How to test an image src and alt value using capybara?

@dalton_moen 

To test an image src and alt value using Capybara, you can use the following steps:

1. Use the page.find method to locate the image element on the page using a CSS selector or XPath expression.
2. Use the ['src'] property to extract the src attribute value of the image element.
3. Use the ['alt'] property to extract the alt attribute value of the image element.
4. Use the expect method to assert that the src and alt values match the expected values.

For example, if you have an image element with the following HTML:

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<img src="example.jpg" alt="Example Image">

You can write a Capybara test to verify the src and alt values like this:

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image_src = page.find('img')['src']
image_alt = page.find('img')['alt']

expect(image_src).to eq('example.jpg')
expect(image_alt).to eq('Example Image')

This test will locate the image element on the page, extract the src and alt values, and then verify that they match the expected values.