[Node.js]ランダムな整数を出力する（テスト）

createRandom.test.ts

// テストにはJestを使用

import { createRandom } from "../functions/helpers";
describe('Create random number between two value: Normal Pattern', () => {
    test('Return random value is correct', () => {
        const min = 1;
        const max = 5;

        expect(createRandom(min, max)).toBeLessThanOrEqual(max)
        expect(createRandom(min, max)).toBeGreaterThanOrEqual(min)

    })
})

describe('Create random number between two value: Negative Pattern', () => {
  test("Not be able to input zero value for minimum value", () => {
    const min = 0;
    const max = 5;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input zero value for maximum value", () => {
    const min = 1;
    const max = 0;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input negative value for minimum value", () => {
    const min = -100;
    const max = 5;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input negative value for maximum value", () => {
    const min = 1;
    const max = -200;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input float value for minimum value", () => {
    const min = 1.4;
    const max = 5;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input float value for maximum value", () => {
    const min = 1;
    const max = 5.291;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input value for minimum value greater than maximum value", () => {
    const min = 1024;
    const max = 256;

    try {
      createRandom(min, max);
    } catch (error: any) {
      expect(() => createRandom(min, max)).toThrow(error);
    }
  });

  test("Not be able to input value as string", () => {
    const min = "minimum";
    const max = "maximum";

    try {
      createRandom(min as any, max as any);
    } catch (error: any) {
      expect(() => createRandom(min as any, max as any)).toThrow(error);
    }
  });
})