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web-client/tests-examples/demo-todo-app.spec.ts

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2024-06-12 09:34:49 +02:00
import { test, expect, type Page } from '@playwright/test';
test.beforeEach(async ({ page }) => {
await page.goto('https://demo.playwright.dev/todomvc');
});
const TODO_ITEMS = [
'buy some cheese',
'feed the cat',
'book a doctors appointment'
];
test.describe('New Todo', () => {
test('should allow me to add todo items', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
// Create 1st todo.
await newTodo.fill(TODO_ITEMS[0]);
await newTodo.press('Enter');
// Make sure the list only has one todo item.
await expect(page.getByTestId('todo-title')).toHaveText([
TODO_ITEMS[0]
]);
// Create 2nd todo.
await newTodo.fill(TODO_ITEMS[1]);
await newTodo.press('Enter');
// Make sure the list now has two todo items.
await expect(page.getByTestId('todo-title')).toHaveText([
TODO_ITEMS[0],
TODO_ITEMS[1]
]);
await checkNumberOfTodosInLocalStorage(page, 2);
});
test('should clear text input field when an item is added', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
// Create one todo item.
await newTodo.fill(TODO_ITEMS[0]);
await newTodo.press('Enter');
// Check that input is empty.
await expect(newTodo).toBeEmpty();
await checkNumberOfTodosInLocalStorage(page, 1);
});
test('should append new items to the bottom of the list', async ({ page }) => {
// Create 3 items.
await createDefaultTodos(page);
// create a todo count locator
const todoCount = page.getByTestId('todo-count')
// Check test using different methods.
await expect(page.getByText('3 items left')).toBeVisible();
await expect(todoCount).toHaveText('3 items left');
await expect(todoCount).toContainText('3');
await expect(todoCount).toHaveText(/3/);
// Check all items in one call.
await expect(page.getByTestId('todo-title')).toHaveText(TODO_ITEMS);
await checkNumberOfTodosInLocalStorage(page, 3);
});
});
test.describe('Mark all as completed', () => {
test.beforeEach(async ({ page }) => {
await createDefaultTodos(page);
await checkNumberOfTodosInLocalStorage(page, 3);
});
test.afterEach(async ({ page }) => {
await checkNumberOfTodosInLocalStorage(page, 3);
});
test('should allow me to mark all items as completed', async ({ page }) => {
// Complete all todos.
await page.getByLabel('Mark all as complete').check();
// Ensure all todos have 'completed' class.
await expect(page.getByTestId('todo-item')).toHaveClass(['completed', 'completed', 'completed']);
await checkNumberOfCompletedTodosInLocalStorage(page, 3);
});
test('should allow me to clear the complete state of all items', async ({ page }) => {
const toggleAll = page.getByLabel('Mark all as complete');
// Check and then immediately uncheck.
await toggleAll.check();
await toggleAll.uncheck();
// Should be no completed classes.
await expect(page.getByTestId('todo-item')).toHaveClass(['', '', '']);
});
test('complete all checkbox should update state when items are completed / cleared', async ({ page }) => {
const toggleAll = page.getByLabel('Mark all as complete');
await toggleAll.check();
await expect(toggleAll).toBeChecked();
await checkNumberOfCompletedTodosInLocalStorage(page, 3);
// Uncheck first todo.
const firstTodo = page.getByTestId('todo-item').nth(0);
await firstTodo.getByRole('checkbox').uncheck();
// Reuse toggleAll locator and make sure its not checked.
await expect(toggleAll).not.toBeChecked();
await firstTodo.getByRole('checkbox').check();
await checkNumberOfCompletedTodosInLocalStorage(page, 3);
// Assert the toggle all is checked again.
await expect(toggleAll).toBeChecked();
});
});
test.describe('Item', () => {
test('should allow me to mark items as complete', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
// Create two items.
for (const item of TODO_ITEMS.slice(0, 2)) {
await newTodo.fill(item);
await newTodo.press('Enter');
}
// Check first item.
const firstTodo = page.getByTestId('todo-item').nth(0);
await firstTodo.getByRole('checkbox').check();
await expect(firstTodo).toHaveClass('completed');
// Check second item.
const secondTodo = page.getByTestId('todo-item').nth(1);
await expect(secondTodo).not.toHaveClass('completed');
await secondTodo.getByRole('checkbox').check();
// Assert completed class.
await expect(firstTodo).toHaveClass('completed');
await expect(secondTodo).toHaveClass('completed');
});
test('should allow me to un-mark items as complete', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
// Create two items.
