better message when running tests without installing package

3 files changed, 17 insertions, 2 deletions

diff --git a/README.rst b/README.rst
index 8c5d7cd..2fe1563 100644
--- a/README.rst
+++ b/README.rst
@@ -331,3 +331,11 @@ If you provide a True value to the optional help_all parameter for
 then the commandline is checked for the option ``--help-all`` and the global
 help is printed, follow by the help for each sub parsers, separated by a dashed
 line.
+
+Testing
+-------
+
+Testing is done using the `tox <https://pypi.python.org/pypi/tox>`_, which
+uses `virtualenv <https://pypi.python.org/pypi/virtualenv>`_ and
+`pytest <http://pytest.org/latest/>`_.
+
diff --git a/test/test_argparse.py b/test/test_argparse.py
index 6c3d765..9cc818b 100644
--- a/test/test_argparse.py
+++ b/test/test_argparse.py
@@ -3,7 +3,11 @@
 
 import pytest
 
-from ruamel.std.argparse import argparse, CountAction, SmartFormatter
+try:
+    from ruamel.std.argparse import argparse, CountAction, SmartFormatter
+except ImportError:
+    print("you have to install ruamel.std.argparse to run the tests")
+
 from textwrap import dedent
 
 
diff --git a/test/test_program.py b/test/test_program.py
index 4ac1706..3d98b03 100644
--- a/test/test_program.py
+++ b/test/test_program.py
@@ -7,7 +7,10 @@ from __future__ import print_function
 import sys
 import pytest
 
-from ruamel.std.argparse import ProgramBase, option, sub_parser, version
+try:
+    from ruamel.std.argparse import ProgramBase, option, sub_parser, version
+except ImportError:
+    print("you have to install ruamel.std.argparse to run the tests")
 
 
 class Program(ProgramBase):