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LibJS: Implement and test getters added by resizable ArrayBuffer

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ForLoveOfCats 2022-03-02 11:45:26 -05:00 • committed by Linus Groh
parent e01ee4e30b
commit b29e19c52a
6 changed files with 113 additions and 0 deletions
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54
Userland/Libraries/LibJS/Tests/builtins/ArrayBuffer/ArrayBuffer.js
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@ -11,3 +11,57 @@ test("ArrayBuffer constructor must be invoked with 'new'", () => {
ArrayBuffer();
}).toThrowWithMessage(TypeError, "ArrayBuffer constructor must be called with 'new'");
});
describe("resizable array buffer", () => {
test("construct with options", () => {
expect(new ArrayBuffer(5, { maxByteLength: 5 })).toBeInstanceOf(ArrayBuffer);
});
test("resizable when provided max byte length", () => {
expect(new ArrayBuffer(1).resizable).toEqual(false);
expect(new ArrayBuffer(1, {}).resizable).toEqual(false);
expect(new ArrayBuffer(1, { maxByteLength: undefined }).resizable).toEqual(false);
expect(new ArrayBuffer(1, { maxByteLength: 1 }).resizable).toEqual(true);
});
test("byte length must be shorter than max byte length", () => {
expect(() => {
new ArrayBuffer(1, { maxByteLength: 0 });
}).toThrowWithMessage(RangeError, "Byte length exceeds maxByteLength option");
});
test("max byte length cannot be too large", () => {
expect(() => {
new ArrayBuffer(0, { maxByteLength: 9007199254740992 });
}).toThrowWithMessage(RangeError, "Index must be a positive integer");
});
test("max byte length cannot be negative", () => {
expect(() => {
new ArrayBuffer(0, { maxByteLength: -1 });
}).toThrowWithMessage(RangeError, "Index must be a positive integer");
});
test("invalid max byte length object", () => {
expect(() => {
new ArrayBuffer(0, {
maxByteLength: {
toString: function () {
return {};
},
valueOf: function () {
return {};
},
},
});
}).toThrowWithMessage(TypeError, "Cannot convert object to number");
expect(() => {
new ArrayBuffer(0, {
get maxByteLength() {
throw "Exception";
},
});
}).toThrow();
});
});