diff --git a/test/built-ins/String/prototype/replace/replaceValue-evaluation-order.js b/test/built-ins/String/prototype/replace/replaceValue-evaluation-order.js new file mode 100644 index 0000000000..fe387e6246 --- /dev/null +++ b/test/built-ins/String/prototype/replace/replaceValue-evaluation-order.js @@ -0,0 +1,29 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-string.prototype.replace +description: > + Non-callable replaceValue is evaluated before searching the string. +info: | + String.prototype.replace ( searchValue, replaceValue ) + + ... + 6. If functionalReplace is false, then + a. Set replaceValue to ? ToString(replaceValue). + 7. Search string for the first occurrence of searchString and let pos be the + index within string of the first code unit of the matched substring and let + matched be searchString. If no occurrences of searchString were found, return string. +---*/ + +var calls = 0; +var replaceValue = { + toString: function() { + calls += 1; + return "b"; + }, +}; + +var newString = "".replace("a", replaceValue); +assert.sameValue(newString, ""); +assert.sameValue(calls, 1);