run jest multiple times

copy_tests.sh

#!/bin/sh

# Set your kibana home here
KIBANA_HOME=~/projects/kibana

# Set your kibana project here
KIBANA_PROJECT=x-pack/plugins/alerting/jest.config.js

# security_solution commented out
# KIBANA_PROJECT=x-pack/plugins/security_solution/jest.config.js

# Set your memory to a low value that barely passes so the typical memory saw tooths are small.
# When it doesn't leak set this to around 200 megs to prove it does not leak
# MAX_MEMORY=200

# When it does leak set this to around 2 gigs to get memory snapshots without issues.
MAX_MEMORY=2000

# Set this to true to activate "--inspect-brk" below 
CHROME_INSPECT=false

# Useage if no arguments
if [ $# -eq 0 ]; then
  echo "Usage is ./copy_tests.sh <test name>"
  exit 1
fi

# Check if file exists or not
if [[ ! -f $1 ]]; then
  echo "File does not exist"
  exit 1
fi

# Gets the directory of your first argument
DIR="$(dirname "${1}")"

# Remove all the copied scripts even if cntrl-C is pressed or other issues.
trap "rm $DIR/script_copy_test_*.test.ts" EXIT

# Loops max times and copy the single test in place
for i in {1..100}
do
  cp $1 $DIR/script_copy_test_$i.test.ts
done

pushd $KIBANA_HOME;
if [ "$CHROME_INSPECT" = true ] ;
then
  node --max-old-space-size=$MAX_MEMORY --inspect-brk --expose-gc ./node_modules/.bin/jest --verbose --runInBand --logHeapUsage --detectOpenHandles --no-cache --config $KIBANA_PROJECT $DIR/script_copy_test_*.ts;
else
  node --max-old-space-size=$MAX_MEMORY --expose-gc ./node_modules/.bin/jest --verbose --runInBand --logHeapUsage --detectOpenHandles --no-cache --config $KIBANA_PROJECT $DIR/script_copy_test_*.ts;
  # I uncomment and use this for perf timing based tests 
  # node --max-old-space-size=$MAX_MEMORY ./node_modules/.bin/jest --verbose --runInBand --config $KIBANA_PROJECT $DIR/script_copy_test_*.ts;
fi
popd;