Preserve TESTDIR when using Github Actions (#79)

Co-authored-by: Stanislav Zhuk <[email protected]>

Author: weitzman

tests/test.bats

@@ -55,7 +55,13 @@ health_checks() {
 teardown() {
   set -eu -o pipefail
   ddev delete -Oy ${PROJNAME} >/dev/null 2>&1
-  [ "${TESTDIR}" != "" ] && rm -rf ${TESTDIR}
+  # Persist TESTDIR if running inside GitHub Actions. Useful for uploading test result artifacts
+  # See example at https://github.com/ddev/github-action-add-on-test#preserving-artifacts
+  if [ -n "${GITHUB_ENV:-}" ]; then
+    echo "TESTDIR=${TESTDIR}" >> "${GITHUB_ENV}"
+  else
+    [ "${TESTDIR}" != "" ] && rm -rf "${TESTDIR}"
+  fi
 }
 
 @test "install from directory" {