xpath search for divs where the id contains specific text

Question

html-agility-pack xpath

On my HTML page I have forty divs but I only want one div

Using agility pack to search and get all the divs with Ids I use this

"//div[@id]"

BUT how do I search for divs with Ids where the id contains the text "test"

<div id="outerdivtest1></div>"

Thanks

I've used this with for the CSS class:

//div[@class = 'atom']

I assume it's similar with id's.

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Accepted Answer

Use the contains function:

//div[contains(@id,'test')]