25 lines
942 B
TypeScript
25 lines
942 B
TypeScript
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import { describe, expect, it } from "vitest";
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import { harvillePlacementProbabilities } from "../brackt-simulator";
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describe("BracktSimulator", () => {
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it("returns uniform placement probabilities when all weights are zero", () => {
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const probabilities = harvillePlacementProbabilities([0, 0, 0, 0, 0, 0]);
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expect(probabilities).toHaveLength(6);
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for (const row of probabilities) {
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expect(row).toHaveLength(6);
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for (const probability of row) {
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expect(probability).toBeCloseTo(1 / 6, 5);
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}
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}
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});
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it("gives higher first-place probability to higher projected weights", () => {
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const probabilities = harvillePlacementProbabilities([10, 20, 40]);
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expect(probabilities[2][0]).toBeGreaterThan(probabilities[1][0]);
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expect(probabilities[1][0]).toBeGreaterThan(probabilities[0][0]);
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expect(probabilities[0][0] + probabilities[1][0] + probabilities[2][0]).toBeCloseTo(1, 5);
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});
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});
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