fix setup-testdb script (#13403)

core/scripts/setup_testdb.sh

@@ -1,5 +1,9 @@
 #/bin/sh
 
+function exit_error {
+    echo "Error: $1"
+    exit 1
+}
 # Create a new user and database for development
 # This script is intended to be run on a local development machine
 tdir=$(mktemp -d -t db-dev-user)
@@ -9,6 +13,7 @@ password="insecurepassword"
 database="chainlink_development_test"
 # here document for the SQL commands
 cat << EOF > $tdir/db-dev-user.sql
+DROP DATABASE IF EXISTS $database;
 -- create a new user and database for development if they don't exist
 DO \$\$
 BEGIN
@@ -22,6 +27,7 @@ WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '$database')\gexec
 -- Grant all privileges on the database to the user
 ALTER DATABASE $database OWNER TO $username;
 GRANT ALL PRIVILEGES ON DATABASE "$database" TO "$username";
+ALTER USER $username CREATEDB;
 
 -- Create a pristine database for testing
 SELECT 'CREATE DATABASE chainlink_test_pristine WITH OWNER $username;' 
@@ -38,18 +44,20 @@ echo "##########################################################################
 echo "##########################################################################################################"
 echo ""
 # Run the SQL commands
-psql -U postgres -h localhost -f $tdir/db-dev-user.sql
+psql -U postgres -h localhost -f $tdir/db-dev-user.sql || exit_error "Failed to create user $username and database $database"
 
 
 #test the connection
-PGPASSWORD=$password psql -U $username -h localhost -d $database -c "SELECT 1" && echo "Connection successful" || echo "Connection failed"
+PGPASSWORD=$password psql -U $username -h localhost -d $database -c "SELECT 1"  ||  exit_error "Connection failed for $username to $database"
 
-db_url=$(echo "CL_DATABASE_URL=postgresql://chainlink_dev:insecurepassword@localhost:5432/chainlink_development_test")
+
+
+db_url=$(echo "CL_DATABASE_URL=postgresql://$username:$password@localhost:5432/$database?sslmode=disable")
 echo $db_url
 repo=$(git rev-parse --show-toplevel)
 pushd $repo
 export $db_url 
-make testdb || echo "Failed to create test database"
+make testdb || exit_error "Failed to create test database"
 popd
 
 # Set the database URL in the .dbenv file