browser-testing

This skill activates when:

• User asks to test a web page or application
• User wants to automate browser interactions
• User needs to verify UI behavior
• User wants to automate form submission
• User needs to test form validation
• User mentions multi-step forms or wizards
• User wants to test login/signup flows

Navigation

```bash

browser-devtools-cli navigation go-to --url "https://example.com"

browser-devtools-cli navigation go-back

browser-devtools-cli navigation go-forward

browser-devtools-cli navigation reload

```

Interaction

```bash

browser-devtools-cli interaction click --selector "#button"

browser-devtools-cli interaction fill --selector "#input" --value "text"

browser-devtools-cli interaction select --selector "#dropdown" --value "option"

browser-devtools-cli interaction hover --selector "#element"

browser-devtools-cli interaction press-key --key "Enter"

browser-devtools-cli interaction scroll --mode bottom

browser-devtools-cli interaction drag --source-selector "#drag" --target-selector "#drop"

```

Content Capture

```bash

browser-devtools-cli content take-screenshot --name "screenshot"

browser-devtools-cli content get-as-html

browser-devtools-cli content get-as-text

browser-devtools-cli content save-as-pdf --name "page"

```

Synchronization

```bash

browser-devtools-cli sync wait-for-network-idle

```

Mocking & Stubbing

```bash

browser-devtools-cli stub mock-http-response --pattern "/api/" --response '{"status":200}'

browser-devtools-cli stub intercept-http-request --pattern "/api/" --modifications '{"headers":{}}'

browser-devtools-cli stub list

browser-devtools-cli stub clear --all

```

Code Execution

```bash

browser-devtools-cli run js-in-browser --script "document.title"

browser-devtools-cli run js-in-sandbox --code "return await page.title()"

```

1. Navigate: Go to the page under test
2. Wait: Ensure page is fully loaded
3. Interact: Click, fill, scroll as needed
4. Verify: Check page state, take screenshots
5. Document: Report results

Basic Form Fill

```bash

# Fill text input

browser-devtools-cli interaction fill \

--selector "#email" \

--value "test@example.com"

# Fill password

browser-devtools-cli interaction fill \

--selector "#password" \

--value "SecurePass123"

# Click submit

browser-devtools-cli interaction click \

--selector "button[type=submit]"

```

Select Dropdown

```bash

browser-devtools-cli interaction select \

--selector "#country" \

--value "US"

```

Checkbox/Radio

```bash

# Check checkbox

browser-devtools-cli interaction click \

--selector "#terms-checkbox"

# Select radio option

browser-devtools-cli interaction click \

--selector "input[name=plan][value=premium]"

```

Multi-Step Wizard

```bash

SESSION="--session-id wizard-test"

# Step 1: Personal Info

browser-devtools-cli $SESSION interaction fill --selector "#name" --value "John Doe"

browser-devtools-cli $SESSION interaction fill --selector "#email" --value "john@example.com"

browser-devtools-cli $SESSION interaction click --selector "#next-step"

# Wait for step 2

browser-devtools-cli $SESSION sync wait-for-network-idle

# Step 2: Address

browser-devtools-cli $SESSION interaction fill --selector "#address" --value "123 Main St"

browser-devtools-cli $SESSION interaction select --selector "#state" --value "CA"

browser-devtools-cli $SESSION interaction click --selector "#next-step"

# Step 3: Confirm

browser-devtools-cli $SESSION sync wait-for-network-idle

browser-devtools-cli $SESSION interaction click --selector "#submit"

```

Test Required Fields

```bash

# Submit empty form

browser-devtools-cli interaction click --selector "button[type=submit]"

# Check for error messages

browser-devtools-cli content get-as-text --selector ".error-message"

```

Test Invalid Input

```bash

# Invalid email

browser-devtools-cli interaction fill --selector "#email" --value "not-an-email"

browser-devtools-cli interaction click --selector "button[type=submit]"

# Check validation error

browser-devtools-cli content get-as-html --selector ".email-error"

```

```bash

SESSION="--session-id my-test"

# Navigate

browser-devtools-cli $SESSION navigation go-to --url "https://example.com"

# Interact

browser-devtools-cli $SESSION interaction click --selector ".login-btn"

browser-devtools-cli $SESSION interaction fill --selector "#email" --value "test@example.com"

# Verify

browser-devtools-cli $SESSION content take-screenshot --name "after-login"

# Cleanup

browser-devtools-cli session delete my-test

```

1. Use sessions for multi-step flows
2. Wait for network idle after navigation and actions
3. Take screenshots after important actions for verification
4. Use specific selectors to avoid wrong elements
5. Test empty submission first for validation testing
6. Clear fields before filling (use interaction fill which clears first)
7. Handle dynamic fields with wait strategies
8. Screenshot after errors for documentation