for (const item of TODO_ITEMS.slice(0, 2)) {
await newTodo.fill(item);
await newTodo.press('Enter');
}
const firstTodo = page.getByTestId('todo-item').nth(0);
const secondTodo = page.getByTestId('todo-item').nth(1);
const firstTodoCheckbox = firstTodo.getByRole('checkbox');
await firstTodoCheckbox.check();
await expect(firstTodo).toHaveClass('completed');
await expect(secondTodo).not.toHaveClass('completed');
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
await firstTodoCheckbox.uncheck();
await expect(firstTodo).not.toHaveClass('completed');
await expect(secondTodo).not.toHaveClass('completed');
await checkNumberOfCompletedTodosInLocalStorage(page, 0);
});
test('should allow me to edit an item', async ({ page }) => {
await createDefaultTodos(page);
const todoItems = page.getByTestId('todo-item');
const secondTodo = todoItems.nth(1);
await secondTodo.dblclick();
await expect(secondTodo.getByRole('textbox', { name: 'Edit' })).toHaveValue(TODO_ITEMS[1]);
await secondTodo.getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
await secondTodo.getByRole('textbox', { name: 'Edit' }).press('Enter');
// Explicitly assert the new text value.
await expect(todoItems).toHaveText([
TODO_ITEMS[0],
'buy some sausages',
TODO_ITEMS[2]
]);
await checkTodosInLocalStorage(page, 'buy some sausages');
});
});
test.describe('Editing', () => {
test.beforeEach(async ({ page }) => {
await createDefaultTodos(page);
await checkNumberOfTodosInLocalStorage(page, 3);
});
test('should hide other controls when editing', async ({ page }) => {
const todoItem = page.getByTestId('todo-item').nth(1);
await todoItem.dblclick();
await expect(todoItem.getByRole('checkbox')).not.toBeVisible();
await expect(todoItem.locator('label', {
hasText: TODO_ITEMS[1],
})).not.toBeVisible();
await checkNumberOfTodosInLocalStorage(page, 3);
});
test('should save edits on blur', async ({ page }) => {
const todoItems = page.getByTestId('todo-item');
await todoItems.nth(1).dblclick();
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).dispatchEvent('blur');
await expect(todoItems).toHaveText([
TODO_ITEMS[0],
'buy some sausages',
TODO_ITEMS[2],
]);
await checkTodosInLocalStorage(page, 'buy some sausages');
});
test('should trim entered text', async ({ page }) => {
const todoItems = page.getByTestId('todo-item');
await todoItems.nth(1).dblclick();
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill(' buy some sausages ');
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Enter');
await expect(todoItems).toHaveText([
TODO_ITEMS[0],
'buy some sausages',
TODO_ITEMS[2],
]);
await checkTodosInLocalStorage(page, 'buy some sausages');
});
test('should remove the item if an empty text string was entered', async ({ page }) => {
const todoItems = page.getByTestId('todo-item');
await todoItems.nth(1).dblclick();
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('');
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Enter');
await expect(todoItems).toHaveText([
TODO_ITEMS[0],
TODO_ITEMS[2],
]);
});
test('should cancel edits on escape', async ({ page }) => {
const todoItems = page.getByTestId('todo-item');
await todoItems.nth(1).dblclick();
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).fill('buy some sausages');
await todoItems.nth(1).getByRole('textbox', { name: 'Edit' }).press('Escape');
await expect(todoItems).toHaveText(TODO_ITEMS);
});
});
test.describe('Counter', () => {
test('should display the current number of todo items', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
// create a todo count locator
const todoCount = page.getByTestId('todo-count')
await newTodo.fill(TODO_ITEMS[0]);
await newTodo.press('Enter');
await expect(todoCount).toContainText('1');
await newTodo.fill(TODO_ITEMS[1]);
await newTodo.press('Enter');
await expect(todoCount).toContainText('2');
await checkNumberOfTodosInLocalStorage(page, 2);
});
});
test.describe('Clear completed button', () => {
test.beforeEach(async ({ page }) => {
await createDefaultTodos(page);
});
test('should display the correct text', async ({ page }) => {
await page.locator('.todo-list li .toggle').first().check();
await expect(page.getByRole('button', { name: 'Clear completed' })).toBeVisible();
});
test('should remove completed items when clicked', async ({ page }) => {
const todoItems = page.getByTestId('todo-item');
await todoItems.nth(1).getByRole('checkbox').check();
await page.getByRole('button', { name: 'Clear completed' }).click();
await expect(todoItems).toHaveCount(2);
await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[2]]);
});
test('should be hidden when there are no items that are completed', async ({ page }) => {
await page.locator('.todo-list li .toggle').first().check();
await page.getByRole('button', { name: 'Clear completed' }).click();
await expect(page.getByRole('button', { name: 'Clear completed' })).toBeHidden();
});
});
test.describe('Persistence', () => {
test('should persist its data', async ({ page }) => {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
for (const item of TODO_ITEMS.slice(0, 2)) {
await newTodo.fill(item);
await newTodo.press('Enter');
}
const todoItems = page.getByTestId('todo-item');
const firstTodoCheck = todoItems.nth(0).getByRole('checkbox');
await firstTodoCheck.check();
await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[1]]);
await expect(firstTodoCheck).toBeChecked();
await expect(todoItems).toHaveClass(['completed', '']);
// Ensure there is 1 completed item.
