[IMP] tests: Add the possibility to tag tests

Purpose: When running tests, all the tests for the installed/updated
files are done. This commit adds a 'tagged' decorator that can be used to
tag tests. Combined with a new 'test-tags' CLI option, it adds the ability
to filter which tests are executed. For example, @tagged('slow') will
add a tag 'slow' to the test. The CLI option 'test-tags="slow"' will
only run tests tagged 'slow'.

One can use prefixes to select cases with tags.
'+' or no prefix means that the tests tagged with this tag are selected
for execution. '-' prefix will exclude the tests tagged with this tag.
Exclusion takes precedence over inclusion.

Also, by default, all Odoo tests cases are tagged 'standard' and with
the technical name of the module.
This means that when selecting tests with the 'test-tags'
parameter, if '-standard' is not specified, all tests tags are
going to be executed.
When tagging tests, one can remove such automatic tag by prefixing the
tag name with '-'. E.g. @tagged('-standard') will remove the standard
tag from the test.

Another example, if one wants to test the 'sale' module alone,
even without adding any 'tagged' decorator thos tests can be selected
like that: --test-tags="sale"

Tests are selected or deselected using a TagsSelector. When instanciated,
 a string is passed with comma separated tests selectors like
'+slow,-standard'. When the 'check' method is called  with a test as argument,
it returns True or False if the test has to be executed or not.

1 files changed, 5 insertions, 1 deletions

diff --git a/odoo/tools/config.py b/odoo/tools/config.py
index 3191f3c61ca..86cfb8adbfb 100644
--- a/odoo/tools/config.py
+++ b/odoo/tools/config.py
@@ -161,6 +161,10 @@ class configmanager(object):
                          my_default=False, help="Enable unit tests.")
         group.add_option("--test-commit", action="store_true", dest="test_commit",
                          my_default=False, help="Commit database changes performed by XML tests.")
+        group.add_option("--test-tags", dest="test_tags",
+                         default=('+standard'),
+                         help="Comma separated list of tags to filter which tests to excute")
+
         parser.add_option_group(group)
 
         # Logging Group
@@ -425,7 +429,7 @@ class configmanager(object):
             'dev_mode', 'shell_interface', 'smtp_ssl', 'load_language',
             'stop_after_init', 'logrotate', 'without_demo', 'http_enable', 'syslog',
             'list_db', 'proxy_mode',
-            'test_file', 'test_enable', 'test_commit', 'test_report_directory',
+            'test_file', 'test_enable', 'test_commit', 'test_report_directory', 'test_tags',
             'osv_memory_count_limit', 'osv_memory_age_limit', 'max_cron_threads', 'unaccent',
             'data_dir',
             'server_wide_modules',