diff --git a/test/built-ins/String/prototype/replace/replaceValue-evaluation-order-regexp-object.js b/test/built-ins/String/prototype/replace/replaceValue-evaluation-order-regexp-object.js new file mode 100644 index 0000000000..82c2bdf8c0 --- /dev/null +++ b/test/built-ins/String/prototype/replace/replaceValue-evaluation-order-regexp-object.js @@ -0,0 +1,27 @@ +// Copyright (C) 2020 Rick Waldron. 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 via toString +info: | + String.prototype.replace ( searchValue, replaceValue ) + + If functionalReplace is false, then + Set replaceValue to ? ToString(replaceValue). +---*/ + +let calls = 0; +let replaceValue = /$/; +let oldToString = replaceValue.toString.bind(replaceValue); + +replaceValue.toString = () => { + calls += 1; + return oldToString(); +}; + +let newString = "".replace("a", replaceValue); +assert.sameValue(newString, ""); +assert.sameValue(calls, 1); +assert.sameValue("dollar".replace("dollar", /$/), "/$/");