参数化测试

package com.shengsiyuan.junit4;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;
import java.util.Collection;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class ParametersTest
{
private int expected;

private int input1;

private int input2;

private Calculator cal;

@Parameters
public static Collection prepareData()
{
Object[][] object = { { 3, 1, 2 }, { -4, -1, -3 }, { 5, 2, 3 },
{ 4, -4, 8 } };

return Arrays.asList(object);
}

@Before
public void setUp()
{
cal = new Calculator();
}

public ParametersTest(int expected, int input1, int input2)
{
this.expected = expected;
this.input1 = input1;
this.input2 = input2;
}

@Test
public void testAdd()
{
assertEquals(this.expected, cal.add(this.input1, this.input2));
}
}



实例二：
package com.shengsiyuan.junit4;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({ CalculatorTest.class, LargestTest.class,
ParametersTest.class })
public class TestAll
{

}


实例三

package com.shengsiyuan.junit4;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses(TestAll.class)
public class TestAll2
{

}