Version 3.6.5

test/mjsunit/harmony/block-let-declaration.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 29 matching lines @@
 }
 
 assertEquals(undefined, x);
 assertEquals(2,y);
 
 if (true) {
   let y;
   assertEquals(undefined, y);
 }
 
+// Invalid declarations are early errors in harmony mode and thus should trigger
+// an exception in eval code during parsing, before even compiling or executing
+// the code. Thus the generated function is not called here.
 function TestLocalThrows(str, expect) {
-  assertThrows("(function(){" + str + "})()", expect);
+  assertThrows("(function(){" + str + "})", expect);
 }
 
 function TestLocalDoesNotThrow(str) {
   assertDoesNotThrow("(function(){" + str + "})()");
 }
 
-// Unprotected statement
+// Test let declarations statement positions.
 TestLocalThrows("if (true) let x;", SyntaxError);
+TestLocalThrows("if (true) {} else let x;", SyntaxError);
 TestLocalThrows("do let x; while (false)", SyntaxError);
 TestLocalThrows("while (false) let x;", SyntaxError);
+TestLocalThrows("label: let x;", SyntaxError);
+TestLocalThrows("for (;false;) let x;", SyntaxError);
+TestLocalThrows("switch (true) { case true: let x; }", SyntaxError);
+TestLocalThrows("switch (true) { default: let x; }", SyntaxError);
 
+// Test var declarations statement positions.
 TestLocalDoesNotThrow("if (true) var x;");
+TestLocalDoesNotThrow("if (true) {} else var x;");
 TestLocalDoesNotThrow("do var x; while (false)");
 TestLocalDoesNotThrow("while (false) var x;");
+TestLocalDoesNotThrow("label: var x;");
+TestLocalDoesNotThrow("for (;false;) var x;");
+TestLocalDoesNotThrow("switch (true) { case true: var x; }");
+TestLocalDoesNotThrow("switch (true) { default: var x; }");
+
+// Test function declarations in source element and
+// non-strict statement positions.
+function f() {
+  // Non-strict source element positions.
+  function g0() {
+    "use strict";
+    // Strict source element positions.
+    function h() { }
+    {
+      function h1() { }
+    }
+  }
+  {
+    function g1() { }
+  }
+  // Non-strict statement positions.
+  if (true) function g2() { }
+  if (true) {} else function g3() { }
+  do function g4() { } while (false)
+  while (false) function g5() { }
+  label: function g6() { }
+  for (;false;) function g7() { }
+  switch (true) { case true: function g8() { } }
+  switch (true) { default: function g9() { } }
+}
+f();
+
+// Test function declarations in statement position in strict mode.
+TestLocalThrows("function f() { 'use strict'; if (true) function g() {}", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; if (true) {} else function g() {}", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; do function g() {} while (false)", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; while (false) function g() {}", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; label: function g() {}", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; for (;false;) function g() {}", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; switch (true) { case true: function g() {} }", SyntaxError);
+TestLocalThrows("function f() { 'use strict'; switch (true) { default: function g() {} }", SyntaxError);