Add tests, add docu, use subpackage.

src/test/java/io/kokuwa/micronaut/logging/AbstractTest.java

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+package io.kokuwa.micronaut.logging;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.MethodOrderer.Alphanumeric;
+import org.junit.jupiter.api.TestMethodOrder;
+import org.slf4j.MDC;
+
+import io.micronaut.test.annotation.MicronautTest;
+
+/**
+ * Base for tests regarding logging.
+ *
+ * @author Stephan Schnabel
+ */
+@MicronautTest
+@TestMethodOrder(Alphanumeric.class)
+public abstract class AbstractTest {
+
+	@BeforeEach
+	@AfterEach
+	void setUpMdc() {
+		MDC.clear();
+	}
+}

src/test/java/io/kokuwa/micronaut/logging/mdc/MDCTurboFilterTest.java

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+package io.kokuwa.micronaut.logging.mdc;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+
+import io.kokuwa.micronaut.logging.AbstractTest;
+import io.micronaut.test.annotation.MicronautTest;
+
+/**
+ * Test for {@link MDCTurboFilterConfigurer}.
+ *
+ * @author Stephan Schnabel
+ */
+@DisplayName("mdc")
+@MicronautTest(environments = "test-mdc")
+public class MDCTurboFilterTest extends AbstractTest {
+
+	final Logger logA = LoggerFactory.getLogger("io.kokuwa.a");
+	final Logger logB = LoggerFactory.getLogger("io.kokuwa.b");
+	final Logger logC = LoggerFactory.getLogger("io.kokuwa.c");
+	final Logger logOther = LoggerFactory.getLogger("org.example");
+
+	@DisplayName("no key set")
+	@Test
+	void noKeySet() {
+		assertFalse(logA.isDebugEnabled());
+		assertFalse(logA.isTraceEnabled());
+		assertFalse(logB.isDebugEnabled());
+		assertFalse(logB.isTraceEnabled());
+		assertFalse(logC.isDebugEnabled());
+		assertFalse(logC.isTraceEnabled());
+		assertFalse(logOther.isDebugEnabled());
+		assertFalse(logOther.isTraceEnabled());
+	}
+
+	@DisplayName("match nothing")
+	@Test
+	void matchNothing() {
+		MDC.put("key", "value-4");
+		assertFalse(logA.isDebugEnabled());
+		assertFalse(logA.isTraceEnabled());
+		assertFalse(logB.isDebugEnabled());
+		assertFalse(logB.isTraceEnabled());
+		assertFalse(logC.isDebugEnabled());
+		assertFalse(logC.isTraceEnabled());
+		assertFalse(logOther.isDebugEnabled());
+		assertFalse(logOther.isTraceEnabled());
+	}
+
+	@DisplayName("match root logger")
+	@Test
+	void matchRootLogger() {
+		MDC.put("key", "value-3");
+		assertTrue(logA.isDebugEnabled());
+		assertTrue(logA.isTraceEnabled());
+		assertTrue(logB.isDebugEnabled());
+		assertTrue(logB.isTraceEnabled());
+		assertTrue(logC.isDebugEnabled());
+		assertTrue(logC.isTraceEnabled());
+		assertFalse(logOther.isDebugEnabled());
+		assertFalse(logOther.isTraceEnabled());
+	}
+
+	@DisplayName("match single filter")
+	@Test
+	void matchSingleFilter() {
+		MDC.put("key", "value-1");
+		assertTrue(logA.isDebugEnabled());
+		assertFalse(logA.isTraceEnabled());
+		assertTrue(logB.isDebugEnabled());
+		assertFalse(logB.isTraceEnabled());
+		assertFalse(logC.isDebugEnabled());
+		assertFalse(logC.isTraceEnabled());
+		assertFalse(logOther.isDebugEnabled());
+		assertFalse(logOther.isTraceEnabled());
+	}
+
+	@DisplayName("match multiple filter")
+	@Test
+	void matchMultipleFilter() {
+		MDC.put("key", "value-2");
+		assertTrue(logA.isDebugEnabled());
+		assertFalse(logA.isTraceEnabled());
+		assertTrue(logB.isDebugEnabled());
+		assertTrue(logB.isTraceEnabled());
+		assertTrue(logC.isDebugEnabled());
+		assertTrue(logC.isTraceEnabled());
+		assertFalse(logOther.isDebugEnabled());
+		assertFalse(logOther.isTraceEnabled());
+	}
+
+	@DisplayName("match simple config")
+	@Test
+	void matchSimpleConfig() {
+		MDC.put("user", "foobar");
+		assertTrue(logA.isDebugEnabled());
+		assertTrue(logA.isTraceEnabled());
+		assertTrue(logB.isDebugEnabled());
+		assertTrue(logB.isTraceEnabled());
+		assertTrue(logC.isDebugEnabled());
+		assertTrue(logC.isTraceEnabled());
+		assertTrue(logOther.isDebugEnabled());
+		assertTrue(logOther.isTraceEnabled());
+	}
+}

src/test/resources/META-INF/build-info.properties

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+serviceName: ${project.artifactId}
+serviceVersion: ${project.version}

src/test/resources/application-test-mdc.yaml

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+logger:
+  mdc:
+    key1:
+      key: key
+      level: DEBUG
+      loggers:
+      - io.kokuwa.a
+      - io.kokuwa.b
+      values:
+      - value-1
+      - value-2
+    key2:
+      key: key
+      level: TRACE
+      loggers:
+      - io.kokuwa.b
+      - io.kokuwa.c
+      values:
+      - value-2
+    key:
+      level: TRACE
+      loggers:
+      - io.kokuwa
+      values:
+      - value-3
+    user: {}