When copying some text, under certain circumstances, empty style (or font) tags are created. This test checks that there is no empty <font> tag after 'foo' and before 'bar'.

After copy:
| "\n"
| <div>
|   class="editing"
|   id="test"
|   "\n<#selection-anchor>foo\n"
|   <div>
|     style="color: rgb(255, 0, 0);"
|     "\n"
|     <div>
|       "bar<#selection-focus>"
|     "\n"
|   "\n"
| "\n"

After paste:
| "\n"
| <div>
|   class="editing"
|   id="test"
|   "foo"
|   <div>
|     style="color: rgb(255, 0, 0);"
|     "bar<#selection-caret>"
|   <div>
|     style="color: rgb(255, 0, 0);"
|     "\n"
|   "\n"
| "\n"