Update docs

ros2/cc_defs.bzl

@@ -119,6 +119,9 @@ def ros2_cpp_test(name, ros2_package_name = None, set_up_ament = True, idl_deps
 
  Adds common ROS 2 C++ definitions on top of a cc_test.
 
+ Please make sure that --sandbox_default_allow_network=false is set in .bazelrc.
+ This ensures proper network isolation.
+
  Args:
  name: A unique target name.
  ros2_package_name: If given, defines a ROS package name for the target.

ros2/py_defs.bzl

@@ -60,6 +60,9 @@ def ros2_py_binary(name, srcs, main, set_up_ament = False, **kwargs):
 def ros2_py_test(name, srcs, main, set_up_ament = True, **kwargs):
  """ Defines a ROS 2 Python test.
 
+ Please make sure that --sandbox_default_allow_network=false is set in .bazelrc.
+ This ensures proper network isolation.
+
  Args:
  name: A unique target name.
  srcs: List of source files.

ros2/test.bzl

@@ -8,9 +8,12 @@ load("@rules_ros2_pip_deps//:requirements.bzl", "requirement")
 def ros2_test(name, launch_file, nodes = None, deps = None, data = None, idl_deps = None, use_pytest = False, **kwargs):
  """ Defines a ROS 2 test.
 
- In case you don't need ROS 2 nodes for tests, but need ament setup such
- that e.g. plugins can work: use a lightweight macro ros2_cpp_test
- from //ros2:cc_defs.bzl.
+ For lighter options, e.g. you don't need a launch file, please take a look at:
+ * ros2_cpp_test in //ros2:cc_defs.bzl and
+ * ros2_py_test in //ros2:py_defs.bzl
+
+ Please make sure that --sandbox_default_allow_network=false is set in .bazelrc.
+ This ensures proper network isolation.
 
  Args:
  name: A unique target name.