Prevent pytest from performing any assertion rewriting outside the la…

…unch_testing plugin.

Signed-off-by: Michel Hidalgo <michel@ekumenlabs.com>

launch_testing/launch_testing/asserts/assert_exit_codes.py

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""
+A module providing exit code assertions.
+
+PYTEST_DONT_REWRITE
+"""
+
+
 import os
 
 from ..util import resolveProcesses

launch_testing/launch_testing/asserts/assert_output.py

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""
+A module providing process output assertions.
+
+PYTEST_DONT_REWRITE
+"""
+
+
 import os
 
 from osrf_pycommon.terminal_color import remove_ansi_escape_senquences

launch_testing/launch_testing/asserts/assert_sequential_output.py

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""
+A module providing process output sequence assertions.
+
+PYTEST_DONT_REWRITE
+"""
+
+
 from contextlib import contextmanager
 
 from ..util import resolveProcesses

launch_testing/launch_testing/io_handler.py

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""
+A module providing process IO capturing classes.
+
+PYTEST_DONT_REWRITE
+"""
+
+
 import threading
 
 from .asserts.assert_output import assertInStdout

launch_testing/launch_testing/proc_info_handler.py

@@ -12,6 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+"""
+A module providing process info capturing classes.
+
+PYTEST_DONT_REWRITE
+"""
+
+
 import threading
 from launch.actions import ExecuteProcess  # noqa
 from launch.events.process import ProcessExited