beyondxscratch

class BookmarkResolver implements ParameterResolver {

    @Override
    public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
        // Le type d'arguments concernés par le resolver
        return parameterContext.getParameter().getType() == Bookmark.class;
    }

    @Override
    public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {

beyondxscratch

@IntegrationTest
class MyIntegrationTests {
    // ...
}

@ExtendWith({
        MyIntegrationTestExtension.class,
        SpringExtension.class // Implémenté par Spring
})
@Retention(RetentionPolicy.RUNTIME)

beyondxscratch

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.*;

@ExtendWith(MyIntegrationTestExtension.class)
class MyIntegrationTests {

    @Test
    void test() {
        // ...
    }

beyondxscratch

junit.jupiter.displayname.generator.default = \
    org.junit.jupiter.api.DisplayNameGenerator$ReplaceUnderscores

beyondxscratch

@CsvSource({
        "http://www.junit.org, JUnit, Testing",
        "https://www.oracle.com/fr/java/, Java, Language"
})
@DisplayName("Should create the bookmark")
@ParameterizedTest(name = "for the url {0} named {1} & tagged {2}")
void should_create_the_bookmark(String url, String name, String tag) {}

beyondxscratch

import org.junit.jupiter.api.DisplayName;

@DisplayName("BookmarkRepository")
class BookmarkRepositoryTest {

    @Test
    @DisplayName("Should save a bookmark")
    void should_save_bookmark(Bookmark bookmark) {}

    @Nested

beyondxscratch

class BookmarkTest implements EqualityTest<Bookmark> {
  
    @Override
    public Bookmark createValue() {
        return Bookmark.create("http://www.test.com", "name");
    }

    @Override
    public Bookmark createOtherValue() {
        return Bookmark.create("http://www.test2.com", "other name");

beyondxscratch

public interface EqualityTest<T> {

    T createValue();
    T createOtherValue();

    @Test
    default void should_be_equal() {
        assertThat(createValue()).isEqualTo(createValue());
        assertThat(createValue().hashCode()).isEqualTo(createValue().hashCode());
    }

beyondxscratch

@ParameterizedTest
@MethodSource("somePeople")
void a_test_with_method_source(String name, int age, Month birthMonth) {
    // ...
}

private static Stream<Arguments> somePeople() {
    return Stream.of(
            Arguments.of("Alice", 25, JUNE),
            Arguments.of("Bob", 32, AUGUST)

beyondxscratch

@ParameterizedTest
@ValueSource(strings = {"JANUARY", "FEBRUARY", "MARCH"})
void a_test_with_explicit_conversion(
        @ConvertWith(MonthToNumberConverter.class) int month) {
    assertTrue(month <= 3);
}

class MonthToNumberConverter extends SimpleArgumentConverter {

    @Override