Add tests escaped/unescaped yield/await labels

test/annexB/language/statements/labeled/function-declaration.js

@@ -9,3 +9,4 @@ flags: [noStrict]
 ---*/
 label: function g() {}
 
+label1: label2: function f() {}

test/language/statements/labeled/value-await-module-escaped.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `await` is a reserved identifier in module code and may not be used as a label.
+info: |
+  Identifier : IdentifierName but not ReservedWord
+
+  It is a Syntax Error if the goal symbol of the syntactic grammar is Module and
+  the StringValue of IdentifierName is "await".
+negative:
+  phase: early
+  type: SyntaxError
+flags: [module]
+---*/
+
+aw\u0061it: 1;

test/language/statements/labeled/value-await-module.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `await` is a reserved identifier in module code and may not be used as a label.
+info: |
+  LabelIdentifier : await
+
+  It is a Syntax Error if the goal symbol of the syntactic grammar is Module.
+negative:
+  phase: early
+  type: SyntaxError
+flags: [module]
+---*/
+
+await: 1;

test/language/statements/labeled/value-await-non-module-escaped.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `await` is not a reserved identifier in non-module code and may be used as a label.
+info: |
+  Identifier : IdentifierName but not ReservedWord
+
+  It is a Syntax Error if the goal symbol of the syntactic grammar is Module and
+  the StringValue of IdentifierName is "await".
+---*/
+
+aw\u0061it: 1;

test/language/statements/labeled/value-await-non-module.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `await` is not a reserved identifier in non-module code and may be used as a label.
+info: |
+  LabelIdentifier : await
+
+  It is a Syntax Error if the goal symbol of the syntactic grammar is Module.
+---*/
+
+await: 1;

test/language/statements/labeled/value-yield-non-strict-escaped.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `yield` is not a reserved identifier in non-strict mode code and may be used as a label.
+flags: [noStrict]
+---*/
+
+yi\u0065ld: 1;

test/language/statements/labeled/value-yield-strict-escaped.js

+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-identifiers-static-semantics-early-errors
+description: >
+  `yield` is a reserved identifier in strict mode code and may not be used as a label.
+info: |
+  Identifier : IdentifierName but not ReservedWord
+
+  It is a Syntax Error if this phrase is contained in strict mode code and the
+  StringValue of IdentifierName is: "implements", "interface", "let", "package",
+  "private", "protected", "public", "static", or "yield".
+negative:
+  phase: early
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+yi\u0065ld: 1;