sbabcoc commented on code in PR #517:
URL: https://github.com/apache/maven-surefire/pull/517#discussion_r851697867


##########
surefire-providers/surefire-testng/src/main/java/org/apache/maven/surefire/testng/conf/TestNG740Configurator.java:
##########
@@ -37,33 +36,77 @@
  *
  * @since 3.0.0-M6
  */
-public class TestNG740Configurator extends TestNG60Configurator
+public class TestNG740Configurator
+    extends TestNG60Configurator
 {
+    /**
+     * Convert and apply the value of the [threadcount] option.
+     * 
+     * @param suite TestNG {@link XmlSuite} object
+     * @param options Surefire plugin configuration options
+     * @throws TestSetFailedException if unable to convert specified 
[threadcount] setting
+     */
     @Override
-    public void configure( XmlSuite suite, Map<String, String> options )
+    protected void configureThreadCount( XmlSuite suite, Map<String, String> 
options )
         throws TestSetFailedException
     {
-        String threadCountAsString = options.get( THREADCOUNT_PROP );
-        int threadCount = threadCountAsString == null ? 1 : parseInt( 
threadCountAsString );
-        suite.setThreadCount( threadCount );
-
-        String parallel = options.get( PARALLEL_PROP );
-        if ( parallel != null )
+        String threadCount = options.get( THREADCOUNT_PROP );
+        // if [threadcount] spec'd
+        if ( threadCount != null )
         {
-            if ( !"methods".equalsIgnoreCase( parallel ) && 
!"classes".equalsIgnoreCase( parallel ) )
+            try
             {
-                throw new TestSetFailedException( "Unsupported TestNG parallel 
setting: "
-                    + parallel + " ( only METHODS or CLASSES supported )" );
+                // convert and apply [threadcount] setting
+                suite.setThreadCount( Integer.parseInt( threadCount ) );

Review Comment:
   Why would we override the default value provided by TestNG? What's the 
benefit of specifying parallel execution if the thread count is 1?



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