feat(api): Add tests to the api

modules/telestion-api/src/test/java/de/wuespace/telestion/api/verticle/ConfigurationTest.java

@@ -0,0 +1,82 @@
+package de.wuespace.telestion.api.verticle;
+
+import de.wuespace.telestion.api.message.JsonMessage;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+/**
+ * <p>
+ *     <h1>Configuration Tests</h1>
+ *     Corresponding tests for the configuration classes provided by the Telestion Project.
+ * </p>
+ * <p>
+ *     <h2>{@link TelestionConfiguration}</h2>
+ *     This test checks if {@link TelestionConfiguration}:
+ *     <ul>
+ *         <li>
+ *             Is an Interface:<br/>
+ *             Records can only extend Interfaces - Messages or configurations primarily contain data which makes them a good
+ *             match
+ *         </li>
+ *         <li>
+ *             Extends {@link JsonMessage}:<br/>
+ *             To be serializable and used by other convenience methods of the Telestion Project
+ *         </li>
+ *     </ul>
+ * </p>
+ * <p>
+ *     <h2>Provided Configurations</h2>
+ *     In contrast to the base interface {@link TelestionConfiguration} the other provided Configurations:
+ *     <ul>
+ *         <li>Must implement {@link TelestionConfiguration} (to use all the features of the Telestion-Project)</li>
+ *         <li>
+ *             Should be a Record:<br/>
+ *             As these classes should only contain data, they are a prime example for records and therefore be
+ *             implemented like this.
+ *         </li>
+ *         <li>Can be instantiated (is neither abstract, nor an interface)</li>
+ *     </ul>
+ * </p>
+ *
+ * @author Cedric Boes (cb0s)
+ */
+public final class ConfigurationTest {
+	@Nested
+	public class TelestionConfigTest {
+		@Test
+		public void shouldBeInterface() {
+			// Needs to be an interface to be implemented by `Records`
+			assertThat(TelestionConfiguration.class.isInterface(), is(true));
+		}
+
+		@Test
+		public void shouldExtendJsonMessage() {
+			assertThat(JsonMessage.class.isAssignableFrom(TelestionConfiguration.class), is(true));
+		}
+	}
+
+	@Nested
+	public class ProvidedConfigurationTest {
+		@Test
+		public void shouldImplementTelestionConfiguration() {
+			assertThat(TelestionConfiguration.class.isAssignableFrom(NoConfiguration.class), is(true));
+			assertThat(TelestionConfiguration.class.isAssignableFrom(UntypedConfiguration.class), is(true));
+		}
+
+		@Test
+		public void shouldBeRecord() {
+			assertThat(NoConfiguration.class.isRecord(), is(true));
+			assertThat(UntypedConfiguration.class.isRecord(), is(true));
+		}
+
+		@Test
+		public void shouldBeInstantiable() {
+			// Should not throw exceptions
+			new NoConfiguration();
+			new UntypedConfiguration();
+		}
+	}
+}