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openfoodnetwork/script/rspec-slow-repeat
2022-10-27 11:19:55 +02:00

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#!/bin/bash
#
# If you suspect that a spec becomes flaky on slow machines:
#
# ./script/rspec-slow-repeat 10 spec/system/some_flaky_spec.rb
#
# You can use the resulting pass rate to asses if your code changes fixed it
# or not. In the end I would run a spec 100 times to be sure it's stable.
if [ "$#" -lt 1 ]; then
echo "Usage: $0 <n> [rspec params]"
echo "Example: $0 30 spec/system/admin/order_cycles/simple_spec.rb:202"
exit 1
fi
n="$1"
passed=0
# Check via uname the environment we are running in to get the number of cores
if [[ "`uname`" == "Darwin" ]]; then
processors="`sysctl -n hw.ncpu.`"
env="mac"
else
processors="`cat /proc/cpuinfo | grep -c processor`"
env="linux"
fi
echo "Running $n times on a $env with $processors cores"
for i in `seq $processors`; do
yes > /dev/null &
done
export RUBY_DEBUG_ENABLE=0
export SPRING_QUIET=true
for i in `seq "$n"`; do
if ./bin/rspec "${@:2}" >> tmp/rspec.log; then
echo "Pass."
(( passed++ ))
else
echo " !!! Fail !!!"
fi
done
killall yes
pass_rate="$(( passed * 100 / n))"
echo "$passed of $n passed ($pass_rate%)"