Check that we still work with previous data when changing password

Fix also postgresql_cmd function that is often called with interactive
input using <<< but podman run is run in non-interactive mode, resulting
in the SQL commands to not proceed and this issue being ignored.

Author: hhorak

test/run_test

@@ -107,7 +107,7 @@ function get_ip_from_cid() {
 }
 
 function postgresql_cmd() {
-  docker run --rm -e PGPASSWORD="$PASS" "$IMAGE_NAME" psql "postgresql://$PGUSER@$CONTAINER_IP:5432/${DB-db}" "$@"
+  docker run --rm -i -e PGPASSWORD="$PASS" "$IMAGE_NAME" psql -v ON_ERROR_STOP=1 "postgresql://$PGUSER@$CONTAINER_IP:5432/${DB-db}" "$@"
 }
 
 function test_connection() {
@@ -138,7 +138,7 @@ function test_connection() {
 function test_postgresql() {
   local ret=0
   echo "  Testing PostgreSQL"
-  postgresql_cmd <<< "CREATE EXTENSION 'uuid-ossp';" || ret=1 # to test contrib package
+  postgresql_cmd <<< "CREATE EXTENSION \"uuid-ossp\";" || ret=1 # to test contrib package
   postgresql_cmd <<< "CREATE TABLE tbl (col1 VARCHAR(20), col2 VARCHAR(20));" || ret=2
   postgresql_cmd <<< "INSERT INTO tbl VALUES ('foo1', 'bar1');" || ret=3
   postgresql_cmd <<< "INSERT INTO tbl VALUES ('foo2', 'bar2');" || ret=4
@@ -631,6 +631,7 @@ $volume_options
 
   assert_login_access ${user} ${password} true || ret=4
   assert_login_access 'postgres' ${admin_password} true || ret=5
+  test_postgresql || ret 55
 
   echo "  Changing passwords"
 
@@ -662,6 +663,9 @@ $volume_options
   assert_login_access 'postgres' "NEW_${admin_password}" true || ret=10
   assert_login_access 'postgres' ${admin_password} false || ret=11
 
+  # check that we still work with the original volume
+  postgresql_cmd -At -c  "SELECT * FROM tbl;" | grep bar3 || ret=12
+
   if [ $ret -eq 0 ]; then
     echo "  Success!"
   fi