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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/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.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 'js/src/tests/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.js')
-rw-r--r-- | js/src/tests/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.js b/js/src/tests/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.js new file mode 100644 index 0000000000..b12e6d8e0f --- /dev/null +++ b/js/src/tests/test262/built-ins/String/prototype/startsWith/coerced-values-of-position.js @@ -0,0 +1,41 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 21.1.3.18 +description: > + Returns based on coerced values of position. +info: | + 21.1.3.18 String.prototype.startsWith ( searchString [ , position ] ) + + ... + 9. Let pos be ToInteger(position). (If position is undefined, this step + produces the value 0). + 10. ReturnIfAbrupt(pos). + 11. Let len be the number of elements in S. + 12. Let start be min(max(pos, 0), len). + 13. Let searchLength be the number of elements in searchStr. + 14. If searchLength+start is greater than len, return false. + 15. If the sequence of elements of S starting at start of length searchLength + is the same as the full element sequence of searchStr, return true. + 16. Otherwise, return false. + ... +---*/ + +var str = 'The future is cool!'; + +assert(str.startsWith('The future', NaN), 'NaN coerced to 0'); +assert(str.startsWith('The future', null), 'null coerced to 0'); +assert(str.startsWith('The future', false), 'false coerced to 0'); +assert(str.startsWith('The future', ''), '"" coerced to 0'); +assert(str.startsWith('The future', '0'), '"0" coerced to 0'); +assert(str.startsWith('The future', undefined), 'undefined coerced to 0'); +assert(str.startsWith('The future', 0.4), '0.4 coerced to 0'); + +assert.sameValue( + str.startsWith('The future', true), false, + 'true coerced to 1' +); +assert.sameValue(str.startsWith('The future', '1'), false, '"1" coerced to 1'); +assert.sameValue(str.startsWith('The future', 1.4), false, '1.4 coerced to 1'); + +reportCompare(0, 0); |