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| 1 | +import { describe, test, expect } from "vitest"; |
| 2 | +import { |
| 3 | + parseIntervalModifier, |
| 4 | + applyModifierToDate, |
| 5 | + formatModifierForDisplay, |
| 6 | +} from "../utilities/intervalModifiers"; |
| 7 | + |
| 8 | +describe("parseIntervalModifier", () => { |
| 9 | + test("returns null for undefined/null", () => { |
| 10 | + expect(parseIntervalModifier(undefined)).toBeNull(); |
| 11 | + expect(parseIntervalModifier(null)).toBeNull(); |
| 12 | + }); |
| 13 | + |
| 14 | + test("returns null for empty string", () => { |
| 15 | + expect(parseIntervalModifier("")).toBeNull(); |
| 16 | + }); |
| 17 | + |
| 18 | + test("parses days", () => { |
| 19 | + expect(parseIntervalModifier("-13d")).toEqual({ value: -13, unit: "days" }); |
| 20 | + expect(parseIntervalModifier("5d")).toEqual({ value: 5, unit: "days" }); |
| 21 | + }); |
| 22 | + |
| 23 | + test("parses hours", () => { |
| 24 | + expect(parseIntervalModifier("-2h")).toEqual({ value: -2, unit: "hours" }); |
| 25 | + expect(parseIntervalModifier("24h")).toEqual({ value: 24, unit: "hours" }); |
| 26 | + }); |
| 27 | + |
| 28 | + test("parses minutes", () => { |
| 29 | + expect(parseIntervalModifier("-30m")).toEqual({ value: -30, unit: "minutes" }); |
| 30 | + expect(parseIntervalModifier("15m")).toEqual({ value: 15, unit: "minutes" }); |
| 31 | + }); |
| 32 | + |
| 33 | + test("parses seconds", () => { |
| 34 | + expect(parseIntervalModifier("-60s")).toEqual({ value: -60, unit: "seconds" }); |
| 35 | + expect(parseIntervalModifier("30s")).toEqual({ value: 30, unit: "seconds" }); |
| 36 | + }); |
| 37 | + |
| 38 | + test("parses months (uppercase M)", () => { |
| 39 | + expect(parseIntervalModifier("-1M")).toEqual({ value: -1, unit: "months" }); |
| 40 | + expect(parseIntervalModifier("3M")).toEqual({ value: 3, unit: "months" }); |
| 41 | + }); |
| 42 | + |
| 43 | + test("parses milliseconds (two-char suffix)", () => { |
| 44 | + expect(parseIntervalModifier("500ms")).toEqual({ value: 500, unit: "milliseconds" }); |
| 45 | + expect(parseIntervalModifier("-100ms")).toEqual({ value: -100, unit: "milliseconds" }); |
| 46 | + }); |
| 47 | + |
| 48 | + test("parses nanoseconds (two-char suffix)", () => { |
| 49 | + expect(parseIntervalModifier("1000ns")).toEqual({ value: 1000, unit: "nanoseconds" }); |
| 50 | + expect(parseIntervalModifier("-500ns")).toEqual({ value: -500, unit: "nanoseconds" }); |
| 51 | + }); |
| 52 | + |
| 53 | + test("returns null for invalid format", () => { |
| 54 | + expect(parseIntervalModifier("invalid")).toBeNull(); |
| 55 | + expect(parseIntervalModifier("13")).toBeNull(); |
| 56 | + expect(parseIntervalModifier("d13")).toBeNull(); |
| 57 | + expect(parseIntervalModifier("13x")).toBeNull(); |
| 58 | + }); |
| 59 | + |
| 60 | + test("returns null for non-string input", () => { |
| 61 | + // @ts-expect-error Testing invalid input |
| 62 | + expect(parseIntervalModifier(123)).toBeNull(); |
| 63 | + // @ts-expect-error Testing invalid input |
| 64 | + expect(parseIntervalModifier({ days: -13 })).toBeNull(); |
| 65 | + }); |
| 66 | +}); |
| 67 | + |
| 68 | +describe("applyModifierToDate", () => { |
| 69 | + const baseDate = "2025-03-15T12:00:00.000Z"; |
| 70 | + |
| 71 | + test("applies days modifier", () => { |
| 72 | + const result = applyModifierToDate(baseDate, { value: -13, unit: "days" }); |
| 73 | + expect(result.toISO()).toBe("2025-03-02T12:00:00.000Z"); |
