Add tests

packages/store/__tests__/index.test.ts

@@ -0,0 +1,254 @@
+import type {Repository, TrustedEvent} from "@welshman/util"
+import {get} from "svelte/store"
+import {afterEach, beforeEach, describe, expect, it, vi} from "vitest"
+import {
+  adapter,
+  custom,
+  deriveEvents,
+  deriveEventsMapped,
+  deriveIsDeleted,
+  getter,
+  synced,
+  throttled,
+  withGetter,
+} from "../src/index"
+
+// Mock localStorage
+const localStorageMock = (() => {
+  let store: Record<string, string> = {}
+  return {
+    getItem: (key: string) => store[key] || null,
+    setItem: (key: string, value: string) => {
+      store[key] = value
+    },
+    clear: () => {
+      store = {}
+    },
+  }
+})()
+
+vi.stubGlobal("localStorage", localStorageMock)
+
+describe("Store utilities", () => {
+  beforeEach(() => {
+    localStorage.clear()
+    vi.useFakeTimers()
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  describe("synced", () => {
+    it("should sync with localStorage", () => {
+      const store = synced("testKey", "default")
+      expect(get(store)).toBe("default")
+
+      store.set("new value")
+      expect(localStorage.getItem("testKey")).toBe(JSON.stringify("new value"))
+    })
+
+    it("should load existing value from localStorage", () => {
+      localStorage.setItem("testKey", JSON.stringify("existing"))
+      const store = synced("testKey", "default")
+      expect(get(store)).toBe("existing")
+    })
+  })
+
+  describe("getter", () => {
+    it("should return current store value", () => {
+      const store = synced("test", "initial")
+      const getValue = getter(store)
+
+      expect(getValue()).toBe("initial")
+      store.set("updated")
+      expect(getValue()).toBe("updated")
+    })
+  })
+
+  describe("withGetter", () => {
+    it("should add getter to writable store", () => {
+      const store = withGetter(synced("test", "initial"))
+
+      expect(store.get()).toBe("initial")
+      store.set("updated")
+      expect(store.get()).toBe("updated")
+    })
+  })
+
+  describe("throttled", () => {
+    it("should throttle updates", () => {
+      const mockFn = vi.fn()
+      const store = synced("test", 0)
+      const throttledStore = throttled(100, store)
+
+      throttledStore.subscribe(mockFn)
+
+      store.set(1)
+      store.set(2)
+      store.set(3)
+
+      expect(mockFn).toHaveBeenCalledTimes(1) // Initial call
+
+      vi.advanceTimersByTime(100)
+      expect(mockFn).toHaveBeenCalledTimes(2)
+      expect(mockFn).toHaveBeenLastCalledWith(3)
+    })
+  })
+
+  describe("custom", () => {
+    it("should handle updates correctly", () => {
+      const mockFn = vi.fn()
+      const store = custom<number>(set => {
+        set(0)
+        return () => {}
+      })
+
+      store.subscribe(mockFn)
+      store.set(1)
+      store.update(n => n + 1)
+
+      expect(mockFn).toHaveBeenCalledTimes(3) // Initial + set + update
+      expect(store.get()).toBe(2)
+    })
+  })
+
+  describe("adapter", () => {
+    it("should adapt between different types", () => {
+      const source = synced<number>("test", 0)
+      const adapted = adapter({
+        store: source,
+        forward: n => n.toString(),
+        backward: s => parseInt(s, 10),
+      })
+
+      const mockFn = vi.fn()
+      adapted.subscribe(mockFn)
+
+      adapted.set("42")
+      expect(get(source)).toBe(42)
+      expect(mockFn).toHaveBeenLastCalledWith("42")
+
+      adapted.update(s => (parseInt(s, 10) + 1).toString())
+      expect(get(source)).toBe(43)
+      expect(mockFn).toHaveBeenLastCalledWith("43")
+    })
+  })
+
+  describe("Event-related stores", () => {
+    const mockRepository = {
+      query: vi.fn(),
