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LibJS: Add the DataView built-in object

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Idan Horowitz 2021-06-14 01:47:08 +03:00 • committed by Linus Groh
parent 5b2255291e
commit e4d267d4fb
15 changed files with 351 additions and 0 deletions
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15
Userland/Libraries/LibJS/Tests/builtins/DataView/DataView.js Normal file
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test("basic functionality", () => {
expect(DataView).toHaveLength(1);
expect(DataView.name).toBe("DataView");
expect(DataView.prototype.constructor).toBe(DataView);
const buffer = new ArrayBuffer();
expect(new DataView(buffer)).toBeInstanceOf(DataView);
expect(typeof new DataView(buffer)).toBe("object");
});
test("DataView constructor must be invoked with 'new'", () => {
expect(() => {
DataView();
}).toThrowWithMessage(TypeError, "DataView constructor must be called with 'new'");
});

4
Userland/Libraries/LibJS/Tests/builtins/DataView/DataView.prototype.buffer.js Normal file
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test("basic functionality", () => {
const buffer = new ArrayBuffer();
expect(new DataView(buffer).buffer).toBe(buffer);
});

7
Userland/Libraries/LibJS/Tests/builtins/DataView/DataView.prototype.byteLength.js Normal file
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test("basic functionality", () => {
const buffer = new ArrayBuffer(124);
expect(new DataView(buffer).byteLength).toBe(124);
expect(new DataView(buffer, 0, 1).byteLength).toBe(1);
expect(new DataView(buffer, 0, 64).byteLength).toBe(64);
expect(new DataView(buffer, 0, 123).byteLength).toBe(123);
});

7
Userland/Libraries/LibJS/Tests/builtins/DataView/DataView.prototype.byteOffset.js Normal file
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test("basic functionality", () => {
const buffer = new ArrayBuffer(124);
expect(new DataView(buffer).byteOffset).toBe(0);
expect(new DataView(buffer, 1).byteOffset).toBe(1);
expect(new DataView(buffer, 64).byteOffset).toBe(64);
expect(new DataView(buffer, 123).byteOffset).toBe(123);
});