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Add array concat util (#9306)

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Michael Weimann 2022-09-21 20:06:05 +02:00 • committed by GitHub
parent c182c1c706
commit 516b4f0ff8
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3 changed files with 39 additions and 4 deletions
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28
test/utils/arrays-test.ts
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@ -28,6 +28,7 @@ import {
arrayIntersection,
ArrayUtil,
GroupedArray,
concat,
} from "../../src/utils/arrays";
type TestParams = { input: number[], output: number[] };
@ -375,5 +376,32 @@ describe('arrays', () => {
expect(result.value).toEqual(output);
});
});
describe("concat", () => {
const emptyArray = () => new Uint8Array(0);
const array1 = () => new Uint8Array([1, 2, 3]);
const array2 = () => new Uint8Array([4, 5, 6]);
const array3 = () => new Uint8Array([7, 8, 9]);
it("should work for empty arrays", () => {
expect(concat(emptyArray(), emptyArray())).toEqual(emptyArray());
});
it("should concat an empty and non-empty array", () => {
expect(concat(emptyArray(), array1())).toEqual(array1());
});
it("should concat an non-empty and empty array", () => {
expect(concat(array1(), emptyArray())).toEqual(array1());
});
it("should concat two arrays", () => {
expect(concat(array1(), array2())).toEqual(new Uint8Array([1, 2, 3, 4, 5, 6]));
});
it("should concat three arrays", () => {
expect(concat(array1(), array2(), array3())).toEqual(new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 9]));
});
});
});