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SLF4J: A number (4) of logging calls during the initialization phase have been intercepted and are
SLF4J: now being replayed. These are subject to the filtering rules of the underlying logging system.
SLF4J: See also http://www.slf4j.org/codes.html#replay

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public class LogbackInitializerExtension implements BeforeAllCallback {

	@Override
	public void beforeAll(ExtensionContext context) throws Exception {
		pauseTillLogbackReady();
	}

	private static void pauseTillLogbackReady() {
		while(!isLogbackReady());
	}

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@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@ExtendWith(LogbackInitializerExtension.class)
public @interface LogbackInitializer {

}

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public class LocalAppender extends AppenderBase<ILoggingEvent> {
	private List<ILoggingEvent> events = new ArrayList<>();

	public LocalAppender() {
		start();
	}

	public static LocalAppender initialize(String... loggers) {
		LocalAppender localAppender = new LocalAppender();
		for (String loggerName : loggers) {

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@LogbackInitializer
public class TestLocalAppender {

	@Test
	@ResourceLock(value = "LOGGING", mode = ResourceAccessMode.READ_WRITE)
	public void testLocalAppenderA() {
		OtherLogProducingService service = new OtherLogProducingService();

		LocalAppender localAppender = LocalAppender.initialize("com.bk.logging.OtherLogProducingService");

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public class TestAcceptedMediaTypes {

	private static final MediaType[] SUPPORTED_MEDIA_TYPES = new MediaType[] { MediaType.APPLICATION_JSON,
			MediaType.APPLICATION_XML };

	@TestFactory
	Collection<DynamicTest> testAcceptedMediaTypes() throws Exception {

		// Creating a classpath scanner to find all controller classes in project
		ClassPathBeanDefinitionScanner scanner = new ClassPathBeanDefinitionScanner(new DefaultListableBeanFactory(),

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public class TestAcceptedMediaTypes {

	private static final MediaType[] SUPPORTED_MEDIA_TYPES = new MediaType[] { MediaType.APPLICATION_JSON_UTF8,
			MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML };

	@TestFactory
	Collection<DynamicContainer> testAcceptedMediaTypes() throws Exception {

		...
		List<DynamicContainer> dynamicContainers = new ArrayList<>();

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@TestFactory
public List<DynamicTest> exampleTestFactory() {
	return Arrays.asList(
		dynamicTest("Dynamic square " + 2, () -> assertEquals(4, 2 * 2)),//
		dynamicTest("Dynamic true " + true, () -> assertTrue(true)));
}

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>com.bk.booking</groupId>
	<artifactId>spring-boot-simple-surefire-example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

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<plugin>								
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-surefire-plugin</artifactId>
	<version>2.21.0</version>
	<dependencies>
		<dependency>
			<groupId>org.junit.platform</groupId>
			<artifactId>junit-platform-surefire-provider</artifactId>
			<version>${junit-platform.version}</version>
		</dependency>