Browser testing with Dusk in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Laravel Dusk used for?

Laravel Dusk is a tool for browser testing. It lets you automate browser actions to check if your web app works correctly from a user's view.

beginner

How do you start a Dusk test in Laravel?

You create a test class using the command <code>php artisan dusk:make TestName</code>. Then you write browser actions inside the test methods.

beginner

What method do you use to visit a page in a Dusk test?

Use $browser->visit('/url') to open a page in the browser during a test.

beginner

How can you check if a page contains specific text in Dusk?

Use $browser->assertSee('text') to confirm the page shows the given text.

beginner

Why is browser testing important in web development?

Browser testing checks if your app works well for users in real browsers. It finds problems that unit tests might miss, like layout or interaction issues.

Which command creates a new Dusk test in Laravel?

A php artisan test:dusk TestName

B php artisan make:test TestName

C php artisan dusk:make TestName

D php artisan dusk:create TestName

The correct command to create a Dusk test is php artisan dusk:make TestName.

What does $browser->visit('/home') do in a Dusk test?

A Opens the '/home' page in the browser

B Closes the browser

C Checks if '/home' text is visible

D Clicks a button named 'home'

The visit method opens the specified URL in the browser during the test.

How do you verify that a page shows the text 'Welcome' in Dusk?

A $browser->seeText('Welcome')

B $browser->assertSee('Welcome')

C $browser->checkText('Welcome')

D $browser->verify('Welcome')

Use assertSee to check if the page contains specific text.

Which of these is NOT a benefit of browser testing with Dusk?

A Replacing all unit tests

B Testing user interactions in a real browser

C Finding layout problems

D Automating repetitive browser tasks

Dusk complements unit tests but does not replace them.

What is the default browser used by Laravel Dusk for testing?

A Firefox

B Safari

C Edge

D Chrome

Laravel Dusk uses a ChromeDriver instance to run tests in a Chrome browser by default.

Explain how you would write a simple Dusk test to check if the homepage loads and shows the text 'Laravel'.

Think about the steps to open a page and check for text.

Describe why browser testing with Dusk is useful compared to just running unit tests.

Consider what unit tests cannot check.

Practice

1. What is the primary purpose of Laravel Dusk in web development?

easy

A. To optimize website images for faster loading

B. To automate browser testing by simulating user actions

C. To generate API documentation

D. To create database migrations automatically

Solution

1. Step 1: Understand Laravel Dusk's role

   Laravel Dusk is designed to automate browser testing by controlling a real browser to simulate user actions like clicking and typing.

2. Step 2: Compare options with Dusk's purpose

   Options A, B, and C relate to optimization, database, and documentation, which are unrelated to browser testing.

3. Final Answer:

   To automate browser testing by simulating user actions -> Option B

4. Quick Check:

   Browser automation = To automate browser testing by simulating user actions [OK]

Hint: Remember: Dusk controls browsers to test user actions [OK]

Common Mistakes:

• Confusing Dusk with database tools
• Thinking Dusk generates documentation
• Assuming Dusk optimizes assets

2. Which of the following is the correct way to start a browser test with Laravel Dusk?

easy

A. $browser->navigate('/home')->expectText('Welcome');

B. $browser->open('/home')->checkText('Welcome');

C. $browser->goTo('/home')->verifyText('Welcome');

D. $browser->visit('/home')->assertSee('Welcome');

Solution

1. Step 1: Recall Laravel Dusk syntax for visiting pages

   The correct method to visit a page is visit(), and to check text is assertSee().

2. Step 2: Identify correct method names

   Options B, C, and D use incorrect method names like open(), goTo(), and navigate(), which do not exist in Dusk.

3. Final Answer:

   $browser->visit('/home')->assertSee('Welcome'); -> Option D

4. Quick Check:

   Use visit() and assertSee() in Dusk [OK]

Hint: Use visit() to open page and assertSee() to check text [OK]

Common Mistakes:

• Using non-existent methods like open() or goTo()
• Confusing assertSee() with verifyText()
• Mixing up method chaining order

3. Given the following Dusk test code, what will be the result?

$browser->visit('/login')
        ->type('email', '[e-mail]')
        ->type('password', 'secret')
        ->press('Login')
        ->assertPathIs('/dashboard');

medium

A. The test will pass if login redirects to /dashboard

B. The test will fail because type() cannot fill inputs

C. The test will throw a syntax error

D. The test will pass even if the path is not /dashboard

Solution

1. Step 1: Analyze the test steps

   The test visits the login page, fills email and password fields, presses the Login button, then checks if the browser path is /dashboard.

2. Step 2: Understand Dusk behavior

   The type() method fills inputs correctly, and assertPathIs() verifies the current URL path. If login redirects to /dashboard, the test passes.

3. Final Answer:

   The test will pass if login redirects to /dashboard -> Option A

4. Quick Check:

   Correct input and path check = The test will pass if login redirects to /dashboard [OK]

Hint: type() fills inputs; assertPathIs() checks URL path [OK]

Common Mistakes:

• Thinking type() cannot fill inputs
• Assuming assertPathIs() ignores path
• Confusing syntax errors with runtime failures

4. Identify the error in this Dusk test code snippet:

$browser->visit('/profile')
        ->type('name', 'John Doe')
        ->click('Save')
        ->assertSee('Profile updated');

medium

A. The method click() should be press() to click buttons

B. The type() method cannot fill text inputs

C. assertSee() cannot check text on the page

D. visit() method requires a full URL, not a path

Solution

1. Step 1: Review Dusk methods for clicking buttons

   In Laravel Dusk, to click a button by its text, the correct method is press(), not click().

2. Step 2: Validate other methods

   type() fills inputs, assertSee() checks text, and visit() accepts paths, so these are correct.

3. Final Answer:

   The method click() should be press() to click buttons -> Option A

4. Quick Check:

   Use press() for buttons, not click() [OK]

Hint: Use press() to click buttons, not click() [OK]

Common Mistakes:

• Using click() instead of press() for buttons
• Thinking type() can't fill inputs
• Believing visit() needs full URL

5. You want to test a form that has a dropdown with options 'Red', 'Green', and 'Blue'. Which Dusk method correctly selects 'Green' before submitting the form?

hard

A. $browser->pick('color', 'Green')->press('Submit');

B. $browser->choose('color', 'Green')->press('Submit');

C. $browser->select('color', 'Green')->press('Submit');

D. $browser->set('color', 'Green')->press('Submit');

Solution

1. Step 1: Recall the method to select dropdown options in Dusk

   The correct method to select an option from a dropdown is select().

2. Step 2: Verify other options are invalid

   Methods like choose(), pick(), and set() do not exist or are incorrect for dropdown selection in Dusk.

3. Final Answer:

   $browser->select('color', 'Green')->press('Submit'); -> Option C

4. Quick Check:

   Use select() for dropdowns in Dusk [OK]

Hint: Use select() to pick dropdown options before pressing buttons [OK]

Common Mistakes:

• Using choose() or pick() instead of select()
• Trying to set dropdown value with set()
• Forgetting to press the submit button