = new ComplexityCalculator( fileFinder);
    	project.addClassData( new ClassData("com.example.Sample8"));
    	double ccn3 = complexity3.getCCNForProject( project);
    	assertEquals( ccn2, ccn3, 0e-9);

    	ComplexityCalculator complexity4 = new ComplexityCalculator( fileFinder);
    	double ccn0 = complexity4.getCCNForProject( new ProjectData());
    	assertEquals( 0.0, ccn0, 0.0);
    }

    public void testGetCCNForSourceFile_null() {
    	try {
    		complexity.getCCNForSourceFile(null);
    		fail( "NullPointerException expected");
    	} catch( NullPointerException ex) {}
    }
    
    public void testGetCCNForPackage_null() {
    	try {
    		complexity.getCCNForPackage(null);
    		fail( "NullPointerException expected");
    	} catch( NullPointerException ex) {}
    }

   	public void testGetCCNForProject_null() {
    	try {
    		complexity.getCCNForProject(null);
    		fail( "NullPointerException expected");
    	} catch( NullPointerException ex) {}
   	}
    
    public void testConstructor_null() {
    	try {
    		new ComplexityCalculator(null);
    		fail( "NullPointerException expected");
    	} catch( NullPointerException ex) {}
    }

   	
    protected void setUp() throws Exception {
        super.setUp();
        fileFixture = new FileFixture();
        fileFixture.setUp();

        fileFinder = new FileFinder();
        fileFinder.addSourceDirectory(fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[0]).toString());
        fileFinder.addSourceDirectory(fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[1]).toString());
        fileFinder.addSourceFile( fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[2]).toString(), "com/example\\Sample5.java");
        fileFinder.addSourceFile( fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[2]).toString(), "com/example/Sample6.java");
        fileFinder.addSourceFile( fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[3]).toString(), "com/example/Sample7.java");

        // Do not add com/example/Sample8.java
        // fileFinder.addSourceFile( fileFixture.sourceDirectory(FileFixture.SOURCE_DIRECTORY_IDENTIFIER[3]).toString(), "com/example/Sample8.java");
        
        complexity = new ComplexityCalculator( fileFinder);
    }

    protected void tearDown() throws Exception {
        super.tearDown();
        fileFixture.tearDown();
    }
}