eclEmmaツールを使用してテストケースごとにレコードテストカバレッジを作成

Question

eclEmmaツールを使用して、テストケースごとにテストカバレッジを記録します。カバレッジは、対象クラスのテストケースがカバーする％を含み、そのテストケースによって実行されたステートメントにもアクセスする必要があります。 Follwowingはテストクラスを実行し、テストクラス自体のカバレッジを生成するコードです。

package expJaCoCo; 
public class Calculadora 
{ 
    public Calculadora() { } 

    public int add(int x, final int y) { 
     return x + y; 
    } 
} 

CalculadoraTest.java

package expJaCoCo; 
import junit.framework.TestCase; 
import org.junit.BeforeClass; 
import org.junit.AfterClass; 
import org.junit.Test; 
public class CalculadoraTest extends TestCase 
{ 
    private Calculadora c1; 

    @BeforeClass 
    public void setUp() { c1 = new Calculadora(); } 

    @AfterClass 
    public void tearDown() { c1 = null; } 

    @Test 
    public void testAdd() { assertTrue(c1.add(1, 0) == 1); } 
} 

CoreTutorial.java

package expJaCoCo; 
import java.io.InputStream; 
import java.util.HashMap; 
import java.util.Map; 
import org.jacoco.core.analysis.Analyzer; 
import org.jacoco.core.analysis.CoverageBuilder; 
import org.jacoco.core.analysis.IClassCoverage; 
import org.jacoco.core.analysis.ICounter; 
import org.jacoco.core.data.ExecutionDataStore; 
import org.jacoco.core.instr.Instrumenter; 
import org.jacoco.core.runtime.IRuntime; 
import org.jacoco.core.runtime.LoggerRuntime; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
public class CoreTutorial 
{ 
    /** 
    * A class loader that loads classes from in-memory data. 
    */ 
    public static class MemoryClassLoader extends ClassLoader 
    { 
     private final Map<String, byte[]> definitions = new HashMap<String, byte[]>(); 
     /** 
     * Add a in-memory representation of a class. 
     * 
     * @param name name of the class 
     * @param bytes class definition 
     */ 
     public void addDefinition(final String name, final byte[] bytes) { 
      definitions.put(name, bytes); 
     } 
     @Override 
     protected Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException 
     { 
      final byte[] bytes = definitions.get(name); 
      if (bytes != null) 
       return defineClass(name, bytes, 0, bytes.length); 
      return super.loadClass(name, resolve); 
     } 
    } 
    private InputStream getTargetClass(final String name) 
    { 
     final String resource = '/' + name.replace('.', '/') + ".class"; 
     return getClass().getResourceAsStream(resource); 
    } 
    private void printCounter(final String unit, final ICounter counter) 
    { 
     final Integer missed = Integer.valueOf(counter.getMissedCount()); 
     final Integer total  = Integer.valueOf(counter.getTotalCount()); 

