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question:import { RenderResult, act, screen, waitFor } from '@testing-library/react'; import userEvent from '@testing-library/user-event'; import { mockIpmaClient } from 'api/Client/ClientMock'; import { MarketCardVoidByTimeRange } from 'components/manualActions'; import { manualActionsEndpoints } from 'constants/manualActions'; import { roles } from 'constants/Roles'; import { mockVoidByTimeRangePayload } from 'models/ManualActions'; import { mockMarkets } from 'models/Market'; import { mockStates } from 'models/State'; import { StatusCode } from 'models/StatusCode'; import { ManualActionsWrapper, renderForTest } from 'testUtils'; import en from 'translations/en.json'; const testStrings = { fromDate: '15/02/2022 14:30:00', toDate: '15/02/2022 15:30:00', }; describe('MarketCardVoidByTimeRange.tsx', () => { let fromDate: HTMLElement, toDate: HTMLElement; let wrapper: RenderResult; describe('default', () => { beforeEach(async () => { await act(async () => { wrapper = renderForTest( <MarketCardVoidByTimeRange markets={mockMarkets} states={mockStates} />, ); }); }); it('should render with the default snapshot', () => { expect(wrapper.container).toMatchSnapshot(); }); it('should select a From date', async () => { await act(async () => { userEvent.type( screen.getByRole(roles.textbox, { name: en.form.from }), testStrings.fromDate, ); }); expect( screen.getByRole(roles.textbox, { name: en.form.from }), ).toHaveValue(testStrings.fromDate); }); // it('should select a To date', async () => { // const input = screen.getByRole(roles.textbox, { name: en.form.to }); // await act(async () => { // userEvent.type(input, testStrings.toDate); // }); // expect(input).toHaveValue(testStrings.toDate); // }); it('should select equal From/To dates and show validation', () => { fromDate = screen.getByRole(roles.textbox, { name: en.form.from }); toDate = screen.getByRole(roles.textbox, { name: en.form.to }); userEvent.type(fromDate, testStrings.fromDate); userEvent.type(toDate, testStrings.fromDate); expect(screen.getByText(en.validations.toMinMessage)).toBeInTheDocument(); }); }); // describe('void markets', () => { // beforeAll(() => { // mockIpmaClient // .onPost(manualActionsEndpoints.postVoidByTimeRangeAPI) // .reply(StatusCode.OK, mockVoidByTimeRangePayload); // }); // beforeEach(async () => { // wrapper = renderForTest( // <ManualActionsWrapper> // <MarketCardVoidByTimeRange // markets={mockMarkets} // states={mockStates} // /> // </ManualActionsWrapper>, // ); // fromDate = screen.getByRole(roles.textbox, { name: en.form.from }); // toDate = screen.getByRole(roles.textbox, { name: en.form.to }); // userEvent.type(fromDate, testStrings.fromDate); // userEvent.type(toDate, testStrings.toDate); // await act(async () => { // userEvent.click( // screen.getByRole(roles.button, { name: en.common.cta.void }), // ); // }); // }); // it('should open confirmation modal', () => { // expect( // screen.getByRole(roles.dialog, { name: en.modal.vtr.title }), // ).toBeInTheDocument(); // }); // it('should close confirmation modal when cancel button is clicked', async () => { // userEvent.click( // screen.getByRole(roles.button, { name: en.accessibility.close }), // ); // await waitFor(() => // expect( // screen.queryByRole(roles.dialog, { name: en.modal.vtr.title }), // ).not.toBeInTheDocument(), // ); // }); // it('should show a success toast after a successful void', async () => { // userEvent.click( // screen.getByRole(roles.button, { name: en.common.cta.void }), // ); // expect( // await screen.findByRole(roles.alert, { // name: en.accessibility.success, // }), // ).toBeInTheDocument(); // }); // }); // describe('void error', () => { // beforeAll(() => { // mockIpmaClient // .onPost(manualActionsEndpoints.postVoidByTimeRangeAPI) // .reply(StatusCode.BAD_REQUEST, mockVoidByTimeRangePayload); // }); // it('should show error toast and keep modal open', async () => { // wrapper = renderForTest( // <ManualActionsWrapper> // <MarketCardVoidByTimeRange // markets={mockMarkets} // states={mockStates} // /> // </ManualActionsWrapper>, // ); // fromDate = screen.getByRole(roles.textbox, { name: en.form.from }); // toDate = screen.getByRole(roles.textbox, { name: en.form.to }); // userEvent.type(fromDate, testStrings.fromDate); // userEvent.type(toDate, testStrings.toDate); // await act(async () => { // userEvent.click( // screen.getByRole(roles.button, { name: en.common.cta.void }), // ); // }); // userEvent.click( // screen.getByRole(roles.button, { name: en.common.cta.void }), // ); // expect( // await screen.findByText(en.toast.errorVTRAllStates), // ).toBeInTheDocument(); // expect( // screen.getByRole(roles.dialog, { name: en.modal.vtr.title }), // ).toBeInTheDocument(); // }); // }); }); console.error Warning: An update to MarketCardVoidByTimeRange inside a test was not wrapped in act(...). When testing, code that causes React state updates should be wrapped into act(...): act(() => { /* fire events that update state */ }); /* assert on the output */ This ensures that you're testing the behavior the user would see in the browser. Learn more at https://reactjs.org/link/wrap-tests-with-act at MarketCardVoidByTimeRange (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/components/manualActions/voidByTimeRange/MarketCardVoidByTimeRange/MarketCardVoidByTimeRange.tsx:37:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/@tanstack/react-query/build/lib/QueryClientProvider.js:65:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/providers/QueryClientProvider/QueryClientProvider.tsx:16:3) at FeedbackProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FeedbackContext/FeedbackContext.tsx:46:3) at FeedbackWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeedbackUtils.tsx:4:3) at ToastProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ToastContext/ToastContext.tsx:44:3) at ToastWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/ToastUtils.tsx:6:3) at I18nextProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-i18next/dist/commonjs/I18nextProvider.js:13:19) at I18NWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/I18NUtils.tsx:8:3) at FlagsProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FlagsContext/FlagsContext.tsx:36:3) at FeatureFlagsWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeatureFlagsUtils.tsx:11:3) at ThemeContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ThemeContext/ThemeContextMock.tsx:10:3) at PermissionsContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/PermissionsContext/PermissionsContextMock.tsx:11:8) at TestWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/TestUtils.tsx:32:3) at Router (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-router/lib/components.tsx:290:13) at RouterWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/RouterUtils.tsx:10:3) at printWarning (node_modules/react-dom/cjs/react-dom.development.js:86:30) at error (node_modules/react-dom/cjs/react-dom.development.js:60:7) at warnIfUpdatesNotWrappedWithActDEV (node_modules/react-dom/cjs/react-dom.development.js:27589:9) at scheduleUpdateOnFiber (node_modules/react-dom/cjs/react-dom.development.js:25508:5) at dispatchSetState (node_modules/react-dom/cjs/react-dom.development.js:17527:7) at node_modules/react-hook-form/src/useForm.ts:168:9 at node_modules/react-hook-form/src/useForm.ts:224:9 at node_modules/react-hook-form/src/useForm.ts:395:9 console.error Warning: An update to MarketCardVoidByTimeRange inside a test was not wrapped in act(...). When testing, code that causes React state updates should be wrapped into act(...): act(() => { /* fire events that update state */ }); /* assert on the output */ This ensures that you're testing the behavior the user would see in the browser. Learn more at https://reactjs.org/link/wrap-tests-with-act at MarketCardVoidByTimeRange (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/components/manualActions/voidByTimeRange/MarketCardVoidByTimeRange/MarketCardVoidByTimeRange.tsx:37:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/@tanstack/react-query/build/lib/QueryClientProvider.js:65:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/providers/QueryClientProvider/QueryClientProvider.tsx:16:3) at FeedbackProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FeedbackContext/FeedbackContext.tsx:46:3) at FeedbackWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeedbackUtils.tsx:4:3) at ToastProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ToastContext/ToastContext.tsx:44:3) at ToastWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/ToastUtils.tsx:6:3) at I18nextProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-i18next/dist/commonjs/I18nextProvider.js:13:19) at I18NWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/I18NUtils.tsx:8:3) at FlagsProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FlagsContext/FlagsContext.tsx:36:3) at FeatureFlagsWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeatureFlagsUtils.tsx:11:3) at ThemeContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ThemeContext/ThemeContextMock.tsx:10:3) at PermissionsContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/PermissionsContext/PermissionsContextMock.tsx:11:8) at TestWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/TestUtils.tsx:32:3) at Router (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-router/lib/components.tsx:290:13) at RouterWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/RouterUtils.tsx:10:3) at printWarning (node_modules/react-dom/cjs/react-dom.development.js:86:30) at error (node_modules/react-dom/cjs/react-dom.development.js:60:7) at warnIfUpdatesNotWrappedWithActDEV (node_modules/react-dom/cjs/react-dom.development.js:27589:9) at scheduleUpdateOnFiber (node_modules/react-dom/cjs/react-dom.development.js:25508:5) at dispatchSetState (node_modules/react-dom/cjs/react-dom.development.js:17527:7) at node_modules/react-hook-form/src/useForm.ts:168:9 at node_modules/react-hook-form/src/useForm.ts:224:9 at node_modules/react-hook-form/src/useForm.ts:395:9 console.error Warning: An update to MarketCardVoidByTimeRange inside a test was not wrapped in act(...). When testing, code that causes React state updates should be wrapped into act(...): act(() => { /* fire events that update state */ }); /* assert on the output */ This ensures that you're testing the behavior the user would see in the browser. Learn more at https://reactjs.org/link/wrap-tests-with-act at MarketCardVoidByTimeRange (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/components/manualActions/voidByTimeRange/MarketCardVoidByTimeRange/MarketCardVoidByTimeRange.tsx:37:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/@tanstack/react-query/build/lib/QueryClientProvider.js:65:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/providers/QueryClientProvider/QueryClientProvider.tsx:16:3) at FeedbackProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FeedbackContext/FeedbackContext.tsx:46:3) at FeedbackWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeedbackUtils.tsx:4:3) at ToastProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ToastContext/ToastContext.tsx:44:3) at ToastWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/ToastUtils.tsx:6:3) at I18nextProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-i18next/dist/commonjs/I18nextProvider.js:13:19) at I18NWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/I18NUtils.tsx:8:3) at FlagsProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FlagsContext/FlagsContext.tsx:36:3) at FeatureFlagsWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeatureFlagsUtils.tsx:11:3) at ThemeContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ThemeContext/ThemeContextMock.tsx:10:3) at PermissionsContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/PermissionsContext/PermissionsContextMock.tsx:11:8) at TestWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/TestUtils.tsx:32:3) at Router (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-router/lib/components.tsx:290:13) at RouterWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/RouterUtils.tsx:10:3) at printWarning (node_modules/react-dom/cjs/react-dom.development.js:86:30) at error (node_modules/react-dom/cjs/react-dom.development.js:60:7) at warnIfUpdatesNotWrappedWithActDEV (node_modules/react-dom/cjs/react-dom.development.js:27589:9) at scheduleUpdateOnFiber (node_modules/react-dom/cjs/react-dom.development.js:25508:5) at dispatchSetState (node_modules/react-dom/cjs/react-dom.development.js:17527:7) at node_modules/react-hook-form/src/useForm.ts:168:9 at node_modules/react-hook-form/src/useForm.ts:224:9 at node_modules/react-hook-form/src/useForm.ts:395:9 console.error Warning: An update to MarketCardVoidByTimeRange inside a test was not wrapped in act(...). When testing, code that causes React state updates should be wrapped into act(...): act(() => { /* fire events that update state */ }); /* assert on the output */ This ensures that you're testing the behavior the user would see in the browser. Learn more at https://reactjs.org/link/wrap-tests-with-act at MarketCardVoidByTimeRange (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/components/manualActions/voidByTimeRange/MarketCardVoidByTimeRange/MarketCardVoidByTimeRange.tsx:37:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/@tanstack/react-query/build/lib/QueryClientProvider.js:65:3) at QueryClientProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/providers/QueryClientProvider/QueryClientProvider.tsx:16:3) at FeedbackProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FeedbackContext/FeedbackContext.tsx:46:3) at FeedbackWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeedbackUtils.tsx:4:3) at ToastProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ToastContext/ToastContext.tsx:44:3) at ToastWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/ToastUtils.tsx:6:3) at I18nextProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-i18next/dist/commonjs/I18nextProvider.js:13:19) at I18NWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/I18NUtils.tsx:8:3) at FlagsProvider (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/FlagsContext/FlagsContext.tsx:36:3) at FeatureFlagsWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/FeatureFlagsUtils.tsx:11:3) at ThemeContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/ThemeContext/ThemeContextMock.tsx:10:3) at PermissionsContextMock (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/contexts/PermissionsContext/PermissionsContextMock.tsx:11:8) at TestWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/TestUtils.tsx:32:3) at Router (/Users/ricardobarata/dev/repos/multi-state-management-ui/node_modules/react-router/lib/components.tsx:290:13) at RouterWrapper (/Users/ricardobarata/dev/repos/multi-state-management-ui/src/testUtils/RouterUtils.tsx:10:3) at printWarning (node_modules/react-dom/cjs/react-dom.development.js:86:30) at error (node_modules/react-dom/cjs/react-dom.development.js:60:7) at warnIfUpdatesNotWrappedWithActDEV (node_modules/react-dom/cjs/react-dom.development.js:27589:9) at scheduleUpdateOnFiber (node_modules/react-dom/cjs/react-dom.development.js:25508:5) at dispatchSetState (node_modules/react-dom/cjs/react-dom.development.js:17527:7) at node_modules/react-hook-form/src/useForm.ts:168:9 at node_modules/react-hook-form/src/useForm.ts:224:9 at node_modules/react-hook-form/src/useForm.ts:395:9 why?

answer:The warning/error is caused by updates to the `MarketCardVoidByTimeRange` component's state during test execution not being wrapped in a proper `act` function. React needs these `act` wrappers to emulate the correct synchronous behavior of browser updates so that you can test the UI behavior as it would appear in the browser. In your case, the relevant portions of your tests are missing an `act` wrapper, specifically when you call `userEvent.type` or `userEvent.click`. To fix this, wrap the `userEvent.type` and `userEvent.click` calls inside the `act` function: ```javascript it('should select equal From/To dates and show validation', async () => { await act(async () => { // Wrap the userEvent calls inside act userEvent.type(screen.getByRole(roles.textbox, { name: en.form.from }), testStrings.fromDate); userEvent.type(screen.getByRole(roles.textbox, { name: en.form.to }), testStrings.fromDate); }); expect(screen.getByText(en.validations.toMinMessage)).toBeInTheDocument(); }); ``` Make sure to do this for all other tests where you are causing state updates. After making these changes, your tests should no longer throw these warnings/errors.

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