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-rw-r--r--js/src/tests/ecma_6/Syntax/escaped-strict-reserved-words-and-yield.js105
1 files changed, 105 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Syntax/escaped-strict-reserved-words-and-yield.js b/js/src/tests/ecma_6/Syntax/escaped-strict-reserved-words-and-yield.js
new file mode 100644
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+++ b/js/src/tests/ecma_6/Syntax/escaped-strict-reserved-words-and-yield.js
@@ -0,0 +1,105 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const testCases = [
+ // Label identifier.
+ id => `${id}: ;`,
+
+ // Binding identifier.
+ id => `var ${id};`,
+ id => `let ${id};`,
+ id => `const ${id} = 0;`,
+
+ // Binding identifier in binding pattern.
+ id => `var [${id}] = [];`,
+ id => `var [${id} = 0] = [];`,
+ id => `var [...${id}] = [];`,
+ id => `var {a: ${id}} = {};`,
+ id => `var {${id}} = {};`,
+ id => `var {${id} = 0} = {};`,
+
+ id => `let [${id}] = [];`,
+ id => `let [${id} = 0] = [];`,
+ id => `let [...${id}] = [];`,
+ id => `let {a: ${id}} = {};`,
+ id => `let {${id}} = {};`,
+ id => `let {${id} = 0} = {};`,
+
+ id => `const [${id}] = [];`,
+ id => `const [${id} = 0] = [];`,
+ id => `const [...${id}] = [];`,
+ id => `const {a: ${id}} = {};`,
+ id => `const {${id}} = {};`,
+ id => `const {${id} = 0} = {};`,
+
+ // Identifier reference.
+ id => `void ${id};`,
+];
+
+const strictReservedWords = [
+ "implements",
+ "interface",
+ "package",
+ "private",
+ "protected",
+ "public",
+];
+
+function escapeWord(s) {
+ return "\\u00" + s.charCodeAt(0).toString(16) + s.substring(1);
+}
+
+for (let strictReservedWordOrYield of [...strictReservedWords, "yield"]) {
+ let escapedStrictReservedWordOrYield = escapeWord(strictReservedWordOrYield);
+
+ for (let testCase of testCases) {
+ eval(testCase(strictReservedWordOrYield));
+ eval(testCase(escapedStrictReservedWordOrYield));
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ "use strict";
+ ${testCase(strictReservedWordOrYield)}
+ `), SyntaxError);
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ "use strict";
+ ${testCase(escapedStrictReservedWordOrYield)}
+ `), SyntaxError);
+ }
+}
+
+// |yield| is always a keyword in generator functions.
+for (let testCase of testCases) {
+ let yield = "yield";
+ let escapedYield = escapeWord("yield");
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ function* g() {
+ ${testCase(yield)}
+ }
+ `), SyntaxError);
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ function* g() {
+ ${testCase(escapedYield)}
+ }
+ `), SyntaxError);
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ "use strict";
+ function* g() {
+ ${testCase(yield)}
+ }
+ `), SyntaxError);
+
+ assertThrowsInstanceOf(() => eval(String.raw`
+ "use strict";
+ function* g() {
+ ${testCase(escapedYield)}
+ }
+ `), SyntaxError);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0, "ok");