     System.out.printf("%s of %s %s missed%n", missed, total, unit); 
    } 
    private String getColor(final int status) 
    { 
     switch (status) { 
     case ICounter.NOT_COVERED: 
      return "red"; 
     case ICounter.PARTLY_COVERED: 
      return "yellow"; 
     case ICounter.FULLY_COVERED: 
      return "green"; 
     } 
     return ""; 
    } 
    private void runTutorial() throws Exception 
    { 
     final String targetName = CalculadoraTest.class.getName(); 
     // For instrumentation and runtime we need a IRuntime instance to collect execution data: 
     final IRuntime runtime = new LoggerRuntime(); 
     // The Instrumenter creates a modified version of our test target class that contains additional probes for execution data recording: 
     final Instrumenter instr = new Instrumenter(runtime); 
     final byte[] instrumented = instr.instrument(getTargetClass(targetName)); 
     // Now we're ready to run our instrumented class and need to startup the runtime first: 
     runtime.startup(); 
     // In this tutorial we use a special class loader to directly load the instrumented class definition from a byte[] instances. 
     final MemoryClassLoader memoryClassLoader = new MemoryClassLoader(); 
     memoryClassLoader.addDefinition(targetName, instrumented); 
     final Class<?> targetClass = memoryClassLoader.loadClass(targetName); 
     // Here we execute our test target class through its Runnable interface: 
     /*final Runnable targetInstance = (Runnable) targetClass.newInstance(); 
     targetInstance.run();*/ 
     JUnitCore junit = new JUnitCore(); 
     Result result = junit.run(targetClass); 
     System.out.println(result.getRunTime()); 
     // At the end of test execution we collect execution data and shutdown the runtime: 
     final ExecutionDataStore executionData = new ExecutionDataStore(); 
     runtime.collect(executionData, null, false); 
     runtime.shutdown(); 
     // Together with the original class definition we can calculate coverage information: 
     final CoverageBuilder coverageBuilder = new CoverageBuilder(); 
     final Analyzer analyzer = new Analyzer(executionData, coverageBuilder); 
     analyzer.analyzeClass(getTargetClass(targetName)); 
     // Let's dump some metrics and line coverage information: 
     for (final IClassCoverage cc : coverageBuilder.getClasses()) 
     { 
      System.out.printf("Coverage of class %s%n", cc.getName()); 
      printCounter("instructions", cc.getInstructionCounter()); 
      printCounter("branches", cc.getBranchCounter()); 
      printCounter("lines", cc.getLineCounter()); 
      printCounter("methods", cc.getMethodCounter()); 
      printCounter("complexity", cc.getComplexityCounter()); 
      for (int i = cc.getFirstLine(); i <= cc.getLastLine(); i++) { 
       System.out.printf("Line %s: %s%n", Integer.valueOf(i), getColor(cc.getLine(i).getStatus())); 
      } 
     } 
    } 
    public static void main(final String[] args) throws Exception { 
     new CoreTutorial().runTutorial(); 
    } 
} 

この例では、実行され、楽器CalculadoraTestとCalculadoraTest.javaのカバレッジを提供しますが、私はCalculadoraの報道をしたいです。 java 希望する結果を得るためにコードを変更するにはどうしたらいいですか？

Answer 1

この例では、実行して、楽器CalculadoraTestとCalculadoraTest.javaのカバレッジを提供しますが、私は望ましい結果を得るために、コードを変更することができますどのように私はCalculadora.javaの報道をしたいです。 CalculadoraTest.class.getName()がカバレッジ計測/ JaCoCoによる分析とJUnitによる実行の両方のために使用される、しかし、最初のケースでCalculadora.class.getName()なければならない

targetName。私はそれをやってみましたが、JUnitのは、 `CalculadoraTest.class`を実行するとき、それは代わりに、インストルメント上でそれを実行するのでCalculadora.class``上のテストケースを実行します

import java.io.InputStream; 
import java.util.HashMap; 
import java.util.Map; 
import org.jacoco.core.analysis.Analyzer; 
import org.jacoco.core.analysis.CoverageBuilder; 
import org.jacoco.core.analysis.IClassCoverage; 
import org.jacoco.core.analysis.ICounter; 
import org.jacoco.core.data.ExecutionDataStore; 
import org.jacoco.core.instr.Instrumenter; 
import org.jacoco.core.runtime.IRuntime; 
import org.jacoco.core.runtime.LoggerRuntime; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.jacoco.core.runtime.RuntimeData; 
import org.jacoco.core.data.SessionInfoStore; 

