Logging error

.gitignore

@@ -4,3 +4,4 @@ build/
 
 # Intellij IDEA
 .idea/
+out/

build.gradle

@@ -40,6 +40,7 @@ dependencies {
     compile 'com.google.code.gson:gson:2.8.0'
 
     testCompile 'junit:junit:4.12'
+    testRuntimeOnly 'org.slf4j:slf4j-simple:1.7.25'
 
     deployerJars "org.apache.maven.wagon:wagon-ssh:2.2"
 }

src/test/java/io/kamax/matrix/LoggingDependencyTest.java

@@ -0,0 +1,43 @@
+/*
+ * matrix-java-sdk - Matrix Client SDK for Java
+ * Copyright (C) 2017 Arne Augenstein
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package io.kamax.matrix;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.helpers.NOPLoggerFactory;
+
+import java.net.URISyntaxException;
+
+/**
+ * A small test class, intended to verify that the logging framework has
+ * a suitable logging implementation.
+ */
+public class LoggingDependencyTest {
+    @Test
+    public void login() throws URISyntaxException {
+        if (LoggerFactory.getILoggerFactory() instanceof NOPLoggerFactory) {
+            Assert.fail("No logging implementation found, using fallback NOP logger");
+        }
+        Logger logger = LoggerFactory.getLogger("");
+        logger.info("If you see this info in the logger, everything is alright");
+    }
+}