diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 0dd4b3546..ae8a33732 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="Kotlin2JsCompilerArguments">
+    <option name="sourceMapEmbedSources" />
+  </component>
   <component name="Kotlin2JvmCompilerArguments">
     <option name="jvmTarget" value="1.8" />
   </component>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index c3fc748c8..3e53d74a6 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -38,7 +38,7 @@
       <property name="caretWidth" class="java.lang.Integer" />
     </properties>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_10" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 45316b8c3..a114fb259 100644
--- a/build.gradle
+++ b/build.gradle
@@ -29,8 +29,7 @@ repositories {
 dependencies {
     compile "org.jetbrains.kotlin:kotlin-stdlib"
     compile fileTree(dir: 'lib', include: ['*.jar'])
-    //testCompile("org.junit.jupiter:junit-jupiter-api:5.3.2")
-    //testRuntime("org.junit.jupiter:junit-jupiter-engine:5.3.2")
+    implementation 'org.junit:junit-bom:5.2.0'
 }
 
 compileKotlin {
diff --git a/src/net/torvald/gdx/backends/lwjgl/audio/Opus.kt b/src/net/torvald/gdx/backends/lwjgl/audio/Opus.kt
deleted file mode 100644
index c4befa8c3..000000000
--- a/src/net/torvald/gdx/backends/lwjgl/audio/Opus.kt
+++ /dev/null
@@ -1,14 +0,0 @@
-package net.torvald.gdx.backends.lwjgl.audio
-
-import com.badlogic.gdx.backends.lwjgl.audio.OggInputStream
-import com.badlogic.gdx.backends.lwjgl.audio.OpenALAudio
-import com.badlogic.gdx.backends.lwjgl.audio.OpenALMusic
-import com.badlogic.gdx.backends.lwjgl.audio.OpenALSound
-import com.badlogic.gdx.files.FileHandle
-import com.badlogic.gdx.utils.StreamUtils
-import java.io.ByteArrayOutputStream
-
-/**
- * Created by minjaesong on 2017-06-26.
- */
-
diff --git a/src/net/torvald/gdx/backends/lwjgl/audio/OpusInputStream.java b/src/net/torvald/gdx/backends/lwjgl/audio/OpusInputStream.java
deleted file mode 100644
index a87f20edc..000000000
--- a/src/net/torvald/gdx/backends/lwjgl/audio/OpusInputStream.java
+++ /dev/null
@@ -1,60 +0,0 @@
-package net.torvald.gdx.backends.lwjgl.audio;
-
-import org.jetbrains.annotations.NotNull;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * Created by minjaesong on 2017-06-26.
- */
-public class OpusInputStream extends InputStream {
-    public OpusInputStream() {
-        super();
-    }
-
-    @Override
-    public int read(@NotNull byte[] b) throws IOException {
-        return super.read(b);
-    }
-
-    @Override
-    public int read(@NotNull byte[] b, int off, int len) throws IOException {
-        return super.read(b, off, len);
-    }
-
-    @Override
-    public long skip(long n) throws IOException {
-        return super.skip(n);
-    }
-
-    @Override
-    public int available() throws IOException {
-        return super.available();
-    }
-
-    @Override
-    public void close() throws IOException {
-        super.close();
-    }
-
-    @Override
-    public synchronized void mark(int readlimit) {
-        super.mark(readlimit);
-    }
-
-    @Override
-    public synchronized void reset() throws IOException {
-        super.reset();
-    }
-
-    @Override
-    public boolean markSupported() {
-        return super.markSupported();
-    }
-
-    @Override
-    public int read() throws IOException {
-        return 0;
-    }
-}
diff --git a/src/net/torvald/terrarum/tests/TestWorldTime.kt b/src/net/torvald/terrarum/tests/TestWorldTime.kt
index 0eb2ec955..71b3afba9 100644
--- a/src/net/torvald/terrarum/tests/TestWorldTime.kt
+++ b/src/net/torvald/terrarum/tests/TestWorldTime.kt
@@ -1,6 +1,7 @@
 package net.torvald.terrarum.tests
 
 import net.torvald.terrarum.modulebasegame.gameworld.WorldTime
+//import org.junit.Test
 
 /**
  * Created by minjaesong on 2018-12-02.
@@ -11,10 +12,26 @@ class TestWorldTime {
 
     //@Test
     fun testEndOfYear() {
-        repeat(3) {
-            println(time.getShortTime())
+        repeat(5) {
+            println(time.getFormattedTime())
+            time.addTime(1)
+        }
+
+        println()
+        time.addTime(86400 - 5)
+
+        repeat(5) {
+            println(time.getFormattedTime())
             time.addTime(1)
         }
     }
 
+
+
+
+}
+
+
+fun main(args: Array<String>) {
+    TestWorldTime().testEndOfYear()
 }
\ No newline at end of file
diff --git a/terrarum.iml b/terrarum.iml
index 47dd18719..a872860e4 100644
--- a/terrarum.iml
+++ b/terrarum.iml
@@ -16,7 +16,7 @@
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/net/torvald/terrarum/tests" isTestSource="true" />
     </content>
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="11" jdkType="JavaSDK" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
     <orderEntry type="library" name="lib" level="project" />