# Tests $5$ points: Tests with loop

# First, a graph consisting only of a loop.

ta $=$ Task$(\text{'}$a$\text{'},1.)$

tb $=$ Task$(\text{'}$b$\text{'},1.)$

tc $=$ Task$(\text{'}$c$\text{'},2.)$

s $=$ TimedScheduler$()$

s$.$add$\_$task$($ta$,[$tb$])$

s$.$add$\_$task$($tb$,[$tc$])$

s$.$add$\_$task$($tc$,[$ta$])$

loop $=$ False

try:

s$.$fast$\_$compute$\_$schedule$()$

except DependencyLoop:

loop $=$ True

assert loop, "Loop should be true"