diff --git a/test/de/inetsoftware/jwebassembly/SampleCompileTest.java b/test/de/inetsoftware/jwebassembly/SampleCompileTest.java
index 392af27..42e0b61 100644
--- a/test/de/inetsoftware/jwebassembly/SampleCompileTest.java
+++ b/test/de/inetsoftware/jwebassembly/SampleCompileTest.java
@@ -1,79 +1,93 @@
-/*
- * Copyright 2017 Volker Berlin (i-net software)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package de.inetsoftware.jwebassembly;
-
-import static org.junit.Assert.assertEquals;
-
-import java.io.File;
-import java.net.URL;
-import java.nio.file.Files;
-import java.util.ArrayList;
-import java.util.List;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.junit.runners.Parameterized;
-import org.junit.runners.Parameterized.Parameters;
-
-/**
- * Test to compile a list of single sample files.
- * 
- * @author Volker Berlin
- *
- */
-@RunWith( Parameterized.class )
-public class SampleCompileTest {
-
-    private final String testName;
-    private final File classFile;
-
-    public SampleCompileTest( String testName, File classFile ) {
-        this.testName = testName;
-        this.classFile = classFile;
-    }
-
-    @Parameters( name = "{0}" )
-    public static List<Object[]> params() throws Exception {
-        ArrayList<Object[]> params = new ArrayList<>();
-        URL url = SampleCompileTest.class.getResource( "samples" );
-        File dir = new File( url.toURI() );
-        int baseLength = dir.getPath().length() + 1;
-        params( params, dir, baseLength );
-        return params;
-    }
-
-    private static void params( ArrayList<Object[]> params, File dir, int baseLength ) {
-        for( File file : dir.listFiles() ) {
-            if( file.getName().endsWith( ".class" ) ) {
-                String path = file.getPath();
-                params.add( new Object[] { path.substring( baseLength, path.length() - 6 ), file } );
-            } else if( file.isDirectory() ) {
-                params( params, file, baseLength );
-            }
-        }
-    }
-
-    @Test
-    public void compileToText() throws Exception {
-        URL url = SampleCompileTest.class.getResource( "samples/" + testName + ".wat" );
-        File watFile = new File( url.toURI() );
-        String expected = new String( Files.readAllBytes( watFile.toPath() ) );
-        JWebAssembly webAsm = new JWebAssembly();
-        webAsm.addFile( classFile );
-        String text = webAsm.compileToText();
-        assertEquals( expected, text );
-    }
-}
+/*
+ * Copyright 2017 Volker Berlin (i-net software)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.inetsoftware.jwebassembly;
+
+import static org.junit.Assert.*;
+
+import java.io.File;
+import java.net.URL;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+/**
+ * Test to compile a list of single sample files.
+ * 
+ * @author Volker Berlin
+ *
+ */
+@RunWith( Parameterized.class )
+public class SampleCompileTest {
+
+    private final String testName;
+    private final File classFile;
+
+    public SampleCompileTest( String testName, File classFile ) {
+        this.testName = testName;
+        this.classFile = classFile;
+    }
+
+    @Parameters( name = "{0}" )
+    public static List<Object[]> params() throws Exception {
+        ArrayList<Object[]> params = new ArrayList<>();
+        URL url = SampleCompileTest.class.getResource( "samples" );
+        File dir = new File( url.toURI() );
+        int baseLength = dir.getPath().length() + 1;
+        params( params, dir, baseLength );
+        return params;
+    }
+
+    private static void params( ArrayList<Object[]> params, File dir, int baseLength ) {
+        for( File file : dir.listFiles() ) {
+            if( file.getName().endsWith( ".class" ) ) {
+                String path = file.getPath();
+                params.add( new Object[] { path.substring( baseLength, path.length() - 6 ), file } );
+            } else if( file.isDirectory() ) {
+                params( params, file, baseLength );
+            }
+        }
+    }
+
+    @Test
+    public void compileToText() throws Exception {
+        URL url = SampleCompileTest.class.getResource( "samples/" + testName + ".wat" );
+        File watFile = new File( url.toURI() );
+        String expected = new String( Files.readAllBytes( watFile.toPath() ) );
+        JWebAssembly webAsm = new JWebAssembly();
+        webAsm.addFile( classFile );
+        String text = webAsm.compileToText();
+        assertEquals( expected, text );
+    }
+
+    @Test
+    public void compileToBinary() throws Exception {
+        URL url = SampleCompileTest.class.getResource( "samples/" + testName + ".wasm" );
+        File wasmFile = new File( url.toURI() );
+        byte[] expected = Files.readAllBytes( wasmFile.toPath() );
+        JWebAssembly webAsm = new JWebAssembly();
+        webAsm.addFile( classFile );
+        byte[] actual = webAsm.compileToBinary();
+        System.err.println(Arrays.toString( expected ));
+        System.err.println(Arrays.toString( actual ));
+        assertArrayEquals( expected, actual );
+    }
+}
diff --git a/test/de/inetsoftware/jwebassembly/samples/FunctionParameters.wasm b/test/de/inetsoftware/jwebassembly/samples/FunctionParameters.wasm
new file mode 100644
index 0000000..fba0778
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diff --git a/test/de/inetsoftware/jwebassembly/samples/basic/EmptyClass.wasm b/test/de/inetsoftware/jwebassembly/samples/basic/EmptyClass.wasm
new file mode 100644
index 0000000..d8fc92d
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