Add unit tests

Author: wojtekmaj

test/nuxt/components/PackageWeeklyDownloadStats.spec.ts

@@ -0,0 +1,63 @@
+import { mockNuxtImport, mountSuspended } from '@nuxt/test-utils/runtime'
+import { defineComponent, h } from 'vue'
+import { describe, expect, it, vi } from 'vitest'
+
+const { mockFetchPackageDownloadEvolution } = vi.hoisted(() => ({
+  mockFetchPackageDownloadEvolution: vi.fn(),
+}))
+
+mockNuxtImport('useCharts', () => {
+  return () => ({
+    fetchPackageDownloadEvolution: (...args: unknown[]) =>
+      mockFetchPackageDownloadEvolution(...args),
+  })
+})
+
+vi.mock('vue-data-ui/vue-ui-sparkline', () => ({
+  VueUiSparkline: defineComponent({
+    name: 'VueUiSparkline',
+    inheritAttrs: false,
+    setup(_, { attrs, slots }) {
+      return () => h('div', { class: attrs.class }, slots.default?.() ?? [])
+    },
+  }),
+}))
+
+import PackageWeeklyDownloadStats from '~/components/Package/WeeklyDownloadStats.vue'
+
+describe('PackageWeeklyDownloadStats', () => {
+  const baseProps = {
+    packageName: 'test-package',
+    createdIso: '2026-02-05T00:00:00.000Z',
+  }
+
+  it('hides the section when weekly downloads are empty', async () => {
+    mockFetchPackageDownloadEvolution.mockReset()
+    mockFetchPackageDownloadEvolution.mockResolvedValue([])
+
+    const component = await mountSuspended(PackageWeeklyDownloadStats, {
+      props: baseProps,
+    })
+
+    expect(component.text()).not.toContain('Weekly Downloads')
+  })
+
+  it('shows the section when weekly downloads exist', async () => {
+    mockFetchPackageDownloadEvolution.mockReset()
+    mockFetchPackageDownloadEvolution.mockResolvedValue([
+      {
+        weekStart: '2026-01-01',
+        weekEnd: '2026-01-07',
+        timestampStart: 1767225600000,
+        timestampEnd: 1767744000000,
+        downloads: 42,
+      },
+    ])
+
+    const component = await mountSuspended(PackageWeeklyDownloadStats, {
+      props: baseProps,
+    })
+
+    expect(component.text()).toContain('Weekly Downloads')
+  })
+})