golang fmt and test coverage git pre-commit hook

pre-commit.golang.sample

#!/bin/sh

# Format Go code
gofiles=$(find . -name "*.go" | tr '\n' ' ')
[ -z "$gofiles" ] && exit 0

unformatted=$(gofmt -l $gofiles)
if [ -z "$unformatted" ]; then
    echo "All Go files are formatted correctly."
else
    echo >&2 "Go files are not formatted:"
    echo >&2 "$unformatted"
    exit 1
fi

# Run Go tests and check coverage
if ! go test -cover ./... ; then
  echo "Go tests failed, aborting commit"
  exit 1
fi

# Check that coverage is above a certain threshold
COVERAGE=$(go test -cover ./... | grep -Eo 'coverage: [0-9]+\.[0-9]+' | sed 's/coverage: //g' | awk '{total+=$1; count+=1} END {print total/count}')
TARGET_COVERAGE=80.0
if awk -v n1="$COVERAGE" -v n2="$TARGET_COVERAGE" 'BEGIN { exit !(n1 < n2) }'; then
  echo "Code coverage is too low ($COVERAGE%). Target is $TARGET_COVERAGE%, aborting commit."
  exit 1
fi

# If we reached here, then all tests passed, code is formatted, and coverage is sufficient
exit 0

Make sure you have awk present on your system