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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| import { deleteKeys, emptyObject, toDateRangeString } from "../functions"; | ||
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| describe("Common Functions", () => { | ||
| describe("deleteKeys()", () => { | ||
| it("should delete keys from object in-place", () => { | ||
| const obj = { a: 1, b: 2, c: 3, d: 4 }; | ||
| const keys = ["a", "c"] as const; | ||
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| expect(obj).toBeInstanceOf(Object); | ||
| expect(Object.keys(obj)).toHaveLength(4); | ||
| expect(obj).toBeTruthy(); | ||
| expect(obj).toHaveProperty("a"); | ||
| expect(obj).toHaveProperty("b"); | ||
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| expect(keys).toBeInstanceOf(Array); | ||
| expect(keys).toHaveLength(2); | ||
| expect(keys).toBeTruthy(); | ||
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| deleteKeys(obj, keys); | ||
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| expect(obj).toBeTruthy(); | ||
| expect(Object.keys(obj)).toHaveLength(2); | ||
| expect(obj).not.toHaveProperty("a"); | ||
| expect(obj).toHaveProperty("b"); | ||
| expect(obj).not.toHaveProperty("c"); | ||
| expect(obj).toHaveProperty("d"); | ||
| }); | ||
| }); | ||
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| describe("emptyObject()", () => { | ||
| it("should empty object in-place", () => { | ||
| const objStrKey: Record<string, unknown> = { a: 1, b: 2, c: 3, d: 4 }; | ||
| const objNumKey: Record<number, unknown> = { 1: "a", 2: "b", 3: "c", 4: "d" }; | ||
| const objSymbolKey: Record<symbol, unknown> = { [Symbol("a")]: 1, [Symbol("b")]: 2, [Symbol("c")]: 3, [Symbol("d")]: 4 }; | ||
| const objMixedKey: Record<string | number | symbol, unknown> = { a: 1, 2: "b", [Symbol("c")]: 3 }; | ||
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| expect(objStrKey).toBeInstanceOf(Object); | ||
| expect(objNumKey).toBeInstanceOf(Object); | ||
| expect(objSymbolKey).toBeInstanceOf(Object); | ||
| expect(objMixedKey).toBeInstanceOf(Object); | ||
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| emptyObject(objStrKey); | ||
| emptyObject(objNumKey); | ||
| emptyObject(objSymbolKey); | ||
| emptyObject(objMixedKey); | ||
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| expect(objStrKey).toBeInstanceOf(Object); | ||
| expect(objNumKey).toBeInstanceOf(Object); | ||
| expect(objSymbolKey).toBeInstanceOf(Object); | ||
| expect(objMixedKey).toBeInstanceOf(Object); | ||
| expect(Object.keys(objStrKey)).toHaveLength(0); | ||
| expect(Object.keys(objNumKey)).toHaveLength(0); | ||
| expect(Object.keys(objSymbolKey)).toHaveLength(0); | ||
| expect(Object.keys(objMixedKey)).toHaveLength(0); | ||
| }); | ||
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| it("should return empty object if an empty object is provided", () => { | ||
| const objEmpty: Record<string, unknown> = { }; | ||
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| expect(objEmpty).toBeInstanceOf(Object); | ||
| expect(Object.keys(objEmpty)).toHaveLength(0); | ||
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| emptyObject(objEmpty); | ||
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| expect(objEmpty).toBeInstanceOf(Object); | ||
| expect(Object.keys(objEmpty)).toHaveLength(0); | ||
| }); | ||
| }); | ||
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| describe("toDateRangeString()", () => { | ||
| const predefinedDate = new Date("2000-01-01"); | ||
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| it("should return date range string (sequential items)", () => { | ||
| const testData1 = [ "2024-01-01", "2024-01-02" ]; | ||
| const testData2 = [ "2024-01-01", "2024-01-02", "2024-01-03" ]; | ||
| const testData3 = [ "2024-01-01", "2025-01-01", "2026-01-01" ]; | ||
| const testData4 = [ new Date("2024-01-01"), new Date("2024-01-02") ]; | ||
| const testData5 = [ new Date("2024-01-01"), new Date("2024-01-02"), new Date("2024-01-03") ]; | ||
| const testData6 = [ new Date("2024-01-01"), new Date("2025-01-01"), new Date("2026-01-01") ]; | ||
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| expect(toDateRangeString(testData1)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-01-02").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData2)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-01-03").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData3)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2026-01-01").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData4)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-01-02").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData5)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-01-03").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData6)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2026-01-01").toLocaleDateString()}`); | ||
| }); | ||
