The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/generators/es6-syntax.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,34 @@
     1.4 +// Test interactions between ES6 generators and not-yet-standard
     1.5 +// features.
     1.6 +
     1.7 +function assertSyntaxError(str) {
     1.8 +    var msg;
     1.9 +    var evil = eval;
    1.10 +    try {
    1.11 +        // Non-direct eval.
    1.12 +        evil(str);
    1.13 +    } catch (exc) {
    1.14 +        if (exc instanceof SyntaxError)
    1.15 +            return;
    1.16 +        msg = "Assertion failed: expected SyntaxError, got " + exc;
    1.17 +    }
    1.18 +    if (msg === undefined)
    1.19 +        msg = "Assertion failed: expected SyntaxError, but no exception thrown";
    1.20 +    throw new Error(msg + " - " + str);
    1.21 +}
    1.22 +
    1.23 +// Destructuring binding.
    1.24 +assertSyntaxError("function* f(x = yield) {}");
    1.25 +assertSyntaxError("function* f(x = yield 17) {}");
    1.26 +assertSyntaxError("function* f([yield]) {}");
    1.27 +assertSyntaxError("function* f({ yield }) {}");
    1.28 +assertSyntaxError("function* f(...yield) {}");
    1.29 +
    1.30 +// For each.
    1.31 +assertSyntaxError("for yield");
    1.32 +assertSyntaxError("for yield (;;) {}");
    1.33 +assertSyntaxError("for yield (x of y) {}");
    1.34 +assertSyntaxError("for yield (var i in o) {}");
    1.35 +
    1.36 +// Expression bodies.
    1.37 +assertSyntaxError("function* f() yield 7");