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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
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Michael Telatynski 2024-10-15 11:35:21 +01:00
parent 0f670b8dc0
commit b084ff2313
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27
test/unit-tests/utils/AnimationUtils-test.ts Normal file
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/*
Copyright 2024 New Vector Ltd.
Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/
import { lerp } from "../../src/utils/AnimationUtils";
describe("lerp", () => {
it("correctly interpolates", () => {
expect(lerp(0, 100, 0.5)).toBe(50);
expect(lerp(50, 100, 0.5)).toBe(75);
expect(lerp(0, 1, 0.1)).toBe(0.1);
});
it("clamps the interpolant", () => {
expect(lerp(0, 100, 50)).toBe(100);
expect(lerp(0, 100, -50)).toBe(0);
});
it("handles negative numbers", () => {
expect(lerp(-100, 0, 0.5)).toBe(-50);
expect(lerp(100, -100, 0.5)).toBe(0);
});
});