Fix tests for line separator

Author: gamma

src/com/inet/lib/less/LessException.java

@@ -9,10 +9,10 @@
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -27,7 +27,6 @@
 package com.inet.lib.less;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 
 /**
@@ -49,7 +48,7 @@ public class LessException extends RuntimeException {
 
     /**
      * Constructs a new runtime exception with the specified cause.
-     * 
+     *
      * @param cause
      *            the cause
      */
@@ -59,7 +58,7 @@ public class LessException extends RuntimeException {
 
     /**
      * Constructs a new runtime exception with the specified detail message and cause.
-     * 
+     *
      * @param message
      *            the detail message.
      * @param cause
@@ -106,7 +105,7 @@ public String getOriginalMessage() {
     public String getMessage() {
         StringBuilder builder = new StringBuilder( super.getMessage() );
         for( LessFilePosition pos : positions ) {
-            builder.append( "\n\t on line " ).append( pos.getLine() ).append( ", column " ).append( pos.getColumn() );
+            builder.append( System.lineSeparator() ).append( " on line " ).append( pos.getLine() ).append( ", column " ).append( pos.getColumn() );
             if( pos.getFilename() != null ) {
                 builder.append( ", file " ).append( pos.getFilename() );
             }

test/com/inet/lib/less/ErrorTest.java

@@ -1,8 +1,9 @@
 package com.inet.lib.less;
 
-import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
-import static org.junit.Assert.*;
+import org.junit.Test;
 
 public class ErrorTest {
 
@@ -12,7 +13,7 @@ private void assertLessException( String less, String expectedErrorMessage ) {
             fail( "LessException expected" );
         } catch( LessException lex ) {
             String message = lex.getMessage();
-            assertEquals( expectedErrorMessage, message.substring( 0, message.indexOf( '\n' ) ) );
+            assertEquals( expectedErrorMessage, message.substring( 0, message.indexOf( System.lineSeparator() ) ) );
         }
     }
     @Test