template-repo/__tests__/lib/flags.test.ts
2025-11-02 01:38:30 -06:00

93 lines
2.5 KiB
TypeScript

import { beforeEach, afterEach, describe, expect, it, vi } from "vitest"
import {
FLAG_DEFAULTS,
Flags,
getFlags,
registerRuntimeFlags,
resetFlagsCache,
parseBool,
} from "@/lib/flags"
type FlagName = keyof typeof FLAG_DEFAULTS
const flagKeys = Object.keys(FLAG_DEFAULTS) as FlagName[]
const originalEnv: Partial<Record<FlagName, string | undefined>> = {}
beforeEach(() => {
resetFlagsCache()
for (const key of flagKeys) {
if (!(key in originalEnv)) {
originalEnv[key] = process.env[key]
}
delete process.env[key]
}
delete (globalThis as Record<string, unknown>).__UNITED_TATTOO_RUNTIME_FLAGS__
})
afterEach(() => {
resetFlagsCache()
for (const key of flagKeys) {
const value = originalEnv[key]
if (value === undefined) {
delete process.env[key]
} else {
process.env[key] = value
}
}
delete (globalThis as Record<string, unknown>).__UNITED_TATTOO_RUNTIME_FLAGS__
})
describe("parseBool", () => {
it("handles string coercion and defaults", () => {
expect(parseBool("true", false)).toBe(true)
expect(parseBool(" FALSE ", true)).toBe(false)
expect(parseBool("1", false)).toBe(true)
expect(parseBool(undefined, true)).toBe(true)
})
})
describe("getFlags", () => {
it("falls back to defaults and logs missing keys", () => {
const warnSpy = vi.spyOn(console, "warn").mockImplementation(() => {})
const snapshot = getFlags({ refresh: true })
expect(snapshot).toMatchObject(FLAG_DEFAULTS)
expect(warnSpy).toHaveBeenCalled()
warnSpy.mockRestore()
})
it("honours environment overrides", () => {
process.env.BOOKING_ENABLED = "false"
process.env.PUBLIC_APPOINTMENT_REQUESTS_ENABLED = "true"
const snapshot = getFlags({ refresh: true })
expect(snapshot.BOOKING_ENABLED).toBe(false)
expect(snapshot.PUBLIC_APPOINTMENT_REQUESTS_ENABLED).toBe(true)
})
})
describe("registerRuntimeFlags", () => {
it("allows runtime overrides to take precedence", () => {
process.env.BOOKING_ENABLED = "true"
const override = { ...FLAG_DEFAULTS, BOOKING_ENABLED: false } as typeof FLAG_DEFAULTS
registerRuntimeFlags(override)
const snapshot = getFlags()
expect(snapshot.BOOKING_ENABLED).toBe(false)
})
})
describe("Flags proxy", () => {
it("reflects current snapshot values", () => {
process.env.ADMIN_ENABLED = "false"
const snapshot = getFlags({ refresh: true })
expect(snapshot.ADMIN_ENABLED).toBe(false)
expect(Flags.ADMIN_ENABLED).toBe(false)
})
})