public class CoreTutorialTest 
{ 
    /** 
    * A class loader that loads classes from in-memory data. 
    */ 
    public static class MemoryClassLoader extends ClassLoader 
    { 
     private final Map<String, byte[]> definitions = new HashMap<String, byte[]>(); 
     /** 
     * Add a in-memory representation of a class. 
     * 
     * @param name name of the class 
     * @param bytes class definition 
     */ 
     public void addDefinition(final String name, final byte[] bytes) { 
      definitions.put(name, bytes); 
     } 
     @Override 
     protected Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException 
     { 
      final byte[] bytes = definitions.get(name); 
      if (bytes != null) 
       return defineClass(name, bytes, 0, bytes.length); 
      return super.loadClass(name, resolve); 
     } 
    } 
    private InputStream getTargetClass(final String name) 
    { 
     final String resource = '/' + name.replace('.', '/') + ".class"; 
     return getClass().getResourceAsStream(resource); 
    } 
    private void printCounter(final String unit, final ICounter counter) 
    { 
     final Integer missed = Integer.valueOf(counter.getMissedCount()); 
     final Integer total  = Integer.valueOf(counter.getTotalCount()); 

     System.out.printf("%s of %s %s missed%n", missed, total, unit); 
    } 
    private String getColor(final int status) 
    { 
     switch (status) { 
     case ICounter.NOT_COVERED: 
      return "red"; 
     case ICounter.PARTLY_COVERED: 
      return "yellow"; 
     case ICounter.FULLY_COVERED: 
      return "green"; 
     } 
     return ""; 
    } 
    private void runTutorial() throws Exception 
    { 
     final String targetName = Calculadora.class.getName(); 
     // For instrumentation and runtime we need a IRuntime instance to collect execution data: 
     final IRuntime runtime = new LoggerRuntime(); 
     // The Instrumenter creates a modified version of our test target class that contains additional probes for execution data recording: 
     final Instrumenter instr = new Instrumenter(runtime); 
     final byte[] instrumented = instr.instrument(getTargetClass(targetName), ""); 
     // Now we're ready to run our instrumented class and need to startup the runtime first: 
     final RuntimeData data = new RuntimeData(); 
     runtime.startup(data); 
     // In this tutorial we use a special class loader to directly load the instrumented class definition from a byte[] instances. 
     final MemoryClassLoader memoryClassLoader = new MemoryClassLoader(); 
     memoryClassLoader.addDefinition(targetName, instrumented); 
     final Class<?> targetClass = memoryClassLoader.loadClass(targetName); 
     // Here we execute our test target class through its Runnable interface: 
     /*final Runnable targetInstance = (Runnable) targetClass.newInstance(); 
     targetInstance.run();*/ 

     String junitName = CalculadoraTest.class.getName(); 
     memoryClassLoader.addDefinition(junitName, instr.instrument(getTargetClass(junitName), "")); 
     final Class<?> junitClass = memoryClassLoader.loadClass(junitName); 
     JUnitCore junit = new JUnitCore(); 
     Result result = junit.run(junitClass); 

     System.out.println("Failure count: " + result.getFailureCount()); 

     // At the end of test execution we collect execution data and shutdown the runtime: 
     final ExecutionDataStore executionData = new ExecutionDataStore(); 
     data.collect(executionData, new SessionInfoStore(), false); 
     runtime.shutdown(); 
     // Together with the original class definition we can calculate coverage information: 
     final CoverageBuilder coverageBuilder = new CoverageBuilder(); 
     final Analyzer analyzer = new Analyzer(executionData, coverageBuilder); 
     analyzer.analyzeClass(getTargetClass(targetName), targetName); 
     // Let's dump some metrics and line coverage information: 
     for (final IClassCoverage cc : coverageBuilder.getClasses()) 
     { 
      System.out.printf("Coverage of class %s%n", cc.getName()); 
      printCounter("instructions", cc.getInstructionCounter()); 
      printCounter("branches", cc.getBranchCounter()); 
      printCounter("lines", cc.getLineCounter()); 
      printCounter("methods", cc.getMethodCounter()); 
      printCounter("complexity", cc.getComplexityCounter()); 
      for (int i = cc.getFirstLine(); i <= cc.getLastLine(); i++) { 
       System.out.printf("Line %s: %s%n", Integer.valueOf(i), getColor(cc.getLine(i).getStatus())); 
      } 
     } 
    } 
    public static void main(final String[] args) throws Exception { 
     new CoreTutorial().runTutorial(); 
    } 
}