test(todo_app_sqlite): add e2e tests (#1448)

[agilarity]

Add E2E Testing

This example demonstrates e2e testing with Rust using executable requirements.

Testing Stack

	Role	Description
Cucumber	Test Runner	Run Gherkin specifications as Rust tests
Fantoccini	Browser Client	Interact with web pages through WebDriver
Cargo Leptos	Build Tool	Compile example and start the server and end-2-end tests
chromedriver	WebDriver	Provide WebDriver for Chrome

Testing Organization

Testing is organized around what a user can do and see/not see.

Here is a brief overview of how things fit together.

features                    # Specify test scenarios
tests
├── fixtures
│   ├── action.rs           # Perform a user action (click, type, etc.)
│   ├── check.rs            # Assert what a user can see/not see
│   ├── find.rs             # Query page elements
│   ├── mod.rs
│   └── world
│       ├── action_steps.rs # Map Gherkin steps to user actions
│       ├── check_steps.rs  # Map Gherkin steps to user expectations
│       └── mod.rs
└── manage_todos.rs         # Test main 

The above was copied from the e2e/README.md

Notes

• Closes test(todo_app_sqlite): add e2e tests #1448
• I was pleased to see that there are no flaky tests.