fix: update test.sh

Author: jsjoeio

ci/dev/test.sh

@@ -3,16 +3,22 @@ set -euo pipefail
 
 main() {
   cd "$(dirname "$0")/../.."
-  cd test
-  # We need to make sure the dependencies are installed
-  # because we run jest from node_modules
-  yarn
-  cd test-plugin
+  pushd test/test-plugin
   make -s out/index.js
   # We must keep jest in a sub-directory. See ../../test/package.json for more
   # information. We must also run it from the root otherwise coverage will not
   # include our source files.
-  cd "$OLDPWD"
+  popd
+  if [[ -d ./test/node_modules ]]; then
+    echo "Found node_modules directory under /test"
+  else
+    echo "Did not find node_modules directory under /test"
+    echo "...Installing test dependencies."
+    pushd test
+    yarn
+    popd
+  fi
+
   ./test/node_modules/.bin/jest "$@"
 }