Selection attributes conversion test #462

Open the console. Watch the logged data.

Test 1

1. Put caret inside unstyled word.
2. Press Ctrl+I.

Expected results:

• <em>@@@@@@@</em> was inserted into editable.
• selection has the 'italic' attribute.
• selection anchor's parent node is <em>.

Test 2

1. Put caret inside bold word.
2. Press Ctrl+B.

Expected results:

• <em> element from previous test got removed.
• <strong> element got broken.
• selection doesn't have the 'bold' attribute.
• selection anchor's parent node is <p>.