Try it without the slash after the caret in the regexp version.
^test/
Here's a test:
~$ mkdir hg-folder-ignore
~$ cd hg-folder-ignore
~/hg-folder-ignore$ echo '^test/' > .hgignore
~/hg-folder-ignore$ hg init
~/hg-folder-ignore$ mkdir test
~/hg-folder-ignore$ touch test/ignoreme
~/hg-folder-ignore$ mkdir -p srcProject/test/TestManager
~/hg-folder-ignore$ touch srcProject/test/TestManager/dont-ignore
~/hg-folder-ignore$ hg stat
? .hgignore
? srcProject/test/TestManager/dont-ignore
Notice that ignoreme isn't showing up and dont-ignore is.
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