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// |reftest| shell-option(--enable-uint8array-base64) skip-if(!Uint8Array.fromBase64||!xulRuntime.shell) -- uint8array-base64 is not enabled unconditionally, requires shell-options
// Copyright (C) 2024 Kevin Gibbons. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-uint8array.frombase64
description: Uint8Array.fromBase64 triggers effects of the "alphabet" and "lastChunkHandling" getters, but does not perform toString on the results
includes: [compareArray.js]
features: [uint8array-base64, TypedArray]
---*/
assert.throws(TypeError, function() {
Uint8Array.fromBase64("Zg==", { alphabet: Object("base64") });
});
assert.throws(TypeError, function() {
Uint8Array.fromBase64("Zg==", { lastChunkHandling: Object("loose") });
});
var toStringCalls = 0;
var throwyToString = {
toString: function() {
toStringCalls += 1;
throw new Test262Error("toString called");
}
};
assert.throws(TypeError, function() {
Uint8Array.fromBase64("Zg==", { alphabet: throwyToString });
});
assert.sameValue(toStringCalls, 0);
assert.throws(TypeError, function() {
Uint8Array.fromBase64("Zg==", { lastChunkHandling: throwyToString });
});
assert.sameValue(toStringCalls, 0);
var alphabetAccesses = 0;
var base64UrlOptions = {};
Object.defineProperty(base64UrlOptions, "alphabet", {
get: function() {
alphabetAccesses += 1;
return "base64url";
}
});
var arr = Uint8Array.fromBase64("x-_y", base64UrlOptions);
assert.compareArray(arr, [199, 239, 242]);
assert.sameValue(alphabetAccesses, 1);
var lastChunkHandlingAccesses = 0;
var strictOptions = {};
Object.defineProperty(strictOptions, "lastChunkHandling", {
get: function() {
lastChunkHandlingAccesses += 1;
return "strict";
}
});
var arr = Uint8Array.fromBase64("Zg==", strictOptions);
assert.compareArray(arr, [102]);
assert.sameValue(lastChunkHandlingAccesses, 1);
reportCompare(0, 0);