I have a problem with some css selector (I have only one way to find an element if I use JS commands so only CSS selector is available for me) The page looks like this:

<div class='test'>
some_text
<span> some_other_text </span>
</div>

And I need to get some_text without getting "some_other_text"; I tried to use: By.CssSelector("div[class='test'] :not(span)") >> it returns all text; By.CssSelector("div[class='test'] span:not(last-child)") >> it returns only "some_other_text"; By.CssSelector("div[class='test'] span:not(:last-child)") >> it returns only "some_other_text"; By.CssSelector("div[class='test']:not(:last-child)") >> it returns only "some_other_text";

is there any way to do what I need? could anyone help me , please?