69 lines
3.0 KiB
TypeScript
69 lines
3.0 KiB
TypeScript
import { fileURLToPath } from 'node:url'
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import { dirname, resolve } from 'node:path'
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import { describe, expect, it } from 'vitest'
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import { layersResolver } from '../src/resolve'
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const here = dirname(fileURLToPath(import.meta.url))
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const toPosix = (p: string) => p.replace(/\\/g, '/')
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const fixture = (p: string) => toPosix(resolve(here, 'fixtures', 'resolve', p))
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// roots ordered high→low priority: brand overrides base.
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const roots = [fixture('brand/src'), fixture('base/src')]
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const plugin = layersResolver({ roots })
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const resolveId = (id: string, importer?: string): string | null =>
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(plugin.resolveId as (id: string, importer?: string) => string | null)(id, importer)
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describe('layersResolver', () => {
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it('ignores non-layered ids', () => {
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expect(resolveId('vue')).toBeNull()
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expect(resolveId('./relative')).toBeNull()
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expect(resolveId('#layers/base/x')).toBeNull()
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})
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it('resolves @/ to the highest-priority layer that has the file', () => {
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expect(resolveId('@/components/Header.vue')).toBe(fixture('brand/src/components/Header.vue'))
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})
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it('falls through to a lower layer when the higher one lacks the file', () => {
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expect(resolveId('@/components/Footer.vue')).toBe(fixture('base/src/components/Footer.vue'))
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})
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it('supports the ~/ prefix identically', () => {
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expect(resolveId('~/components/Header.vue')).toBe(fixture('brand/src/components/Header.vue'))
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})
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it('probes <path>/index<ext> when no direct file exists', () => {
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expect(resolveId('@/widgets/Card')).toBe(fixture('base/src/widgets/Card/index.ts'))
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})
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it('self-skips: an override importing itself reaches the base layer (super())', () => {
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const brandHeader = fixture('brand/src/components/Header.vue')
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const baseHeader = fixture('base/src/components/Header.vue')
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expect(resolveId('@/components/Header.vue', brandHeader)).toBe(baseHeader)
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})
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it('returns null when nothing matches across layers', () => {
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expect(resolveId('@/components/Missing.vue')).toBeNull()
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})
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it('preserves query suffixes (?inline / ?raw / ?vue&type=…)', () => {
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expect(resolveId('@/components/Header.vue?vue&type=style&lang.css')).toBe(
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`${fixture('brand/src/components/Header.vue')}?vue&type=style&lang.css`,
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)
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})
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it('honors custom prefixes and extensions', () => {
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const p = layersResolver({ roots, prefixes: ['#/'], extensions: ['.ts'] })
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const rid = (id: string) => (p.resolveId as (id: string) => string | null)(id)
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expect(rid('#/widgets/Card')).toBe(fixture('base/src/widgets/Card/index.ts')) // index probe, .ts only
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expect(rid('@/components/Header.vue')).toBeNull() // '@/' is not a configured prefix here
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})
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it('caches candidates (repeated resolveId is stable, served from cache)', () => {
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const p = layersResolver({ roots })
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const rid = (id: string) => (p.resolveId as (id: string) => string | null)(id)
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expect(rid('@/components/Header.vue')).toBe(rid('@/components/Header.vue'))
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expect(rid('@/components/Footer.vue')).toBe(fixture('base/src/components/Footer.vue'))
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})
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})
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