diff --git a/.env_test.example b/.env_test.example
new file mode 100644
index 00000000..248c2c5d
--- /dev/null
+++ b/.env_test.example
@@ -0,0 +1,6 @@
+POSTGRES_HOST=localhost
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
+POSTGRES_PORT=5432
+POSTGRES_DBNAME=psqlpy_test
+POSTGRES_CERT_FILE=/home/runner/work/_temp/pgdata/server.crt
\ No newline at end of file
diff --git a/python/tests/conftest.py b/python/tests/conftest.py
index 31cb31e1..a6ea6e8e 100644
--- a/python/tests/conftest.py
+++ b/python/tests/conftest.py
@@ -1,6 +1,7 @@
 import os
 import random
 from typing import AsyncGenerator
+from urllib import parse
 
 import pytest
 from psqlpy import ConnectionPool, Cursor
@@ -78,6 +79,17 @@ def map_parameters_table_name() -> str:
     return random_string()
 
 
+@pytest.fixture
+def dsn(
+    postgres_host: str,
+    postgres_user: str,
+    postgres_password: str,
+    postgres_port: int,
+    postgres_dbname: str,
+) -> str:
+    return f"postgres://{postgres_user}:{parse.quote(postgres_password)}@{postgres_host}:{postgres_port}/{postgres_dbname}"
+
+
 @pytest.fixture
 def number_database_records() -> int:
     return random.randint(10, 35)
diff --git a/python/tests/test_connection_pool.py b/python/tests/test_connection_pool.py
index dee61e86..8ada318f 100644
--- a/python/tests/test_connection_pool.py
+++ b/python/tests/test_connection_pool.py
@@ -15,29 +15,23 @@
 pytestmark = pytest.mark.anyio
 
 
-async def test_connect_func() -> None:
+async def test_connect_func(dsn: str) -> None:
     """Test that connect function makes new connection pool."""
-    pg_pool = connect_pool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-    )
+    pg_pool = connect_pool(dsn=dsn)
 
     conn = await pg_pool.connection()
     await conn.execute("SELECT 1")
 
 
-async def test_pool_dsn_startup() -> None:
+async def test_pool_dsn_startup(dsn: str) -> None:
     """Test that connection pool can startup with dsn."""
-    pg_pool = ConnectionPool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-    )
+    pg_pool = ConnectionPool(dsn=dsn)
 
     conn = await pg_pool.connection()
     await conn.execute("SELECT 1")
 
 
-async def test_pool_connection(
-    psql_pool: ConnectionPool,
-) -> None:
+async def test_pool_connection(psql_pool: ConnectionPool) -> None:
     """Test that ConnectionPool can return single connection from the pool."""
     connection = await psql_pool.connection()
     assert isinstance(connection, Connection)
@@ -53,9 +47,10 @@ async def test_pool_connection(
 )
 async def test_pool_conn_recycling_method(
     conn_recycling_method: ConnRecyclingMethod,
+    dsn: str,
 ) -> None:
     pg_pool = ConnectionPool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
+        dsn=dsn,
         conn_recycling_method=conn_recycling_method,
     )
 
@@ -63,27 +58,18 @@ async def test_pool_conn_recycling_method(
     await conn.execute("SELECT 1")
 
 
-async def test_build_pool_failure() -> None:
+async def test_build_pool_failure(dsn: str) -> None:
     with pytest.raises(expected_exception=ConnectionPoolConfigurationError):
-        ConnectionPool(
-            dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-            connect_timeout_nanosec=12,
-        )
+        ConnectionPool(dsn=dsn, connect_timeout_nanosec=12)
+
     with pytest.raises(expected_exception=ConnectionPoolConfigurationError):
-        ConnectionPool(
-            dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-            connect_timeout_nanosec=12,
-        )
+        ConnectionPool(dsn=dsn, connect_timeout_nanosec=12)
+
     with pytest.raises(expected_exception=ConnectionPoolConfigurationError):
-        ConnectionPool(
-            dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-            keepalives_idle_nanosec=12,
-        )
+        ConnectionPool(dsn=dsn, keepalives_idle_nanosec=12)
+
     with pytest.raises(expected_exception=ConnectionPoolConfigurationError):
-        ConnectionPool(
-            dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-            keepalives_interval_nanosec=12,
-        )
+        ConnectionPool(dsn=dsn, keepalives_interval_nanosec=12)
 
 
 @pytest.mark.parametrize(
@@ -96,12 +82,18 @@ async def test_build_pool_failure() -> None:
 )
 async def test_pool_target_session_attrs(
     target_session_attrs: TargetSessionAttrs,
+    postgres_host: str,
+    postgres_user: str,
+    postgres_password: str,
+    postgres_port: int,
+    postgres_dbname: str,
 ) -> None:
     pg_pool = ConnectionPool(
-        db_name="psqlpy_test",
-        host="localhost",
-        username="postgres",
-        password="postgres",  # noqa: S106
+        db_name=postgres_dbname,
+        host=postgres_host,
+        port=postgres_port,
+        username=postgres_user,
+        password=postgres_password,
         target_session_attrs=target_session_attrs,
     )
 
@@ -122,21 +114,17 @@ async def test_pool_target_session_attrs(
 )
 async def test_pool_load_balance_hosts(
     load_balance_hosts: LoadBalanceHosts,
+    dsn: str,
 ) -> None:
-    pg_pool = ConnectionPool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-        load_balance_hosts=load_balance_hosts,
-    )
+    pg_pool = ConnectionPool(dsn=dsn, load_balance_hosts=load_balance_hosts)
 
     conn = await pg_pool.connection()
     await conn.execute("SELECT 1")
 
 
-async def test_close_connection_pool() -> None:
+async def test_close_connection_pool(dsn: str) -> None:
     """Test that `close` method closes connection pool."""
-    pg_pool = ConnectionPool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-    )
+    pg_pool = ConnectionPool(dsn=dsn)
 
     conn = await pg_pool.connection()
     await conn.execute("SELECT 1")
@@ -147,11 +135,9 @@ async def test_close_connection_pool() -> None:
         await pg_pool.connection()
 
 
-async def test_connection_pool_as_context_manager() -> None:
+async def test_connection_pool_as_context_manager(dsn: str) -> None:
     """Test connection pool as context manager."""
-    with ConnectionPool(
-        dsn="postgres://postgres:postgres@localhost:5432/psqlpy_test",
-    ) as pg_pool:
+    with ConnectionPool(dsn=dsn) as pg_pool:
         conn = await pg_pool.connection()
         res = await conn.execute("SELECT 1")
         assert res.result()