Strict mode Passingnon-Strict mode Passing
Features:
- ∅
// Copyright (C) 2016 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-string.prototype.substr es6id: B.2.3.1 description: Behavior when "length" is a negative number info: | [...] 7. Let resultLength be min(max(end, 0), size - intStart). 8. If resultLength ≤ 0, return the empty String "". ---*/ assert.sameValue('abc'.substr(0, -1), '', '0, -1'); assert.sameValue('abc'.substr(0, -2), '', '0, -2'); assert.sameValue('abc'.substr(0, -3), '', '0, -3'); assert.sameValue('abc'.substr(0, -4), '', '0, -4'); assert.sameValue('abc'.substr(1, -1), '', '1, -1'); assert.sameValue('abc'.substr(1, -2), '', '1, -2'); assert.sameValue('abc'.substr(1, -3), '', '1, -3'); assert.sameValue('abc'.substr(1, -4), '', '1, -4'); assert.sameValue('abc'.substr(2, -1), '', '2, -1'); assert.sameValue('abc'.substr(2, -2), '', '2, -2'); assert.sameValue('abc'.substr(2, -3), '', '2, -3'); assert.sameValue('abc'.substr(2, -4), '', '2, -4'); assert.sameValue('abc'.substr(3, -1), '', '3, -1'); assert.sameValue('abc'.substr(3, -2), '', '3, -2'); assert.sameValue('abc'.substr(3, -3), '', '3, -3'); assert.sameValue('abc'.substr(3, -4), '', '3, -4');