diff --git a/test/de/inetsoftware/jwebassembly/math/MathOperations.java b/test/de/inetsoftware/jwebassembly/math/MathOperations.java
index 1423d04..fb74631 100644
--- a/test/de/inetsoftware/jwebassembly/math/MathOperations.java
+++ b/test/de/inetsoftware/jwebassembly/math/MathOperations.java
@@ -53,6 +53,16 @@ public class MathOperations {
         rule.test( script, "intConst" );
     }
 
+    @Test
+    public void floatConst() {
+        rule.test( script, "floatConst" );
+    }
+
+    @Test
+    public void doubleConst() {
+        rule.test( script, "doubleConst" );
+    }
+
     @Test
     public void plus() {
         rule.test( script, "plus", 1, 3 );
@@ -65,6 +75,16 @@ public class MathOperations {
             return 42;
         }
 
+        @Export
+        static float floatConst() {
+            return 42.5F;
+        }
+
+        @Export
+        static double doubleConst() {
+            return 42.5;
+        }
+
         @Export
         static int plus( int a, int b ) {
             return a + b;