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【Java】JUnitのテストを継承を使って共通化する

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テストケースの継承、やってみたらできました。

これで、

  • 前提条件を変えても同じテスト郡をパスする
  • 実装は結構異なるけども同じテストをパスする
    とかそういうのをコピペせずに書けます。
import static org.assertj.core.api.Assertions.*;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.experimental.runners.Enclosed;
import org.junit.runner.RunWith;

@RunWith(Enclosed.class)
public class TestSample {

	@Ignore
	public static class Template {
		@BeforeClass
		public static void _beforeClass() {
			// 共通の前処理
		}

		@AfterClass
		public static void _afterClass() {
			// 共通の後処理
		}

		@Before
		public void _setup() {
			// 共通の前処理
		}

		@After
		public void tearDown() {
			// 共通の後処理
		}

		@Test
		public void test1() {
			assertThat(1).isEqualTo(1);
		}

		@Test
		public void test2() {
			assertThat(1).isEqualTo(1);
		}
	}

	public static class TestA extends Template {
		@Before
		public void setup() {
			// 固有の前処理
		}
	}

	public static class TestB extends Template {
		@Before
		public void setup() {
			// 固有の前処理
		}
		
		@Test
		public void test3() {
			// 特別なテストケース
		}
	}
}
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