Add class to existing lexical scoping tests

test/mjsunit/es6/block-conflicts.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Test for conflicting variable bindings.
 
 "use strict";
 
 function CheckException(e) {
   var string = e.toString();
@@ skipping 61 matching lines @@
                  "let x = 0;",
                  "let x = undefined;",
                  "let x = function() {};",
                  "let x, y;",
                  "let y, x;",
                  "const x = 0;",
                  "const x = undefined;",
                  "const x = function() {};",
                  "const x = 2, y = 3;",
                  "const y = 4, x = 5;",
+                 "class x { }",
                  ];
+function forCompatible(bind) {
+  return !bind.startsWith('class');
+}
 var varbinds = [ "var x;",
                  "var x = 0;",
                  "var x = undefined;",
                  "var x = function() {};",
                  "var x, y;",
                  "var y, x;",
                  ];
 var funbind = "function x() {}";
 
 for (var l = 0; l < letbinds.length; ++l) {
   // Test conflicting let/var bindings.
   for (var v = 0; v < varbinds.length; ++v) {
     // Same level.
     TestConflict(letbinds[l] + varbinds[v]);
     TestConflict(varbinds[v] + letbinds[l]);
     // Different level.
     TestConflict(letbinds[l] + '{' + varbinds[v] + '}');
     TestConflict('{' + varbinds[v] +'}' + letbinds[l]);
     TestNoConflict(varbinds[v] + '{' + letbinds[l] + '}');
     TestNoConflict('{' + letbinds[l] + '}' + varbinds[v]);
     // For loop.
-    TestConflict('for (' + letbinds[l] + '0;) {' + varbinds[v] + '}');
+    if (forCompatible(letbinds[l])) {
+      TestConflict('for (' + letbinds[l] + '0;) {' + varbinds[v] + '}');
+    }
     TestNoConflict('for (' + varbinds[v] + '0;) {' + letbinds[l] + '}');
   }
 
   // Test conflicting let/let bindings.
   for (var k = 0; k < letbinds.length; ++k) {
     // Same level.
     TestConflict(letbinds[l] + letbinds[k]);
     TestConflict(letbinds[k] + letbinds[l]);
     // Different level.
     TestNoConflict(letbinds[l] + '{ ' + letbinds[k] + '}');
     TestNoConflict('{' + letbinds[k] +'} ' + letbinds[l]);
     // For loop.
-    TestNoConflict('for (' + letbinds[l] + '0;) {' + letbinds[k] + '}');
-    TestNoConflict('for (' + letbinds[k] + '0;) {' + letbinds[l] + '}');
+    if (forCompatible(letbinds[l])) {
+      TestNoConflict('for (' + letbinds[l] + '0;) {' + letbinds[k] + '}');
+    }
+    if (forCompatible(letbinds[k])) {
+      TestNoConflict('for (' + letbinds[k] + '0;) {' + letbinds[l] + '}');
+    }
   }
 
   // Test conflicting function/let bindings.
   // Same level.
   TestConflict(letbinds[l] + funbind);
   TestConflict(funbind + letbinds[l]);
   // Different level.
   TestNoConflict(letbinds[l] + '{' + funbind + '}');
   TestNoConflict('{' + funbind + '}' + letbinds[l]);
   TestNoConflict(funbind + '{' + letbinds[l] + '}');
   TestNoConflict('{' + letbinds[l] + '}' + funbind);
   // For loop.
-  TestNoConflict('for (' + letbinds[l] + '0;) {' + funbind + '}');
+  if (forCompatible(letbinds[l])) {
+    TestNoConflict('for (' + letbinds[l] + '0;) {' + funbind + '}');
+  }
 
   // Test conflicting parameter/let bindings.
   TestConflict('(function(x) {' + letbinds[l] + '})();');
 }
 
 // Test conflicting function/var bindings.
 for (var v = 0; v < varbinds.length; ++v) {
   // Same level.
   TestLocalConflict(varbinds[v] + funbind);
   TestLocalConflict(funbind + varbinds[v]);
@@ skipping 14 matching lines @@
 // Test conflicting parameter/var bindings.
 for (var v = 0; v < varbinds.length; ++v) {
   TestNoConflict('(function (x) {' + varbinds[v] + '})();');
 }
 
 // Test conflicting catch/function bindings.
 TestNoConflict('try {} catch(x) {' + funbind + '}');
 
 // Test conflicting parameter/function bindings.
 TestNoConflict('(function (x) {' + funbind + '})();');