+      isDeleted: vi.fn(),
+      isDeletedByAddress: vi.fn(),
+      on: vi.fn(),
+      off: vi.fn(),
+    } satisfies Partial<Repository>
+
+    beforeEach(() => {
+      vi.clearAllMocks()
+    })
+
+    describe("deriveEvents", () => {
+      it("should derive events from repository", () => {
+        const mockEvent = {id: "1", content: "test"} as TrustedEvent
+        mockRepository.query.mockReturnValue([mockEvent])
+
+        const store = deriveEvents(mockRepository as any, {
+          filters: [],
+        })
+
+        const mockFn = vi.fn()
+        store.subscribe(mockFn)
+
+        expect(mockRepository.query).toHaveBeenCalled()
+        expect(mockFn).toHaveBeenCalledWith([mockEvent])
+      })
+    })
+
+    describe("deriveEventsMapped", () => {
+      it("should map events to items", async () => {
+        const mockEvent = {id: "1", content: "test"} as TrustedEvent
+        mockRepository.query.mockReturnValue([mockEvent])
+
+        const store = deriveEventsMapped(mockRepository as any, {
+          filters: [],
+          eventToItem: event => ({id: event.id, mapped: true}),
+          itemToEvent: item => ({id: item.id, content: ""}) as TrustedEvent,
+        })
+
+        const mockFn = vi.fn()
+        store.subscribe(mockFn)
+
+        expect(mockRepository.query).toHaveBeenCalled()
+        expect(mockFn).toHaveBeenCalledWith([{id: "1", mapped: true}])
+      })
+
+      it("should handle async eventToItem mapping", async () => {
+        const mockEvent = {id: "1", content: "test"} as TrustedEvent
+        mockRepository.query.mockReturnValue([mockEvent])
+
+        const store = deriveEventsMapped(mockRepository as any, {
+          filters: [],
+          eventToItem: async event => ({id: event.id, mapped: true}),
+          itemToEvent: item => ({id: item.id, content: ""}) as TrustedEvent,
+        })
+
+        const mockFn = vi.fn()
+        store.subscribe(mockFn)
+
+        // Wait for async operations to complete
+        await vi.runAllTimersAsync()
+
+        expect(mockRepository.query).toHaveBeenCalled()
+        expect(mockFn).toHaveBeenCalledWith([{id: "1", mapped: true}])
+      })
+
+      it("should handle repository updates", () => {
+        const mockEvent = {id: "1", content: "test"} as TrustedEvent
+        mockRepository.query.mockReturnValue([mockEvent])
+
+        const store = deriveEventsMapped(mockRepository as any, {
+          filters: [{}],
+          eventToItem: event => ({id: event.id, mapped: true}),
+          itemToEvent: item => ({id: item.id, content: ""}) as TrustedEvent,
+        })
+
+        const mockFn = vi.fn()
+        store.subscribe(mockFn)
+
+        const [[_, callback]] = mockRepository.on.mock.calls
+
+        callback({
+          added: new Set(),
+          removed: new Set([mockEvent.id]),
+        })
+
+        vi.advanceTimersByTime(300) // Wait for batch delay
+
+        expect(mockFn).toHaveBeenLastCalledWith([{id: "2", mapped: true}])
+      })
+    })
+
+    describe("deriveIsDeleted", () => {
+      it("should track deletion status", () => {
+        const mockEvent = {id: "1"} as TrustedEvent
+
+        mockRepository.isDeleted.mockReturnValue(false)
+
+        const store = deriveIsDeleted(mockRepository as any, mockEvent)
+        const mockFn = vi.fn()
+        store.subscribe(mockFn)
+
+        expect(mockRepository.isDeleted).toHaveBeenCalledWith(mockEvent)
+        expect(mockFn).toHaveBeenCalledWith(false)
+
+        const [[_, callback]] = mockRepository.on.mock.calls
+
+        callback()
+
+        expect(mockRepository.isDeleted).toHaveBeenCalledWith(mockEvent)
+        expect(mockFn).toHaveBeenCalledWith(false)
+      })
+    })
+  })
+})