[app-wiring-refactor]: Define external configuration

Mage.Server/src/test/java/mage/server/util/ConfigFactoryTest.java

@@ -0,0 +1,34 @@
+package mage.server.util;
+
+import mage.server.util.config.Config;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+public class ConfigFactoryTest {
+
+    @Test
+    @DisplayName("should unmarshal configuration from file")
+    void loadConfig() {
+        final Config config = ConfigFactory.loadFromFile("config/config.xml");
+
+        assertThat(config.getServer().getServerName()).isEqualTo("mage-server");
+        assertThat(config.getServer().getPort()).isEqualTo(17171);
+    }
+
+    @Test
+    @DisplayName("should fail if config is malformed")
+    void failOnMalformed() {
+        assertThatExceptionOfType(ConfigurationException.class)
+                .isThrownBy(() -> ConfigFactory.loadFromFile("config/config_error.xml"));
+    }
+
+    @Test
+    @DisplayName("should fail if file does not exist")
+    void failOnNotFound() {
+        assertThatExceptionOfType(ConfigurationException.class)
+                .isThrownBy(() -> ConfigFactory.loadFromFile("does not exist"));
+    }
+}