Girls, Was my girlfriends friend testing me?

My girlfriend and her friend were hanging out at her house last week. It was a pretty chill night and not too much was going on. I was laying on the couch and my girlfriend and her friend were standing over to the side of me talking. My gf’s friend was wearing a skirt that night and while they were talking she put her foot up on a chair to adjust her shoe. I glanced over and I could see up her skirt. She was like that for about 2 to 3 minutes. Did she forget I was there? Or was she testing me to see if I would look? Seems very odd.
Girls, Was my girlfriends friend testing me?
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