ksv741
b40066838c
Adopt RUB-only API contract; remove currency cards, selectors, screener currency filter and multi-currency branches. BREAKING CHANGE: requires the RUB-only backend contract.
37 lines
1.0 KiB
TypeScript
37 lines
1.0 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import { sumMoney } from "./decimal";
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describe("sumMoney", () => {
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it("adds exact signed decimals", () => {
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expect(sumMoney([
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{ currency: "RUB", value: "0.1" },
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{ currency: "RUB", value: "0.2" },
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{ currency: "RUB", value: "-1500000.45" },
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{ currency: "RUB", value: "200" },
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])).toEqual({ currency: "RUB", value: "-1499800.15" });
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});
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it("preserves significant fractional digits and a compensated zero", () => {
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expect(sumMoney([
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{ currency: "RUB", value: "100.5" },
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{ currency: "RUB", value: "49.50" },
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{ currency: "RUB", value: "0.005" },
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])).toEqual({ currency: "RUB", value: "150.005" });
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expect(sumMoney([
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{ currency: "RUB", value: "100" },
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{ currency: "RUB", value: "-100" },
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])).toEqual({ currency: "RUB", value: "0" });
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});
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it.each(["", ".", "1.2.3", "not-a-number"])(
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"rejects malformed amount %s instead of treating it as zero",
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(value) => {
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expect(sumMoney([
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{ currency: "RUB", value: "100" },
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{ currency: "RUB", value },
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])).toBeNull();
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},
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);
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});
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