Add class to existing lexical scoping tests

test/mjsunit/es6/block-let-semantics.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 52 matching lines @@
 TestAll('let x = ++x');
 TestAll('const x = x + 1');
 
 // Use before initialization in prior statement.
 TestAll('x + 1; let x;');
 TestAll('x = 1; let x;');
 TestAll('x += 1; let x;');
 TestAll('++x; let x;');
 TestAll('x++; let x;');
 TestAll('let y = x; const x = 1;');
+TestAll('let y = x; class x {}');
 
 TestAll('f(); let x; function f() { return x + 1; }');
 TestAll('f(); let x; function f() { x = 1; }');
 TestAll('f(); let x; function f() { x += 1; }');
 TestAll('f(); let x; function f() { ++x; }');
 TestAll('f(); let x; function f() { x++; }');
 TestAll('f(); const x = 1; function f() { return x; }');
+TestAll('f(); class x { }; function f() { return x; }');
 
 TestAll('f()(); let x; function f() { return function() { return x + 1; } }');
 TestAll('f()(); let x; function f() { return function() { x = 1; } }');
 TestAll('f()(); let x; function f() { return function() { x += 1; } }');
 TestAll('f()(); let x; function f() { return function() { ++x; } }');
 TestAll('f()(); let x; function f() { return function() { x++; } }');
 TestAll('f()(); const x = 1; function f() { return function() { return x; } }');
+TestAll('f()(); class x { }; function f() { return function() { return x; } }');
 
-for (var kw of ['let', 'const']) {
+for (var kw of ['let x = 2', 'const x = 2', 'class x { }']) {
   // Use before initialization with a dynamic lookup.
-  TestAll(`eval("x"); ${kw} x = 2;`);
-  TestAll(`eval("x + 1;"); ${kw} x = 2;`);
-  TestAll(`eval("x = 1;"); ${kw} x = 2;`);
-  TestAll(`eval("x += 1;"); ${kw} x = 2;`);
-  TestAll(`eval("++x;"); ${kw} x = 2;`);
-  TestAll(`eval("x++;"); ${kw} x = 2;`);
+  TestAll(`eval("x"); ${kw};`);
+  TestAll(`eval("x + 1;"); ${kw};`);
+  TestAll(`eval("x = 1;"); ${kw};`);
+  TestAll(`eval("x += 1;"); ${kw};`);
+  TestAll(`eval("++x;"); ${kw};`);
+  TestAll(`eval("x++;"); ${kw};`);
 
   // Use before initialization with check for eval-shadowed bindings.
-  TestAll(`function f() { eval("var y = 2;"); x + 1; }; f(); ${kw} x = 2;`);
-  TestAll(`function f() { eval("var y = 2;"); x = 1; }; f(); ${kw} x = 2;`);
-  TestAll(`function f() { eval("var y = 2;"); x += 1; }; f(); ${kw} x = 2;`);
-  TestAll(`function f() { eval("var y = 2;"); ++x; }; f(); ${kw} x = 2;`);
-  TestAll(`function f() { eval("var y = 2;"); x++; }; f(); ${kw} x = 2;`);
+  TestAll(`function f() { eval("var y = 2;"); x + 1; }; f(); ${kw};`);
+  TestAll(`function f() { eval("var y = 2;"); x = 1; }; f(); ${kw};`);
+  TestAll(`function f() { eval("var y = 2;"); x += 1; }; f(); ${kw};`);
+  TestAll(`function f() { eval("var y = 2;"); ++x; }; f(); ${kw};`);
+  TestAll(`function f() { eval("var y = 2;"); x++; }; f(); ${kw};`);
 }
 
 // Test that variables introduced by function declarations are created and
 // initialized upon entering a function / block scope.
 function f() {
   {
     assertEquals(2, g1());
     assertEquals(2, eval("g1()"));
 
     // block scoped function declaration
@@ skipping 67 matching lines @@
     }
     eval("1 + 1");
     return x + inner();
   }
 
   let x = 1;
   return middle();
 }
 
 assertEquals(2, outer());