| 74 | + }); |
| 75 | + |
| 76 | + test("applies positive days modifier", () => { |
| 77 | + const result = applyModifierToDate(baseDate, { value: 5, unit: "days" }); |
| 78 | + expect(result.toISO()).toBe("2025-03-20T12:00:00.000Z"); |
| 79 | + }); |
| 80 | + |
| 81 | + test("applies hours modifier", () => { |
| 82 | + const result = applyModifierToDate(baseDate, { value: -2, unit: "hours" }); |
| 83 | + expect(result.toISO()).toBe("2025-03-15T10:00:00.000Z"); |
| 84 | + }); |
| 85 | + |
| 86 | + test("applies months modifier", () => { |
| 87 | + const result = applyModifierToDate(baseDate, { value: -1, unit: "months" }); |
| 88 | + expect(result.toISO()).toBe("2025-02-15T12:00:00.000Z"); |
| 89 | + }); |
| 90 | + |
| 91 | + test("applies minutes modifier", () => { |
| 92 | + const result = applyModifierToDate(baseDate, { value: -30, unit: "minutes" }); |
| 93 | + expect(result.toISO()).toBe("2025-03-15T11:30:00.000Z"); |
| 94 | + }); |
| 95 | + |
| 96 | + test("applies seconds modifier", () => { |
| 97 | + const result = applyModifierToDate(baseDate, { value: -60, unit: "seconds" }); |
| 98 | + expect(result.toISO()).toBe("2025-03-15T11:59:00.000Z"); |
| 99 | + }); |
| 100 | + |
| 101 | + test("applies milliseconds modifier", () => { |
| 102 | + const result = applyModifierToDate(baseDate, { value: 500, unit: "milliseconds" }); |
| 103 | + expect(result.toISO()).toBe("2025-03-15T12:00:00.500Z"); |
| 104 | + }); |
| 105 | +}); |
| 106 | + |
| 107 | +describe("formatModifierForDisplay", () => { |
| 108 | + test("returns empty string for null/undefined", () => { |
| 109 | + expect(formatModifierForDisplay(undefined)).toBe(""); |
| 110 | + expect(formatModifierForDisplay(null)).toBe(""); |
| 111 | + }); |
| 112 | + |
| 113 | + test("formats negative days", () => { |
| 114 | + expect(formatModifierForDisplay("-13d")).toBe("-13 days"); |
| 115 | + }); |
| 116 | + |
| 117 | + test("formats positive days with plus sign", () => { |
| 118 | + expect(formatModifierForDisplay("5d")).toBe("+5 days"); |
| 119 | + }); |
| 120 | + |
| 121 | + test("formats singular day", () => { |
| 122 | + expect(formatModifierForDisplay("1d")).toBe("+1 day"); |
| 123 | + expect(formatModifierForDisplay("-1d")).toBe("-1 day"); |
| 124 | + }); |
| 125 | + |
| 126 | + test("formats hours", () => { |
| 127 | + expect(formatModifierForDisplay("-2h")).toBe("-2 hours"); |
| 128 | + expect(formatModifierForDisplay("1h")).toBe("+1 hour"); |
| 129 | + }); |
| 130 | + |
| 131 | + test("formats minutes", () => { |
| 132 | + expect(formatModifierForDisplay("-30m")).toBe("-30 minutes"); |
| 133 | + expect(formatModifierForDisplay("1m")).toBe("+1 minute"); |
| 134 | + }); |
| 135 | + |
| 136 | + test("formats months", () => { |
| 137 | + expect(formatModifierForDisplay("-1M")).toBe("-1 month"); |
| 138 | + expect(formatModifierForDisplay("3M")).toBe("+3 months"); |
| 139 | + }); |
| 140 | + |
| 141 | + test("formats milliseconds", () => { |
| 142 | + expect(formatModifierForDisplay("500ms")).toBe("+500 milliseconds"); |
| 143 | + expect(formatModifierForDisplay("-100ms")).toBe("-100 milliseconds"); |
| 144 | + }); |
| 145 | + |
| 146 | + test("formats nanoseconds", () => { |
| 147 | + expect(formatModifierForDisplay("1000ns")).toBe("+1000 nanoseconds"); |
| 148 | + expect(formatModifierForDisplay("-1ns")).toBe("-1 nanosecond"); |
| 149 | + }); |
| 150 | +}); |
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