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types.test.ts
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types.test.ts
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import { type IsEqual, type RecursiveTuple } from "@local/helpers/types";
import { assertType } from "../test/helpers";
describe("RecursiveTuple", () => {
test("should create a tuple of length 1", () => {
type Expected = [string];
type Actual = RecursiveTuple<string, 1>;
assertType<IsEqual<Expected, Actual>>(true);
});
test("should create a tuple of length 2", () => {
type Expected = [string] | [string, string];
type Actual = RecursiveTuple<string, 2>;
assertType<IsEqual<Expected, Actual>>(true);
});
test("should create a tuple of length 3", () => {
type Expected = [string] | [string, string] | [string, string, string];
type Actual = RecursiveTuple<string, 3>;
assertType<IsEqual<Expected, Actual>>(true);
});
test("should create a tuple with mixed primitives", () => {
type Expected = [string | number] | [string | number, string | number];
type Actual = RecursiveTuple<string | number, 2>;
assertType<IsEqual<Expected, Actual>>(true);
});
test("should expand type aliases of primitives", () => {
type T0 = string;
type Expected = [string] | [string, string];
type Actual = RecursiveTuple<T0, 2>;
assertType<IsEqual<Expected, Actual>>(true);
});
});