querydsl-scala/src/main/scala/com/mysema/query/scala/Expressions.scala

@@ -314,7 +314,7 @@ trait NumberExpression[T <: Number with Comparable[T]] extends ComparableExpress
 
 }
 
-trait BooleanFunctions {
+abstract trait BooleanFunctions {
     
   def and(right: Predicate): BooleanExpression;
 

querydsl-scala/src/test/scala/com/mysema/query/scala/AliasTest.scala

@@ -101,8 +101,7 @@ class AliasTest {
   
   @Test
   def Number_Comparison2 {
-    val predicate: Predicate = person.scalaInt < 5;  
-    assertEquals("person.scalaInt < 5", predicate);
+    assertEquals("person.scalaInt < 5", person.scalaInt < 5);
     assertEquals("person.javaInt < 5", person.javaInt < 5);
     assertEquals("person.javaInt > 5", person.javaInt > 5);
     assertEquals("person.javaInt <= 5", person.javaInt <= 5);
@@ -196,7 +195,7 @@ class AliasTest {
 
   @Test
   def Array_Size {
-    val num: NumberExpression[Integer] = person.array size();   
+    val num: NumberExpression[Integer] = person.array size;   
     assertEquals("size(person.array)", num);
   }
 

querydsl-scala/src/test/scala/com/mysema/testutil/ImplicitsTest.scala

@@ -0,0 +1,24 @@
+package com.mysema.testutil
+
+import org.junit.{ Test, Before, After };
+import org.junit.Assert._
+
+
+class ImplicitsTest {
+
+    implicit def toStringWrapper(str: String) = new StringWrapper(str);
+
+    @Test
+    def test(){
+        val res1: Predicate = "str" startsWith "other";
+    }
+    
+}
+
+class StringWrapper(str: String){
+    
+    def startsWith(other: String): Predicate = null;
+    
+}
+
+trait Predicate