add tests for in memory pagination

Author: mmalfertheiner

package.json

@@ -43,7 +43,7 @@
   "devDependencies": {
     "@testing-library/jest-dom": "^5.11.10",
     "@testing-library/react": "^11.2.6",
-    "@testing-library/react-hooks": "^5.1.1",
+    "@testing-library/react-hooks": "^5.1.3",
     "@types/jest": "^26.0.22",
     "@types/react": "^17.0.3",
     "@typescript-eslint/eslint-plugin": "^4.21.0",

src/__test__/inMemoryPagination.test.ts

@@ -0,0 +1,69 @@
+import { act, renderHook } from '@testing-library/react-hooks'
+import { useSearchAndPaginationInMemory } from '../inMemoryPagination'
+
+test('should initialize pagination', () => {
+  const { result } = renderHook(() => useSearchAndPaginationInMemory())
+
+  expect(result.current.page).toBe(0)
+  expect(result.current.search).toBe('')
+  expect(result.current.page).toBe(0)
+})
+
+test('should change page', () => {
+  const { result } = renderHook(() => useSearchAndPaginationInMemory())
+
+  act(() => {
+    result.current.paginationActions.setPage(2)
+  })
+
+  expect(result.current.page).toBe(2)
+})
+
+test('should change search', () => {
+  const { result } = renderHook(() => useSearchAndPaginationInMemory())
+
+  act(() => {
+    result.current.searchActions.search('Max')
+  })
+
+  expect(result.current.search).toBe('Max')
+})
+
+test('on search change -> page should be reset', () => {
+  const { result } = renderHook(() => useSearchAndPaginationInMemory())
+
+  act(() => {
+    result.current.paginationActions.setPage(2)
+  })
+
+  expect(result.current.page).toBe(2)
+
+  act(() => {
+    result.current.searchActions.search('Max')
+  })
+
+  expect(result.current.search).toBe('Max')
+  expect(result.current.page).toBe(0)
+})
+
+test('clear pagination should reset search and page', () => {
+  const { result } = renderHook(() => useSearchAndPaginationInMemory())
+
+  act(() => {
+    result.current.searchActions.search('Max')
+  })
+
+  act(() => {
+    result.current.paginationActions.setPage(2)
+  })
+
+  expect(result.current.search).toBe('Max')
+  expect(result.current.page).toBe(2)
+
+  act(() => {
+    result.current.searchActions.clear()
+  })
+
+  expect(result.current.search).toBe('')
+  expect(result.current.page).toBe(0)
+})