tests: introduce unit testing
As a sample, this commit also includes a test suite for
ndn::ping::client::StatisticsCollector class.
refs #2795
Change-Id: Ia0c7522ae26bee1cc9d172c7379ab62f84325ed7
diff --git a/tests/README.md b/tests/README.md
new file mode 100644
index 0000000..ddcd0c5
--- /dev/null
+++ b/tests/README.md
@@ -0,0 +1,23 @@
+ndn-tool unit tests
+===================
+
+## Assumptions
+
+Unit tests for a tool `foo` should be placed in the folder `foo` and build script for the tool
+should define `foo-objects` that includes all object files for the tool, except object files
+defining main function.
+
+For example,
+
+ bld(features='cxx',
+ name='tool-subtool-objects',
+ source=bld.path.ant_glob('subtool/*.cpp', excl='subtool/main.cpp'),
+ use='core-objects')
+
+ bld(features='cxx cxxprogram',
+ target='../../bin/subtool',
+ source='subtool/main.cpp',
+ use='tool-subtool-objects')
+
+ bld(name='tool-objects',
+ use='tool-subtool-objects')