一定の基準をもったテスト

基本ソース

import static org.junit.Assert.*;

import java.util.Arrays;
import java.util.List;

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 ParameterizedTest {

	@Parameters
	public static final List<Object[]> parameters() {
		return Arrays.asList(new Object[][] {
				{ 1, 2, 3 },
				{ 2, 3, 5 },
		});
	};

	int a;
	int b;
	int c;

	public ParameterizedTest(int a, int b, int c) {
		this.a = a;
		this.b = b;
		this.c = c;
	}

	@Test
	public void test() {
		assertEquals(a + b, c);
	}

}

例外チェックする場合

package jp.mirageworld.webapps.util;

import static org.junit.Assert.*;

import java.util.Arrays;
import java.util.List;

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 ParameterizedTest {

	@Parameters
	public static final List<Object[]> parameters() {
		return Arrays.asList(new Object[][] {
				{ 1, 2, 3, "X", NumberFormatException.class },
				{ 2, 3, 5, "0", null },
		});
	};

	int a;
	int b;
	int c;
	String n;
	Class<?> clazz;

	public ParameterizedTest(int a, int b, int c, String n, Class<?> clazz) {
		this.a = a;
		this.b = b;
		this.c = c;

		this.n = n;
		this.clazz = clazz;
	}

	@Test
	public void test() {
		try {
			assertEquals(a + b, c);
			Long.parseLong(n);
			assertNull(clazz);
		} catch (Exception e) {
			assertEquals(e.getClass(), clazz);
		}
	}

}