Index: src/test/org/codehaus/groovy/ast/MethodCallExpressionTest.java
===================================================================
--- src/test/org/codehaus/groovy/ast/MethodCallExpressionTest.java	(Revision 0)
+++ src/test/org/codehaus/groovy/ast/MethodCallExpressionTest.java	(Revision 866)
@@ -0,0 +1,73 @@
+package org.codehaus.groovy.ast;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.codehaus.groovy.ast.expr.MethodCallExpression;
+import org.codehaus.groovy.control.Phases;
+import org.codehaus.groovy.control.SourceUnit;
+
+
+/**
+ * Tests the MethodCallExpression
+ * 
+ * @author <a href="mailto:martin.kempf@gmail.com">Martin Kempf</a>
+ *
+ */
+
+public class MethodCallExpressionTest extends ASTTest {
+	
+	private boolean isImplicitThis;
+	
+	/*
+	 * To make sure the MethodCallExpression is visited and we do not test against
+	 * the default value of isImplicitThis
+	 */
+	private boolean visited; 
+	
+	private List defaultScriptMethods = new ArrayList();
+	
+	private ClassCodeVisitorSupport MethodCallVisitor = new ClassCodeVisitorSupport() {
+		
+		public void visitMethodCallExpression(MethodCallExpression methodCall) {
+			if (!defaultScriptMethods.contains(methodCall.getMethodAsString())) {
+				visited = true;
+				isImplicitThis = methodCall.isImplicitThis();
+			}
+		}
+		
+	    protected SourceUnit getSourceUnit() {
+	        return null;
+	    }
+	};
+	
+	public MethodCallExpressionTest() {
+		defaultScriptMethods.add("setBinding");
+		defaultScriptMethods.add("runScript");
+	}
+	
+    protected void setUp() throws Exception {
+    	visited = false;
+    }
+	
+	public void testIsImplicitThisOnObject() {
+		ModuleNode root = getAST("string.substring(2)", Phases.SEMANTIC_ANALYSIS);
+		MethodCallVisitor.visitClass((ClassNode)root.getClasses().get(0));
+		assertTrue(visited);
+		assertFalse(isImplicitThis);
+	}
+	
+	public void testIsImplicitThisExplicitThis() {
+		ModuleNode root = getAST("this.println()", Phases.SEMANTIC_ANALYSIS);
+		MethodCallVisitor.visitClass((ClassNode)root.getClasses().get(0));
+		assertTrue(visited);
+		assertFalse(isImplicitThis);
+	}
+	
+	public void testIsImplicitThisNoObject() {
+		ModuleNode root = getAST("println()", Phases.SEMANTIC_ANALYSIS);
+		MethodCallVisitor.visitClass((ClassNode)root.getClasses().get(0));
+		assertTrue(visited);
+		assertTrue(isImplicitThis);
+	}
+}

Index: src/test/JavaSourceCodehausPackagesSuite.java
===================================================================
--- src/test/JavaSourceCodehausPackagesSuite.java	(Revision 687)
+++ src/test/JavaSourceCodehausPackagesSuite.java	(Revision 866)
@@ -8,6 +8,8 @@
 import org.codehaus.groovy.antlr.SourceBufferTest;
 import org.codehaus.groovy.antlr.treewalker.*;
 import org.codehaus.groovy.ast.ClassNodeTest;
+import org.codehaus.groovy.ast.LineColumnCheckTestSuite;
+import org.codehaus.groovy.ast.MethodCallExpressionTest;
 import org.codehaus.groovy.ast.MethodNodeTest;
 import org.codehaus.groovy.ast.ModuleNodeTest;
 import org.codehaus.groovy.ast.VariableExpressionTest;
@@ -88,6 +90,8 @@
         suite.addTestSuite(CompilerConfigurationTest.class);
         suite.addTestSuite(MethodNodeTest.class);
         suite.addTestSuite(VariableExpressionTest.class);
+        suite.addTest(LineColumnCheckTestSuite.suite());
+        suite.addTestSuite(MethodCallExpressionTest.class);
         return suite;
     }
 }