diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index d6261b4..2e3870b 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -21,6 +21,9 @@ jobs:
       with:
         java-version: '11'
         distribution: 'adopt'
+    - name: Install required tools
+      run: |
+       sudo bash required.sh
     - name: maven-settings
       uses: s4u/maven-settings-action@v2
       with:
@@ -32,5 +35,5 @@ jobs:
     - name: Upload Maven build artifact
       uses: actions/upload-artifact@v2
       with:
-        name: lilypond-converter-0.1.jar
-        path: /home/runner/work/lilypond-converter/lilypond-converter/target/lilypond-converter-0.1.jar
+        name: artifact
+        path: /home/runner/work/lilypond-converter/lilypond-converter/target/lilypond-converter-*.jar
diff --git a/.gitignore b/.gitignore
index b9daa88..6f1f632 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,5 @@
 !*.ent
 !*.xsd
 !*.yml
+!test-input.*.zip
+!required.sh
diff --git a/pom.xml b/pom.xml
index f6d0b10..034e16d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,6 +39,13 @@
         </developer>
     </developers>
     <dependencies>
+        <!-- https://mvnrepository.com/artifact/junit/junit -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>pl.psnc.dl.ege</groupId>
             <artifactId>ege-framework</artifactId>
@@ -65,7 +72,7 @@
 	</repositories>  
 <distributionManagement>
    <repository>
-     <id>github</id>
+     <id>githubedirom</id>
      <name>GitHub Edirom Apache Maven Packages</name>
      <url>https://maven.pkg.github.com/edirom/lilypond-converter</url>
    </repository>
diff --git a/required.sh b/required.sh
new file mode 100644
index 0000000..8356feb
--- /dev/null
+++ b/required.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+# installs lilypond into /usr/local/lilypond and /usr/local/bin as shortcut
+curl -o /tmp/lilypond.sh https://lilypond.org/download/binaries/linux-64/lilypond-2.20.0-1.linux-64.sh
+chmod a+x /tmp/lilypond.sh && /tmp/lilypond.sh --batch
diff --git a/src/main/java/de/edirom/meigarage/lilypond/LilyPondConverter.java b/src/main/java/de/edirom/meigarage/lilypond/LilyPondConverter.java
index e029c1c..f869b21 100644
--- a/src/main/java/de/edirom/meigarage/lilypond/LilyPondConverter.java
+++ b/src/main/java/de/edirom/meigarage/lilypond/LilyPondConverter.java
@@ -27,8 +27,12 @@ public class LilyPondConverter implements Converter {
 
     protected static final String LILYPOND_VERSION = "2.20.0";
 
+    public void convert(InputStream inputStream, OutputStream outputStream, ConversionActionArguments conversionDataTypes) throws ConverterException, IOException{
+        convert(inputStream,outputStream,conversionDataTypes, null);
+    }
+
     public void convert(InputStream inputStream, OutputStream outputStream,
-                        ConversionActionArguments conversionDataTypes)
+                        ConversionActionArguments conversionDataTypes, String tempDir)
             throws ConverterException, IOException {
 
         boolean found = false;
@@ -44,7 +48,7 @@ public void convert(InputStream inputStream, OutputStream outputStream,
                         + conversionDataTypes.getOutputType().toString()
                         + " WITH profile " + profile );
                 convertDocument(inputStream, outputStream, cadt.getInputType(), cadt.getOutputType(),
-                        cadt.getProperties());
+                        cadt.getProperties(), tempDir);
                 found = true;
             }
         }
@@ -59,7 +63,7 @@ public void convert(InputStream inputStream, OutputStream outputStream,
      * Prepares transformation : based on MIME type.
      */
     private void convertDocument(InputStream inputStream, OutputStream outputStream,
-                                 DataType fromDataType, DataType toDataType, Map<String, String> properties) throws IOException,
+                                 DataType fromDataType, DataType toDataType, Map<String, String> properties, String tempDir) throws IOException,
             ConverterException {
 
         // LilyPond to PDF
@@ -67,7 +71,7 @@ private void convertDocument(InputStream inputStream, OutputStream outputStream,
                 toDataType.getFormat().equals(Conversion.LILYPONDTOPDF.getOFormatId())) {
 
             properties.put("extension", "pdf");
-            performLilyPondTransformation(inputStream, outputStream, "pdf", properties);
+            performLilyPondTransformation(inputStream, outputStream, "pdf", properties, tempDir);
 
         }
         // LilyPond to PNG
@@ -75,17 +79,17 @@ else if(fromDataType.getFormat().equals(Conversion.LILYPONDTOPNG.getIFormatId())
                 toDataType.getFormat().equals(Conversion.LILYPONDTOPNG.getOFormatId())) {
 
             properties.put("extension", "png");
-            performLilyPondTransformation(inputStream, outputStream, "png", properties);
+            performLilyPondTransformation(inputStream, outputStream, "png", properties, tempDir);
         }
     }
 
     private void performLilyPondTransformation(InputStream inputStream, OutputStream outputStream, String format,
-                                               Map<String, String> properties) throws IOException, ConverterException {
+                                               Map<String, String> properties, String tempDir) throws IOException, ConverterException {
 
