[PATCH v3] tests/acceptance: allow control over tags during check-acceptance

[Willian Rampazzo <willianr@redhat.com>]

Although it is possible to run a specific test using the avocado
command-line, a user may want to use a specific tag while running the
``make check-acceptance`` during the development or debugging.

This allows using the AVOCADO_TAGS environment variable where the user
takes total control of which tests should run based on the tags defined.

This also makes the check-acceptance command flexible to restrict tests
based on tags while running on CI.

e.g.:

AVOCADO_TAGS="foo bar baz" make check-acceptance

Signed-off-by: Willian Rampazzo <willianr@redhat.com>
Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
---
 docs/devel/testing.rst | 14 ++++++++++++++
 tests/Makefile.include | 12 +++++++++---
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 4e42392810..a81b44cf18 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -760,6 +760,20 @@ in the current directory, tagged as "quick", run:
 
   avocado run -t quick .
 
+It is also possible to run tests based on tags using the
+``make check-acceptance`` command and the ``AVOCADO_TAGS`` environment
+variable:
+
+.. code::
+
+   AVOCADO_TAGS=quick make check-acceptance
+
+Note that tags separated with commas have an AND behavior, while tags
+separated by spaces have an OR behavior. For more information on Avocado
+tags, see:
+
+ https://avocado-framework.readthedocs.io/en/latest/guides/user/chapters/tags.html
+
 The ``avocado_qemu.Test`` base test class
 -----------------------------------------
 
diff --git a/tests/Makefile.include b/tests/Makefile.include
index e4dcb17329..0ce331f9a9 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -92,7 +92,12 @@ TESTS_RESULTS_DIR=$(BUILD_DIR)/tests/results
 # Any number of command separated loggers are accepted.  For more
 # information please refer to "avocado --help".
 AVOCADO_SHOW=app
-AVOCADO_TAGS=$(patsubst %-softmmu,-t arch:%, $(filter %-softmmu,$(TARGETS)))
+ifndef AVOCADO_TAGS
+	AVOCADO_CMDLINE_TAGS=$(patsubst %-softmmu,-t arch:%, \
+						 $(filter %-softmmu,$(TARGETS)))
+else
+	AVOCADO_CMDLINE_TAGS=$(addprefix -t , $(AVOCADO_TAGS))
+endif
 
 $(TESTS_VENV_DIR): $(TESTS_VENV_REQ)
 	$(call quiet-command, \
@@ -128,8 +133,9 @@ check-acceptance: check-venv $(TESTS_RESULTS_DIR) get-vm-images
 	$(call quiet-command, \
             $(TESTS_VENV_DIR)/bin/python -m avocado \
             --show=$(AVOCADO_SHOW) run --job-results-dir=$(TESTS_RESULTS_DIR) \
-            --filter-by-tags-include-empty --filter-by-tags-include-empty-key \
-            $(AVOCADO_TAGS) \
+            $(if $(AVOCADO_TAGS),, --filter-by-tags-include-empty \
+			--filter-by-tags-include-empty-key) \
+            $(AVOCADO_CMDLINE_TAGS) \
             $(if $(GITLAB_CI),,--failfast) tests/acceptance, \
             "AVOCADO", "tests/acceptance")
 
-- 
2.31.1