TestNG Annotations示例

package com.websystique.testng;
 
public class Calculator {
     
    public double add(double a, double b){
        return a+b;
    }
     
    public double subtract(double a, double b){
        return a-b;
    }
     
    public double multiply(double a, double b){
        return a*b;
    }
     
}

package com.websystique.testng;
 
import java.lang.reflect.Method;
 
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
 
public class TestCalculator {
 
    Calculator calculator;
     
    @BeforeClass
    public void beforeClass(){
        //Ideal place to perform some setup which is shared among all tests.
        //E.g. Initializing DB connection, setting environment properties
        System.out.println("@BeforeClass: I run only once, before first test start.");
        calculator = new Calculator();
    }
 
    @AfterClass
    public void afterClass(){
        //Ideal place to perform some cleanup of setup which is shared among all tests.
        System.out.println("@AfterClass: I run only once, after all tests have been done.\n");
        calculator = null;
    }
 
    @BeforeMethod
    public void beforeEachTestMethod(Method method){//Parameter are optional
        //May perform some initialization/setup before each test.
        //E.g. Initializing User whose properties may be altered by actual @Test
        System.out.println("\n@BeforeMethod: I run before each test method. Test to be executed is : "+method.getName());
    }
     
    @AfterMethod
    public void afterEachTestMethod(Method method){//Parameter are optional
        //May perform cleanup of initialization/setup after each test.
        System.out.println("@AfterMethod: I run after each test method. Test just executed is : "+method.getName()+"\n");
    }
 
    @Test
    public void testAdd(){
        System.out.println("@Test add");
        Assert.assertEquals(calculator.add(2, 3), 5.0);
    }
     
    @Test
    public void testSubtract(){
        System.out.println("@Test subtract");
        Assert.assertTrue(calculator.subtract(5, 3) > 1, "Subtract test failed");
    }
     
    @Test
    public void testMultiply(){
        System.out.println("@Test multiply");
        Assert.assertEquals(calculator.multiply(5, 3) , 15.0);
    }
     
}

@BeforeClass: I run only once, before first test start.
 
@BeforeMethod: I run before each test method. Test to be executed is : testAdd
@Test add
@AfterMethod: I run after each test method. Test just executed is : testAdd
 
 
@BeforeMethod: I run before each test method. Test to be executed is : testMultiply
@Test multiply
@AfterMethod: I run after each test method. Test just executed is : testMultiply
 
 
@BeforeMethod: I run before each test method. Test to be executed is : testSubtract
@Test subtract
@AfterMethod: I run after each test method. Test just executed is : testSubtract
 
@AfterClass: I run only once, after all tests have been done.
 
PASSED: testAdd
PASSED: testMultiply
PASSED: testSubtract
 
===============================================
    Default test
    Tests run: 3, Failures: 0, Skips: 0
===============================================
 
 
===============================================
Default suite
Total tests run: 3, Failures: 0, Skips: 0
===============================================