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import { Dedupe } from "common/Dedupe.sys.mjs";
describe("Dedupe", () => {
let instance;
beforeEach(() => {
instance = new Dedupe();
});
describe("group", () => {
it("should remove duplicates inside the groups", () => {
const beforeItems = [
[1, 1, 1],
[2, 2, 2],
[3, 3, 3],
];
const afterItems = [[1], [2], [3]];
assert.deepEqual(instance.group(...beforeItems), afterItems);
});
it("should remove duplicates between groups, favouring earlier groups", () => {
const beforeItems = [
[1, 2, 3],
[2, 3, 4],
[3, 4, 5],
];
const afterItems = [[1, 2, 3], [4], [5]];
assert.deepEqual(instance.group(...beforeItems), afterItems);
});
it("should remove duplicates from groups of objects", () => {
instance = new Dedupe(item => item.id);
const beforeItems = [
[{ id: 1 }, { id: 1 }, { id: 2 }],
[{ id: 1 }, { id: 3 }, { id: 2 }],
[{ id: 1 }, { id: 2 }, { id: 5 }],
];
const afterItems = [[{ id: 1 }, { id: 2 }], [{ id: 3 }], [{ id: 5 }]];
assert.deepEqual(instance.group(...beforeItems), afterItems);
});
});
});
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