spring-boot-2-template

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package by.andd3dfx.templateapp.persistence.dao;
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import by.andd3dfx.templateapp.persistence.entities.Article;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.extension.ExtendWith;
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import org.mockito.junit.jupiter.MockitoExtension;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
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import org.springframework.data.domain.PageRequest;
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import org.springframework.data.domain.Pageable;
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import org.springframework.data.domain.Sort;
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import java.time.LocalDateTime;
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import java.util.Arrays;
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import java.util.List;
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import static org.hamcrest.CoreMatchers.is;
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import static org.hamcrest.MatcherAssert.assertThat;
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import static org.junit.jupiter.api.Assertions.*;
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@DataJpaTest
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class ArticleRepositoryTest {
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    @Autowired
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    private ArticleRepository repository;
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    private Article entity;
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    private Article entity2;
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    private Article entity3;
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    @BeforeEach
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    public void setup() {
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        repository.deleteAll();
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        entity = buildArticle("Ivan", "HD", LocalDateTime.parse("2010-12-03T10:15:30"));
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        entity2 = buildArticle("Vasily", "HD", LocalDateTime.parse("2011-12-03T10:15:30"));
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        entity3 = buildArticle("Ivan", "4K", LocalDateTime.parse("2012-12-03T10:15:30"));
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        repository.saveAll(Arrays.asList(entity, entity2, entity3));
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    }
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    @AfterEach
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    public void tearDown() {
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        repository.deleteAll();
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    }
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    @Test
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    public void findAll() {
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        var result = repository.findAll(Pageable.ofSize(10));
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        assertThat("Wrong records amount", result.getNumberOfElements(), is(3));
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        assertTrue(result.getContent().containsAll(List.of(entity, entity2, entity3)));
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    }
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    @Test
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    public void findAll_withPageNSizeNSorting() {
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        var result = repository.findAll(PageRequest.of(0, 2, Sort.by("title", "summary")));
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        assertThat("Wrong records amount", result.getNumberOfElements(), is(2));
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        var articles = result.getContent();
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        assertThat(articles.get(0), is(entity3));
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        assertThat(articles.get(1), is(entity));
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    }
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    private static Article buildArticle(String title, String summary, LocalDateTime timestamp) {
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        Article article = new Article();
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        article.setTitle(title);
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        article.setSummary(summary);
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        article.setText("any text");
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        article.setTimestamp(timestamp);
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        article.setAuthor("Some author");
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        return article;
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    }
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}