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+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.indexof
+description: Throws a TypeError if this has a detached buffer
+info: |
+ %TypedArray%.prototype.indexOf ( searchElement [ , fromIndex ] )
+
+ The interpretation and use of the arguments of %TypedArray%.prototype.indexOf are the same as for Array.prototype.indexOf as defined in 22.1.3.14.
+
+ When the indexOf method is called with one or two arguments, the following steps are taken:
+
+ Let O be the this value.
+ Perform ? ValidateTypedArray(O).
+ Let len be O.[[ArrayLength]].
+ If len is 0, return -1F.
+ Let n be ? ToIntegerOrInfinity(fromIndex).
+ Assert: If fromIndex is undefined, then n is 0.
+ If n is +∞, return -1F.
+ Else if n is -∞, set n to 0.
+ If n ≥ 0, then
+ Let k be n.
+ Else,
+ Let k be len + n.
+ If k < 0, set k to 0.
+ Repeat, while k < len,
+ Let kPresent be ! HasProperty(O, ! ToString(F(k))).
+ If kPresent is true, then
+ Let elementK be ! Get(O, ! ToString(F(k))).
+ Let same be the result of performing Strict Equality Comparison searchElement === elementK.
+ If same is true, return F(k).
+ Set k to k + 1.
+ Return -1F.
+
+includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
+features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+ const sample = new TA(1);
+ const fromIndex = {
+ valueOf() {
+ $DETACHBUFFER(sample.buffer);
+ return 0;
+ }
+ };
+
+ assert.sameValue(sample.indexOf(undefined, fromIndex), -1);
+});
+
+reportCompare(0, 0);