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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/expressions/trailing_comma_arrow.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/expressions/trailing_comma_arrow.js | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/js/src/tests/non262/expressions/trailing_comma_arrow.js b/js/src/tests/non262/expressions/trailing_comma_arrow.js new file mode 100644 index 0000000000..f36b476ef4 --- /dev/null +++ b/js/src/tests/non262/expressions/trailing_comma_arrow.js @@ -0,0 +1,108 @@ +/* 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/. */ + +// Trailing comma in CoverParenthesizedExpressionAndArrowParameterList production. + +// 12.2 Primary Expression +// CoverParenthesizedExpressionAndArrowParameterList[Yield]: +// ( Expression[In, ?Yield] ) +// ( Expression[In, ?Yield] , ) +// () +// ( ...BindingIdentifier[?Yield] ) +// ( Expression[In, ?Yield] , ...BindingIdentifier[?Yield] ) + + +function arrow(argList, parameters = "", returnExpr = "") { + return eval(` + let fun = (${argList}) => { + return ${returnExpr}; + } + fun(${parameters}); + `); +} + +function arrowConcise(argList, parameters = "", returnExpr = "null") { + return eval(` + let fun = (${argList}) => ${returnExpr}; + fun(${parameters}); + `); +} + +const tests = [ + arrow, + arrowConcise, +]; + +// Ensure parameters are passed correctly. +for (let test of tests) { + assertEq(test("a, ", "10", "a"), 10); + assertEq(test("a, b, ", "10, 20", "a + b"), 30); + assertEq(test("a = 30, ", "", "a"), 30); + assertEq(test("a = 30, b = 40, ", "", "a + b"), 70); + + assertEq(test("[a], ", "[10]", "a"), 10); + assertEq(test("[a], [b], ", "[10], [20]", "a + b"), 30); + assertEq(test("[a] = [30], ", "", "a"), 30); + assertEq(test("[a] = [30], [b] = [40], ", "", "a + b"), 70); + + assertEq(test("{a}, ", "{a: 10}", "a"), 10); + assertEq(test("{a}, {b}, ", "{a: 10}, {b: 20}", "a + b"), 30); + assertEq(test("{a} = {a: 30}, ", "", "a"), 30); + assertEq(test("{a} = {a: 30}, {b} = {b: 40}, ", "", "a + b"), 70); +} + +// Ensure function length doesn't change. +for (let test of tests) { + assertEq(test("a, ", "", "fun.length"), 1); + assertEq(test("a, b, ", "", "fun.length"), 2); + + assertEq(test("[a], ", "[]", "fun.length"), 1); + assertEq(test("[a], [b], ", "[], []", "fun.length"), 2); + + assertEq(test("{a}, ", "{}", "fun.length"), 1); + assertEq(test("{a}, {b}, ", "{}, {}", "fun.length"), 2); +} + +for (let test of tests) { + // Trailing comma in empty parameters list. + assertThrowsInstanceOf(() => test(","), SyntaxError); + + // Leading comma. + assertThrowsInstanceOf(() => test(", a"), SyntaxError); + assertThrowsInstanceOf(() => test(", ...a"), SyntaxError); + + // Multiple trailing comma. + assertThrowsInstanceOf(() => test("a, , "), SyntaxError); + assertThrowsInstanceOf(() => test("a..., , "), SyntaxError); + + // Trailing comma after rest parameter. + assertThrowsInstanceOf(() => test("...a, "), SyntaxError); + assertThrowsInstanceOf(() => test("a, ...b, "), SyntaxError); + + // Elision. + assertThrowsInstanceOf(() => test("a, , b"), SyntaxError); +} + +// Trailing comma in non-parenthesized arrow head. +assertThrowsInstanceOf(() => eval("a, => {}"), SyntaxError); +assertThrowsInstanceOf(() => eval("a, => null"), SyntaxError); + +// Parenthesized expression is not an arrow function expression. +for (let trail of ["", ";", "\n => {}"]) { + assertThrowsInstanceOf(() => eval("(a,)" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(a, b,)" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(...a, )" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(a, ...b, )" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(a, , b)" + trail), SyntaxError); + + assertThrowsInstanceOf(() => eval("(,)" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(, a)" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(, ...a)" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(a, , )" + trail), SyntaxError); + assertThrowsInstanceOf(() => eval("(...a, , )" + trail), SyntaxError); +} + + +if (typeof reportCompare === "function") + reportCompare(0, 0); |