EasyMock EasyMockSupport

EasyMockSupport是Utiliy或輔助類的測試類。它提供了以下功能

• replayAll() - 都記錄在一個批次中創建模擬。

• verifyAll() - 驗證所有模擬操作於一個批次。

• resetAll() - 將所有模擬操作於一個批次。

示例

創建一個接口CalculatorService，其目的是提供各種計算相關的功能。

CalculatorService.java

public interface CalculatorService { public double add(double input1, double input2); public double subtract(double input1, double input2); public double multiply(double input1, double input2); public double divide(double input1, double input2); }

創建一個Java類用來表示MathApplication。

MathApplication.java

public class MathApplication { private CalculatorService calcService; public void setCalculatorService(CalculatorService calcService){ this.calcService = calcService; } public double add(double input1, double input2){ return calcService.add(input1, input2); } public double subtract(double input1, double input2){ return calcService.subtract(input1, input2); } public double multiply(double input1, double input2){ return calcService.multiply(input1, input2); } public double divide(double input1, double input2){ return calcService.divide(input1, input2); } }

讓我們來測試MathApplication類，通過它注入CalculatorService作一個模擬。Mock將由EasyMock創建。

MathApplicationTester.java

import org.easymock.EasyMockRunner; import org.easymock.EasyMockSupport; import org.junit.Assert; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; @RunWith(EasyMockRunner.class) public class MathApplicationTester extends EasyMockSupport { private MathApplication mathApplication1; private MathApplication mathApplication2; private CalculatorService calcService1; private CalculatorService calcService2; @Before public void setUp(){ mathApplication1 = new MathApplication(); mathApplication2 = new MathApplication(); calcService1 = createNiceMock(CalculatorService.class); calcService2 = createNiceMock(CalculatorService.class); mathApplication1.setCalculatorService(calcService1); mathApplication2.setCalculatorService(calcService2); } @Test public void testCalcService(){ //activate all mocks replayAll(); //test the add functionality Assert.assertEquals(mathApplication1.add(20.0, 10.0),0.0,0); //test the substract functionality Assert.assertEquals(mathApplication1.subtract(20.0, 10.0),0.0,0); //test the multiply functionality Assert.assertEquals(mathApplication1.divide(20.0, 10.0),0.0,0); //test the divide functionality Assert.assertEquals(mathApplication1.multiply(20.0, 10.0),0.0,0); //test the add functionality Assert.assertEquals(mathApplication2.add(20.0, 10.0),0.0,0); //test the substract functionality Assert.assertEquals(mathApplication2.subtract(20.0, 10.0),0.0,0); //test the multiply functionality Assert.assertEquals(mathApplication2.divide(20.0, 10.0),0.0,0); //test the divide functionality Assert.assertEquals(mathApplication2.multiply(20.0, 10.0),0.0,0); //verify all the mocks verifyAll(); } }

創建一個Java類在文件夾 C:\ > EasyMock_WORKSPACE 執行測試用例

TestRunner.java

import org.junit.runner.JUnitCore; import org.junit.runner.Result; import org.junit.runner.notification.Failure; public class TestRunner { public static void main(String[] args) { Result result = JUnitCore.runClasses(MathApplicationTester.class); for (Failure failure : result.getFailures()) { System.out.println(failure.toString()); } System.out.println(result.wasSuccessful()); } }

驗證結果

使用javac編譯如下類

C:\EasyMock_WORKSPACE>javac MathApplicationTester.java

現在運行測試運行看結果

C:\EasyMock_WORKSPACE>java TestRunner

驗證輸出

true