31 lines
1.2 KiB
TypeScript
31 lines
1.2 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import { getWorkingIndicatorDotStrength, WORKING_INDICATOR_OFFSETS } from "./working-indicator";
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describe("getWorkingIndicatorDotStrength", () => {
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it("returns a stable triangular pulse over one cycle", () => {
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expect(getWorkingIndicatorDotStrength(0, 0)).toBe(0);
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expect(getWorkingIndicatorDotStrength(0.125, 0)).toBe(0.25);
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expect(getWorkingIndicatorDotStrength(0.25, 0)).toBe(0.5);
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expect(getWorkingIndicatorDotStrength(0.5, 0)).toBe(1);
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expect(getWorkingIndicatorDotStrength(0.75, 0)).toBe(0.5);
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expect(getWorkingIndicatorDotStrength(1, 0)).toBe(0);
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});
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it("keeps the dots phase-shifted instead of identical", () => {
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const strengths = WORKING_INDICATOR_OFFSETS.map((offset) =>
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getWorkingIndicatorDotStrength(0, offset),
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);
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expect(strengths).toEqual([0, 0.26666666666666666, 0.5333333333333333]);
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});
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it("wraps progress cleanly across loop boundaries", () => {
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expect(getWorkingIndicatorDotStrength(1.1, 0)).toBeCloseTo(
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getWorkingIndicatorDotStrength(0.1, 0),
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);
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expect(getWorkingIndicatorDotStrength(-0.1, 0)).toBeCloseTo(
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getWorkingIndicatorDotStrength(0.9, 0),
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);
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});
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});
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