diff --git a/tests/unit/plugins/module_utils/test_mariadb_replication.py b/tests/unit/plugins/module_utils/test_mariadb_replication.py
index 3599ad0..4082ad2 100644
--- a/tests/unit/plugins/module_utils/test_mariadb_replication.py
+++ b/tests/unit/plugins/module_utils/test_mariadb_replication.py
@@ -16,6 +16,8 @@ class MockCursor:
         self.executed_queries = []
 
     def execute(self, query):
+        if self.status == "ERROR":
+            raise Exception("Mocked execution error")
         self.executed_queries.append(query)
 
     def fetchone(self):
@@ -44,7 +46,7 @@ def test_uses_replica_terminology(f_output, c_output, c_ret_type):
         (None, None, "START GROUP_REPLICATION "),
         ("repl_user", None, "START GROUP_REPLICATION USER='repl_user'"),
         (None, "repl_pass", "START GROUP_REPLICATION PASSWORD='repl_pass'"),
-        ("repl_user", "repl_pass", "START GROUP_REPLICATION USER='repl_user', PASSWORD='repl_pass'"),
+        ("repl_user", "repl_pass", "START GROUP_REPLICATION USER='repl_user',PASSWORD='repl_pass'"),
     ]
 )
 def test_start_group_replication(user, password, expected_query):
@@ -58,9 +60,9 @@ def test_start_group_replication(user, password, expected_query):
 
     chm = []
     if user:
-        chm.append(" USER='%s'" % user)
+        chm.append("USER='%s'" % user)
     if password:
-        chm.append(" PASSWORD='%s'" % password)
+        chm.append("PASSWORD='%s'" % password)
 
     result = startgroupreplication(module, cursor, chm, False)
 
diff --git a/tests/unit/plugins/module_utils/test_mysql_replication.py b/tests/unit/plugins/module_utils/test_mysql_replication.py
index 8768b1e..a4f906c 100644
--- a/tests/unit/plugins/module_utils/test_mysql_replication.py
+++ b/tests/unit/plugins/module_utils/test_mysql_replication.py
@@ -16,6 +16,8 @@ class MockCursor:
         self.executed_queries = []
 
     def execute(self, query):
+        if self.status == "ERROR":
+            raise Exception("Mocked execution error")
         self.executed_queries.append(query)
 
     def fetchone(self):
@@ -48,7 +50,7 @@ def test_uses_replica_terminology(f_output, c_output, c_ret_type):
         (None, None, "START GROUP_REPLICATION "),
         ("repl_user", None, "START GROUP_REPLICATION USER='repl_user'"),
         (None, "repl_pass", "START GROUP_REPLICATION PASSWORD='repl_pass'"),
-        ("repl_user", "repl_pass", "START GROUP_REPLICATION USER='repl_user', PASSWORD='repl_pass'"),
+        ("repl_user", "repl_pass", "START GROUP_REPLICATION USER='repl_user',PASSWORD='repl_pass'"),
     ]
 )
 def test_start_group_replication(user, password, expected_query):