Christopher Chedeau
cf45afba61
- This brings in the flow test suite that contains a ton of JavaScript parsing edge cases - This creates snapshot tests using the pretty printer for all of them - If uncomment `RUN_AST_TESTS` line in `tests/run_specs.js`, it checks ast(pretty_print(x)) == ast(x). Right now, "178 failed, 197 passed, 375 of 377 total". So half of the tests are not passing, most of them are crashes and many of the rest are subtle issues.
58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
/* @flow */
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function foo(x:string) { }
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var a = [0];
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var b = a.map(function (x) { foo(x); return "" + x; });
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var c: number = a[0];
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var d: number = b[0];
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var e:Array<string> = a.reverse();
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var f = [""];
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var g:number = f.map(function () { return 0; })[0];
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var h: Array<number> = [1,2,3];
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var i: Array<string> = ['a', 'b', 'c'];
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var j: Array<number | string> = h.concat(i);
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var k: Array<number> = h.concat(h);
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var l: Array<number> = h.concat(1,2,3);
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var m: Array<number | string> = h.concat('a', 'b', 'c');
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var n: Array<number> = h.concat('a', 'b', 'c'); // Error
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function reduce_test() {
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/* Adapted from the following source:
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* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
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*/
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[0, 1, 2, 3, 4].reduce(function(previousValue, currentValue, index, array) {
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return previousValue + currentValue + array[index];
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});
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[0, 1, 2, 3, 4].reduce(function(previousValue, currentValue, index, array) {
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return previousValue + currentValue + array[index];
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}, 10);
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var total = [0, 1, 2, 3].reduce(function(a, b) {
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return a + b;
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});
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var flattened = [[0, 1], [2, 3], [4, 5]].reduce(function(a, b) {
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return a.concat(b);
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});
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/* Added later, because the above is insufficient */
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// acc is element type of array when no init is provided
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[""].reduce((acc, str) => acc * str.length); // error, string ~> number
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[""].reduceRight((acc, str) => acc * str.length); // error, string ~> number
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}
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function from_test() {
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var a: Array<string> = Array.from([1, 2, 3], function(val, index) {
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return index % 2 ? "foo" : String(val);
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});
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var b: Array<string> = Array.from([1, 2, 3], function(val) {
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return String(val);
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});
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}
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