78 lines
2.8 KiB
TypeScript
78 lines
2.8 KiB
TypeScript
/*
|
|
Copyright 2021 The Matrix.org Foundation C.I.C.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
import { iterableDiff, iterableIntersection } from "../../src/utils/iterables";
|
|
|
|
describe("iterables", () => {
|
|
describe("iterableIntersection", () => {
|
|
it("should return the intersection", () => {
|
|
const a = [1, 2, 3];
|
|
const b = [1, 2, 4]; // note diff
|
|
const result = iterableIntersection(a, b);
|
|
expect(result).toBeDefined();
|
|
expect(result).toHaveLength(2);
|
|
expect(result).toEqual([1, 2]);
|
|
});
|
|
|
|
it("should return an empty array on no matches", () => {
|
|
const a = [1, 2, 3];
|
|
const b = [4, 5, 6];
|
|
const result = iterableIntersection(a, b);
|
|
expect(result).toBeDefined();
|
|
expect(result).toHaveLength(0);
|
|
});
|
|
});
|
|
|
|
describe("iterableDiff", () => {
|
|
it("should see added from A->B", () => {
|
|
const a = [1, 2, 3];
|
|
const b = [1, 2, 3, 4];
|
|
const result = iterableDiff(a, b);
|
|
expect(result).toBeDefined();
|
|
expect(result.added).toBeDefined();
|
|
expect(result.removed).toBeDefined();
|
|
expect(result.added).toHaveLength(1);
|
|
expect(result.removed).toHaveLength(0);
|
|
expect(result.added).toEqual([4]);
|
|
});
|
|
|
|
it("should see removed from A->B", () => {
|
|
const a = [1, 2, 3];
|
|
const b = [1, 2];
|
|
const result = iterableDiff(a, b);
|
|
expect(result).toBeDefined();
|
|
expect(result.added).toBeDefined();
|
|
expect(result.removed).toBeDefined();
|
|
expect(result.added).toHaveLength(0);
|
|
expect(result.removed).toHaveLength(1);
|
|
expect(result.removed).toEqual([3]);
|
|
});
|
|
|
|
it("should see added and removed in the same set", () => {
|
|
const a = [1, 2, 3];
|
|
const b = [1, 2, 4]; // note diff
|
|
const result = iterableDiff(a, b);
|
|
expect(result).toBeDefined();
|
|
expect(result.added).toBeDefined();
|
|
expect(result.removed).toBeDefined();
|
|
expect(result.added).toHaveLength(1);
|
|
expect(result.removed).toHaveLength(1);
|
|
expect(result.added).toEqual([4]);
|
|
expect(result.removed).toEqual([3]);
|
|
});
|
|
});
|
|
});
|