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| it("should return date range string (non-sequential items)", () => { | ||
| const testData1 = [ "2024-01-01", "2024-05-30", "2024-02-21" ]; | ||
| const testData2 = [ predefinedDate, new Date("2025-01-01"), new Date("2020-04-05"), new Date("2022-12-12") ]; | ||
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| expect(toDateRangeString(testData1)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-05-30").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData2)).toBe(`${predefinedDate.toLocaleDateString()} ~ ${new Date("2025-01-01").toLocaleDateString()}`); | ||
| }); | ||
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| it("should return date range string (string/date mixed items)", () => { | ||
| const testData1 = [ "2024-01-01", new Date("2024-05-30"), "2024-02-21" ]; | ||
| const testData2 = [ "2025-01-01", new Date("2020-04-05"), predefinedDate, "2022-12-12" ]; | ||
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| expect(toDateRangeString(testData1)).toBe(`${new Date("2024-01-01").toLocaleDateString()} ~ ${new Date("2024-05-30").toLocaleDateString()}`); | ||
| expect(toDateRangeString(testData2)).toBe(`${predefinedDate.toLocaleDateString()} ~ ${new Date("2025-01-01").toLocaleDateString()}`); | ||
| }); | ||
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| it("should return single locale date string if the array has only one date", () => { | ||
| const testData1 = [ "2024-01-01" ]; | ||
| const testData2 = [ predefinedDate ]; | ||
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| expect(toDateRangeString(testData1)).toBe(new Date("2024-01-01").toLocaleDateString()); | ||
| expect(toDateRangeString(testData2)).toBe(predefinedDate.toLocaleDateString()); | ||
| }); | ||
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| it("should throw `TypeError` if invalid date is provided in the array", () => { | ||
| const testData1 = [ "2024-01-01", "Invalid", "What the?" ]; | ||
| const testData2 = [ new Date(), new Date("HELLO WORLD"), new Date("2024-04-04") ]; | ||
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| expect(() => toDateRangeString(testData1)).toThrow(TypeError); | ||
| expect(() => toDateRangeString(testData2)).toThrow(TypeError); | ||
| }); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,16 +1,39 @@ | ||
| export function emptyObject(target: Record<string, unknown>): void { | ||
| Object.keys(target).forEach((key) => delete target[key]); | ||
| /** | ||
| * Delete keyed members from an object in-place | ||
| * @param obj Target object | ||
| * @param keys Keys to delete | ||
| */ | ||
| export function deleteKeys<T>(obj: T, keys: readonly (keyof T)[]): void { | ||
| for(const key of keys) { | ||
| delete obj[key]; | ||
| } | ||
| } | ||
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| export function emptyNumberKeyObject(target: Record<number, unknown>): void { | ||
| Object.keys(target).forEach((key) => delete target[parseInt(key)]); | ||
| /** | ||
| * Delete all members from an object in-place, make the object empty | ||
| * @param obj Target object | ||
| */ | ||
| export function emptyObject<TKey extends string | number>(obj: Record<TKey, unknown>): void { | ||
| Object.keys(obj).forEach((key) => delete obj[key as TKey]); | ||
| } | ||
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| /** | ||
| * Convert array of dates to date range string | ||
| * @param dates Array of `Date` instances or date strings can be parsed by `new Date()` constructor | ||
| * @returns Date range string with this format: `[minDateLocaleString] ~ [maxDateLocaleString]`. If the array has only one date, return the date's locale string | ||
| * @throws {TypeError} If some of elements in the array is not a valid date | ||
| */ | ||
| export function toDateRangeString(dates: Array<Date | string>): string { | ||
| if(dates.some((date) => isNaN(new Date(date).getTime()))) { | ||
| throw new TypeError("Some of elements in the array is not a valid date"); | ||
| } | ||
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| if(dates.length === 1) return new Date(dates[0]).toLocaleDateString(); | ||
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| const min = dates.reduce((prev, curr) => new Date(prev) < new Date(curr) ? prev : curr); | ||
| const max = dates.reduce((prev, curr) => new Date(prev) > new Date(curr) ? prev : curr); | ||
| const dateTimes = dates.map((date) => new Date(date).getTime()); | ||
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| const minTime = Math.min(...dateTimes); | ||
| const maxTime = Math.max(...dateTimes); | ||
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| return `${new Date(min).toLocaleDateString()} ~ ${new Date(max).toLocaleDateString()}`; | ||
| return `${new Date(minTime).toLocaleDateString()} ~ ${new Date(maxTime).toLocaleDateString()}`; | ||
| } |
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