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【SpringBoot】テストクラスで@Autowiredを動かすまで【JUnit5】

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やること

SpringBoot + JUnit5で、テスト時にコンストラクタパターンのインジェクションを動かすまでやります。

やり方

@ExtendWith(SpringExtension.class)@SpringBootTestを付与すれば動きました。

サンプルコード

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit.jupiter.SpringExtension;

@DisplayName("コンストラクタパターンを動かすテスト")
@ExtendWith(SpringExtension.class)
@SpringBootTest
class AutowiredTest {

    private final AutowiredClass autowiredClass;

    private final String hoge;
    private final String fuga;

    @Autowired
    AutowiredTest(AutowiredClass autowiredClass) {
        this.autowiredClass = autowiredClass;

        hoge = "文字列";
        fuga = "文字列";
    }

    @Test
    @DisplayName("何らかのテスト")
    void uploadFile() {
        assertEquals(hoge, fuga);
    }
}

補足

JUnit5なので、クラス中ではpublicを付けないで色々書けます。
また、コンストラクタはprivateでもインジェクションしてくれます。

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