feat: raise a more specific exception on timeout

src/pytest_docker/plugin.py

@@ -10,6 +10,16 @@
 import pytest
 
 
+class PytestDockerError(Exception):
+    """Base pytest-docker exception."""
+
+
+class ServiceTimeoutError(PytestDockerError):
+    """
+    Timed out while waiting for Docker service(s).
+    """
+
+
 def execute(command, success_codes=(0,)):
     """Run a shell command."""
     try:
@@ -105,7 +115,7 @@ def wait_until_responsive(self, check, timeout, pause, clock=timeit.default_time
             time.sleep(pause)
             now = clock()
 
-        raise Exception("Timeout reached while waiting on service!")
+        raise ServiceTimeoutError("Timeout reached while waiting on service!")
 
 
 def str_to_list(arg):

tests/test_docker_services.py

@@ -5,6 +5,7 @@
 from pytest_docker.plugin import (
     DockerComposeExecutor,
     Services,
+    ServiceTimeoutError,
     get_docker_services,
     get_cleanup_command,
     get_setup_command,
@@ -166,7 +167,7 @@ def test_wait_until_responsive_timeout():
             compose_project_name="pytest123",
         )
         services = Services(docker_compose)
-        with pytest.raises(Exception) as exc:
+        with pytest.raises(ServiceTimeoutError) as exc:
             print(
                 services.wait_until_responsive(
                     check=lambda: False, timeout=3.0, pause=1.0, clock=clock