import { beforeEach, describe, expect, it, vi } from "vitest"

vi.mock("./getPrefix", () => ({
  getPrefix: vi.fn(() => "gitsha"),
}))

import { generateCacheKey } from "./index"

describe("generateCacheKey", () => {
  beforeEach(() => {
    vi.resetModules()
  })

  it("generates cachekey with prefix and key using string", () => {
    expect(generateCacheKey("key1")).toBe("gitsha:key1")
  })

  it("generates cachekey with prefix and key using array", () => {
    expect(generateCacheKey(["key1"])).toBe("gitsha:key1")
  })

  it("generates cachekey with prefix and keys", () => {
    const actual = generateCacheKey(["key1", "key2"])
    expect(actual).toBe("gitsha:key1_key2")
  })

  it("should throw an error if no keys are provided", () => {
    expect(() => generateCacheKey([])).toThrow("No keys provided")
  })

  it("should throw an error if only invalid keys are provided", () => {
    expect(() => generateCacheKey(["", undefined, null] as string[])).toThrow(
      "No keys provided"
    )
    expect(() => generateCacheKey("")).toThrow("No keys provided")
  })
})