Testing doc

docs/test.md

+
+#Testing environment
+
+You can check the environment with tests.
+
+    $ perl Makefile.PL
+    $ sudo make test 
+    
+At the end, in "Test Summary Report" you can check the result.
+
+If something goes wrong you see: 
+    Result: FAIL    
+
+
+#Library TEST::SQL::DATA
+For install TEST::SQL::DATA module follow the instructions below:
+
+    https://github.com/frankiejol/Test-SQL-Data/blob/master/INSTALL.md
+
+