Update README.developer

README.developer

@@ -285,6 +285,7 @@ Optional, but highly recommended:
 * perl devel                        # h2xs
 * tcl devel                         # tcltk-depends
 * python devel                      # python-config
+* pytest
 * lua devel
 * libxml2 devel                     # xml2-config --version
 * libgd2 devel                      # gdlib-config --version (rigmatrix)
@@ -440,6 +441,46 @@ as above and once the run is complete:
 
 The resulting generated document in the 'latex' directory is 'refman.pdf'.
 
+1.3.2 Automated tests
+
+Automated tests are executed running:
+
+    make check
+
+The makefiles run the simple tests with automake.
+The make variable TESTS contains the tests to be run and the variables
+check_PROGRAMS and check_SCRIPTS contain the executables needed to run the
+tests that aren't built by make all.
+For more information see the automake manual at
+https://www.gnu.org/software/automake/manual/html_node/Scripts_002dbased-Testsuites.html
+
+1.3.2.1 C tests
+
+Tests written in C are available in the tests/ directory. They are run with:
+
+    make -C tests/ check
+
+1.3.2.2 Python tests with pytest
+
+Tests written in Python are available in the bindings/python directory if
+Hamlib is configured to build the Python bindings and if pytest is installed,
+eg.:
+
+    ./configure --with-python-binding --enable-pytest
+
+They are run with:
+
+    make -C bindings/ check
+
+The Python scripts consist in handwritten tests, meant to test realistic use
+cases, and autogenerated tests, meant to detect unwanted changes in the
+bindings. When a public symbol is added to the bindings or removed, the
+autogenerated tests must be updated:
+
+    make -C bindings/ generate-pytests
+
+and the handwritten tests should be updated to reflect the change.
+
 
 1.4. Feedback