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comparison: js/src/jit-test/tests/parser/bug-889628.js
js/src/jit-test/tests/parser/bug-889628.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:57738c6ed0ed |
|---|---|
| 1 // Destructuring assignment to eval or arguments in destructuring is a SyntaxError | |
| 2 | |
| 3 load(libdir + "asserts.js"); | |
| 4 | |
| 5 var patterns = [ | |
| 6 "[_]", | |
| 7 "[a, b, _]", | |
| 8 "[[_]]", | |
| 9 "[[], [{}, [_]]]", | |
| 10 "{x:_}", | |
| 11 "{x:y, z:_}", | |
| 12 "{0:_}", | |
| 13 "{_}", | |
| 14 //"[..._]" | |
| 15 ]; | |
| 16 | |
| 17 // If the assertion below fails, congratulations! It means you have added | |
| 18 // spread operator support to destructuring assignment. Simply uncomment the | |
| 19 // "[..._]" case above. Then delete this comment and assertion. | |
| 20 assertThrowsInstanceOf(() => Function("[...x] = [1]"), ReferenceError); | |
| 21 | |
| 22 for (var pattern of patterns) { | |
| 23 var stmt = pattern + " = obj"; | |
| 24 if (stmt[0] == "{") | |
| 25 stmt = "(" + stmt + ")"; | |
| 26 stmt += ";" | |
| 27 | |
| 28 // stmt is a legal statement... | |
| 29 Function(stmt); | |
| 30 | |
| 31 // ...but not if you replace _ with one of these two names. | |
| 32 for (var name of ["eval", "arguments"]) { | |
| 33 var s = stmt.replace("_", name); | |
| 34 assertThrowsInstanceOf(() => Function(s), SyntaxError); | |
| 35 assertThrowsInstanceOf(() => eval(s), SyntaxError); | |
| 36 assertThrowsInstanceOf(() => eval("'use strict'; " + s), SyntaxError); | |
| 37 } | |
| 38 } |
