82 lines
2.6 KiB
JavaScript
82 lines
2.6 KiB
JavaScript
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
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import { setActivePinia, createPinia } from 'pinia'
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import {
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useSeriesReaderStore,
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currentPageFromScroll,
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progressPct,
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clampPage
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} from '../src/stores/seriesReader.js'
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function stubFetch(handler) {
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globalThis.fetch = vi.fn(async (url, init) => {
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const { status, body } = handler(url, init)
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return {
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ok: status >= 200 && status < 300,
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status, statusText: String(status),
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text: async () => (body == null ? '' : JSON.stringify(body))
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}
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})
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}
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const M = [
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{ page_number: 1, top: 0, height: 100 },
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{ page_number: 2, top: 100, height: 100 },
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{ page_number: 3, top: 200, height: 100 }
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]
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describe('seriesReader pure helpers', () => {
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it('currentPageFromScroll: top of doc → page 1', () => {
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expect(currentPageFromScroll(M, 0, 90)).toBe(1) // target 30
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})
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it('currentPageFromScroll: boundary crosses into page 2', () => {
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expect(currentPageFromScroll(M, 80, 90)).toBe(2) // target 110
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})
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it('currentPageFromScroll: scrolled past last → last page', () => {
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expect(currentPageFromScroll(M, 5000, 300)).toBe(3)
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})
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it('currentPageFromScroll: empty metrics → 1', () => {
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expect(currentPageFromScroll([], 0, 90)).toBe(1)
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})
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it('progressPct: 0 at top, ~50 mid, clamped 100, zero-guard', () => {
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expect(progressPct(0, 1000, 500)).toBe(0)
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expect(progressPct(250, 1000, 500)).toBe(50)
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expect(progressPct(9999, 1000, 500)).toBe(100)
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expect(progressPct(0, 100, 100)).toBe(0) // denom 0 → 0
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})
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it('clampPage: below→1, above→total, valid passthrough, NaN→1', () => {
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expect(clampPage(0, 5)).toBe(1)
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expect(clampPage(99, 5)).toBe(5)
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expect(clampPage(3, 5)).toBe(3)
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expect(clampPage(NaN, 5)).toBe(1)
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expect(clampPage(2, 0)).toBe(1)
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})
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})
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describe('seriesReader store', () => {
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beforeEach(() => setActivePinia(createPinia()))
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afterEach(() => vi.restoreAllMocks())
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it('load() stores series + pages', async () => {
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const s = useSeriesReaderStore()
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stubFetch(() => ({
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status: 200,
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body: {
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series: { id: 7, name: 'V' },
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pages: [{ image_id: 1, page_number: 1, thumbnail_url: 't', image_url: 'i' }]
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}
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}))
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await s.load(7)
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expect(s.series).toEqual({ id: 7, name: 'V' })
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expect(s.pages[0].image_url).toBe('i')
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expect(s.error).toBe(null)
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})
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it('load() on 404 sets error, no throw', async () => {
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const s = useSeriesReaderStore()
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stubFetch(() => ({ status: 404, body: { error: 'not a series' } }))
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await s.load(9)
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expect(s.error).toBe('not a series')
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expect(s.pages).toEqual([])
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})
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})
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