classfields: add tests for forbidden propertynames

src/class-fields/propname-constructor.case

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: Static class fields cannot have PropName 'constructor'
+info: |
+
+  // This test file tests the following early error:
+  Static Semantics: Early Errors
+
+    ClassElement : FieldDefinition;
+      It is a Syntax Error if PropName of FieldDefinition is "constructor".
+features: [class-fields]
+template: propname-error
+---*/
+
+//- propname
+constructor

src/class-fields/propname-error/cls-decl-computed-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/statements/class/fields-computed-name-
+name: computed
+info: |
+  Static Semantics: PropName
+  ...
+  ComputedPropertyName : [ AssignmentExpression ]
+    Return empty.
+---*/
+
+var x = "/*{ propname }*/";
+class C {
+  /*{ static }*/ [x];
+}
+
+var c = new C();
+
+assert.sameValue(c.hasOwnProperty("/*{ propname }*/"), true);

src/class-fields/propname-error/cls-decl-literal-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/statements/class/fields-literal-name-
+name: literal name
+negative:
+  type: SyntaxError
+  phase: early
+info: |
+  Static Semantics: PropName
+  LiteralPropertyName : IdentifierName
+    Return StringValue of IdentifierName.
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+class C {
+  /*{ static }*/ /*{ propname }*/;
+}

src/class-fields/propname-error/cls-decl-string-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/statements/class/fields-string-name-
+name: string name
+negative:
+  type: SyntaxError
+  phase: early
+info: |
+  Static Semantics: PropName
+  ...
+  LiteralPropertyName:StringLiteral
+    Return the String value whose code units are the SV of the StringLiteral.
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+class C {
+  /*{ static }*/ '/*{ propname }*/';
+}

src/class-fields/propname-error/cls-expr-computed-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/expressions/class/fields-computed-name-
+name: computed
+info: |
+  Static Semantics: PropName
+  ...
+  ComputedPropertyName : [ AssignmentExpression ]
+    Return empty.
+---*/
+
+var x = "/*{ propname }*/";
+var C = class {
+  /*{ static }*/ [x];
+}
+
+var c = new C();
+
+assert.sameValue(c.hasOwnProperty("/*{ propname }*/"), true);

src/class-fields/propname-error/cls-expr-literal-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/expressions/class/fields-literal-name-
+name: literal name
+negative:
+  type: SyntaxError
+  phase: early
+info: |
+  Static Semantics: PropName
+  LiteralPropertyName : IdentifierName
+    Return StringValue of IdentifierName.
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+var C = class {
+  /*{ static }*/ /*{ propname }*/;
+}

src/class-fields/propname-error/cls-expr-string-name.template

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-class-definitions-static-semantics-early-errors
+path: language/expressions/class/fields-string-name-
+name: string name
+negative:
+  type: SyntaxError
+  phase: early
+info: |
+  Static Semantics: PropName
+  ...
+  LiteralPropertyName:StringLiteral
+    Return the String value whose code units are the SV of the StringLiteral.
+---*/
+
+throw "Test262: This statement should not be evaluated.";
+
+var C = class {
+  /*{ static }*/ '/*{ propname }*/';
+}

src/class-fields/static-propname-constructor.case

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: Static class field cannot have PropName 'constructor'
+info: |
+
+  // This test file tests the following early error:
+  Static Semantics: Early Errors
+
+    ClassElement : staticFieldDefinition;
+      It is a Syntax Error if PropName of FieldDefinition is "prototype" or "constructor".
+features: [class-fields]
+template: propname-error
+---*/
+
+//- static
+static
+//- propname
+constructor

src/class-fields/static-propname-prototype.case

+// Copyright (C) 2017 Valerie Young. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+desc: Static class fields cannot have PropName 'prototype'
+info: |
+
+  // This test file tests the following early error:
+  Static Semantics: Early Errors
+
+    ClassElement : staticFieldDefinition;
+      It is a Syntax Error if PropName of FieldDefinition is "prototype" or "constructor".
+features: [class-fields]
+template: propname-error
+---*/
+
+//- static
+static
+//- propname
+prototype