Add simple cache to speedup execution

[102]

This results in the following test execution time being reduced (while it also allows to add extra tests):

Before

ℹ tests 13
ℹ suites 0
ℹ pass 13
ℹ fail 0
ℹ cancelled 0
ℹ skipped 0
ℹ todo 0
ℹ duration_ms 14988.006458

vs
After

ℹ tests 13
ℹ suites 0
ℹ pass 13
ℹ fail 0
ℹ cancelled 0
ℹ skipped 0
ℹ todo 0
ℹ duration_ms 48.227042