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array.test.ts
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import { create, isDraft } from '../src';
test('shift', () => {
const obj = {
a: Array.from({ length: 20 }, (_, i) => ({ i })),
o: { b: { c: 1 } },
};
const state = create(obj, (draft) => {
const a = draft.a.shift()!;
a.i++;
draft.a.push(a);
expect(isDraft(a)).toBeTruthy();
});
// !!! check draft proxy array leakage
expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
});
test('splice', () => {
const obj = {
a: Array.from({ length: 20 }, (_, i) => ({ i })),
o: { b: { c: 1 } },
};
const state = create(obj, (draft) => {
const [a] = draft.a.splice(0, 1)!;
a.i++;
draft.a.push(a);
expect(isDraft(a)).toBeTruthy();
});
// !!! check draft proxy array leakage
expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
});
test('shift with mark', () => {
class Test {
constructor(public i: number) {}
}
const obj = {
a: Array.from({ length: 20 }, (_, i) => new Test(i)),
o: { b: { c: 1 } },
};
const state = create(
obj,
(draft) => {
const a = draft.a.shift()!;
a.i++;
draft.a.push(a);
expect(isDraft(a)).toBeTruthy();
},
{
mark: (value) => (value instanceof Test ? 'immutable' : undefined),
}
);
// !!! check draft proxy array leakage
expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
});
test('splice with mark', () => {
class Test {
constructor(public i: number) {}
}
const obj = {
a: Array.from({ length: 20 }, (_, i) => new Test(i)),
o: { b: { c: 1 } },
};
const state = create(
obj,
(draft) => {
const [a] = draft.a.splice(0, 1)!;
a.i++;
draft.a.push(a);
expect(isDraft(a)).toBeTruthy();
},
{
mark: (value) => (value instanceof Test ? 'immutable' : undefined),
}
);
// !!! check draft proxy array leakage
expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
});
// test('shift with custom copy', () => {
// const obj = {
// a: Array.from({ length: 20 }, (_, i) => new Date(i)),
// o: { b: { c: 1 } },
// };
// const state = create(
// obj,
// (draft) => {
// const a = draft.a.shift()!;
// a.setMilliseconds(42);
// draft.a.push(a);
// expect(isDraft(a)).toBeTruthy();
// },
// {
// mark: (target) => {
// if (target instanceof Date) return () => new Date(target.getTime());
// },
// }
// );
// // !!! check draft proxy array leakage
// expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
// });
// test('splice with custom copy', () => {
// const obj = {
// a: Array.from({ length: 20 }, (_, i) => new Date(i)),
// o: { b: { c: 1 } },
// };
// const state = create(
// obj,
// (draft) => {
// const [a] = draft.a.splice(0, 1)!;
// a.setMilliseconds(42);
// draft.a.push(a);
// expect(isDraft(a)).toBeTruthy();
// },
// {
// mark: (target) => {
// if (target instanceof Date) return () => new Date(target.getTime());
// },
// }
// );
// // !!! check draft proxy array leakage
// expect(obj.a[0] === state.a.slice(-1)[0]).toBe(false);
// });