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
// Now reload.
await page.reload();
await expect(todoItems).toHaveText([TODO_ITEMS[0], TODO_ITEMS[1]]);
await expect(firstTodoCheck).toBeChecked();
await expect(todoItems).toHaveClass(['completed', '']);
});
});
test.describe('Routing', () => {
test.beforeEach(async ({ page }) => {
await createDefaultTodos(page);
// make sure the app had a chance to save updated todos in storage
// before navigating to a new view, otherwise the items can get lost :(
// in some frameworks like Durandal
await checkTodosInLocalStorage(page, TODO_ITEMS[0]);
});
test('should allow me to display active items', async ({ page }) => {
const todoItem = page.getByTestId('todo-item');
await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
await page.getByRole('link', { name: 'Active' }).click();
await expect(todoItem).toHaveCount(2);
await expect(todoItem).toHaveText([TODO_ITEMS[0], TODO_ITEMS[2]]);
});
test('should respect the back button', async ({ page }) => {
const todoItem = page.getByTestId('todo-item');
await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
await test.step('Showing all items', async () => {
await page.getByRole('link', { name: 'All' }).click();
await expect(todoItem).toHaveCount(3);
});
await test.step('Showing active items', async () => {
await page.getByRole('link', { name: 'Active' }).click();
});
await test.step('Showing completed items', async () => {
await page.getByRole('link', { name: 'Completed' }).click();
});
await expect(todoItem).toHaveCount(1);
await page.goBack();
await expect(todoItem).toHaveCount(2);
await page.goBack();
await expect(todoItem).toHaveCount(3);
});
test('should allow me to display completed items', async ({ page }) => {
await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
await page.getByRole('link', { name: 'Completed' }).click();
await expect(page.getByTestId('todo-item')).toHaveCount(1);
});
test('should allow me to display all items', async ({ page }) => {
await page.getByTestId('todo-item').nth(1).getByRole('checkbox').check();
await checkNumberOfCompletedTodosInLocalStorage(page, 1);
await page.getByRole('link', { name: 'Active' }).click();
await page.getByRole('link', { name: 'Completed' }).click();
await page.getByRole('link', { name: 'All' }).click();
await expect(page.getByTestId('todo-item')).toHaveCount(3);
});
test('should highlight the currently applied filter', async ({ page }) => {
await expect(page.getByRole('link', { name: 'All' })).toHaveClass('selected');
//create locators for active and completed links
const activeLink = page.getByRole('link', { name: 'Active' });
const completedLink = page.getByRole('link', { name: 'Completed' });
await activeLink.click();
// Page change - active items.
await expect(activeLink).toHaveClass('selected');
await completedLink.click();
// Page change - completed items.
await expect(completedLink).toHaveClass('selected');
});
});
async function createDefaultTodos(page: Page) {
// create a new todo locator
const newTodo = page.getByPlaceholder('What needs to be done?');
for (const item of TODO_ITEMS) {
await newTodo.fill(item);
await newTodo.press('Enter');
}
}
async function checkNumberOfTodosInLocalStorage(page: Page, expected: number) {
return await page.waitForFunction(e => {
return JSON.parse(localStorage['react-todos']).length === e;
}, expected);
}
async function checkNumberOfCompletedTodosInLocalStorage(page: Page, expected: number) {
return await page.waitForFunction(e => {
return JSON.parse(localStorage['react-todos']).filter((todo: any) => todo.completed).length === e;
}, expected);
}
async function checkTodosInLocalStorage(page: Page, title: string) {
return await page.waitForFunction(t => {
return JSON.parse(localStorage['react-todos']).map((todo: any) => todo.title).includes(t);
}, title);
}