         File inTmpDir = null;
         File outTempDir = null;
         try {
-            inTmpDir = prepareTempDir();
+            inTmpDir = prepareTempDir(tempDir);
             ior.decompressStream(inputStream, inTmpDir);
             // avoid processing files ending in .bin
             File inputFile = searchForData(inTmpDir, "^.*(?<!bin)$");
@@ -93,12 +97,20 @@ private void performLilyPondTransformation(InputStream inputStream, OutputStream
                 String newFileName = inputFile.getAbsolutePath().substring(0, inputFile.getAbsolutePath().lastIndexOf(".")) + ".ly";
                 inputFile.renameTo(new File(newFileName));
 
-                outTempDir = prepareTempDir();
+                outTempDir = prepareTempDir(tempDir);
 
                 ProcessBuilder builder = new ProcessBuilder();
-                builder.command("sh", "-c", "lilypond --output=" + outTempDir +  " --format=" + format + " " + newFileName);
+                String command = "lilypond --output=" + outTempDir.getAbsolutePath() +  " --formats=" + format + " " + newFileName;
+                LOGGER.debug(command);
+                builder.command("sh", "-c", command);
+
                 builder.directory(inTmpDir);
+                builder.redirectErrorStream(true);
                 Process process = builder.start();
+                BufferedReader inStreamReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+                while (inStreamReader.readLine() != null) {
+                    LOGGER.debug(inStreamReader.readLine());
+                }
 
                 LilyPondRunner runner = new LilyPondRunner(process.getInputStream());
                 Executors.newSingleThreadExecutor().submit(runner);
@@ -121,10 +133,19 @@ private void performLilyPondTransformation(InputStream inputStream, OutputStream
     }
 
     private File prepareTempDir() {
+        return prepareTempDir(null);
+    }
+
+    private File prepareTempDir(String tempDir) {
         File inTempDir = null;
         String uid = UUID.randomUUID().toString();
-        inTempDir = new File(EGEConstants.TEMP_PATH + File.separator + uid
-                + File.separator);
+        if(tempDir!=null){
+            inTempDir = new File(tempDir + File.separator + uid
+                    + File.separator);
+        } else {
+            inTempDir = new File(EGEConstants.TEMP_PATH + File.separator + uid
+                    + File.separator);
+        }
         inTempDir.mkdir();
         return inTempDir;
     }
diff --git a/src/test/java/de/edirom/meigarage/lilypond/LilyPondConverterTest.java b/src/test/java/de/edirom/meigarage/lilypond/LilyPondConverterTest.java
new file mode 100644
index 0000000..7287022
--- /dev/null
+++ b/src/test/java/de/edirom/meigarage/lilypond/LilyPondConverterTest.java
@@ -0,0 +1,51 @@
+package de.edirom.meigarage.lilypond;
+
+import pl.psnc.dl.ege.configuration.EGEConfigurationManager;
+import pl.psnc.dl.ege.exception.ConverterException;
+import pl.psnc.dl.ege.types.ConversionActionArguments;
+import pl.psnc.dl.ege.types.DataType;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import static org.junit.Assert.*;
+
+public class LilyPondConverterTest {
+    private LilyPondConverter converter;
+
+    @org.junit.Before
+    public void setUp() throws Exception {
+        converter = new LilyPondConverter();
+    }
+
+    @org.junit.After
+    public void tearDown() throws Exception {
+        converter = null;
+    }
+
+    @org.junit.Test
+    public void convert() throws IOException, ConverterException {
+        InputStream is = new FileInputStream("src/test/resources/test-input.ly.zip");
+        OutputStream os = new FileOutputStream("src/test/resources/test-output.png.zip");
+        DataType inputType = new DataType("lilypond","text/x-lilypond");
+        DataType outputType = new DataType("png","image/png");
+        ConversionActionArguments conversionActionArguments = new ConversionActionArguments(inputType, outputType, null);
+        String tempDir = "src/test/temp";
+        converter.convert(is, os, conversionActionArguments, tempDir);
+        assertNotNull(new File("src/test/resources/test-output.png.zip"));
+        InputStream isout = new FileInputStream("src/test/resources/test-output.png.zip");
+        EGEConfigurationManager.getInstance().getStandardIOResolver().decompressStream(isout, new File("src/test/resources/test-output.png"));
+        //System.out.println(new String(Files. readAllBytes(Paths.get("src/test/resources/test-output.txt/result.txt")), "UTF-8"));
+        assertNotEquals("", new String(Files.readAllBytes(Paths.get("src/test/resources/test-output.png/test.png")), "UTF-8"));
+        is.close();
+        os.close();
+        isout.close();
+    }
+
+    @org.junit.Test
+    public void getPossibleConversions() {
+        assertNotNull(converter.getPossibleConversions());
+        System.out.println(converter.getPossibleConversions());
+    }
+}
\ No newline at end of file
diff --git a/src/test/resources/test-input.ly.zip b/src/test/resources/test-input.ly.zip
new file mode 100644
index 0000000..482369e
Binary files /dev/null and b/src/test/resources/test-input.ly.zip differ