selftests: tc-testing: add "depends_on" property to skip tests

currently, users can skip individual test cases by means of writing

  "skip": "yes"

in the scenario file. Extend this functionality, introducing 'dependsOn':
it's optional property like "skip", but the value contains a command (for
example, a probe on iproute2 to check if it supports a specific feature).
If such property is present, tdc executes that command and skips the test
when the return value is non-zero.

Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/tc-testing/creating-testcases/AddingTestCases.txt b/tools/testing/selftests/tc-testing/creating-testcases/AddingTestCases.txt
index a28571aff0e1ded2fd7d373985b7f25699b71648..ff956d8c99c54a358afddd542c0197ceee4502a2 100644 (file)
--- a/tools/testing/selftests/tc-testing/creating-testcases/AddingTestCases.txt
+++ b/tools/testing/selftests/tc-testing/creating-testcases/AddingTestCases.txt
@@ -38,6 +38,8 @@ skip:         A completely optional key, if the corresponding value is "yes"
               this test case will still appear in the results output but
               marked as skipped. This key can be placed anywhere inside the
               test case at the top level.
+dependsOn:    Same as 'skip', but the value is executed as a command. The test
+              is skipped when the command returns non-zero.
 category:     A list of single-word descriptions covering what the command
               under test is testing. Example: filter, actions, u32, gact, etc.
 setup:        The list of commands required to ensure the command under test

diff --git a/tools/testing/selftests/tc-testing/tdc.py b/tools/testing/selftests/tc-testing/tdc.py
index 7bd94f8e490a041d5e69b90c3f752b7a7222fdc5..b98256f38447d33d5e701754d03fef4c95ae1e4f 100755 (executable)
--- a/tools/testing/selftests/tc-testing/tdc.py
+++ b/tools/testing/selftests/tc-testing/tdc.py
@@ -369,6 +369,19 @@ def run_one_test(pm, args, index, tidx):
             pm.call_post_execute()
             return res
 
+    if 'dependsOn' in tidx:
+        if (args.verbose > 0):
+            print('probe command for test skip')
+        (p, procout) = exec_cmd(args, pm, 'execute', tidx['dependsOn'])
+        if p:
+            if (p.returncode != 0):
+                res = TestResult(tidx['id'], tidx['name'])
+                res.set_result(ResultState.skip)
+                res.set_errormsg('probe command: test skipped.')
+                pm.call_pre_case(tidx, test_skip=True)
+                pm.call_post_execute()
+                return res
+
     # populate NAMES with TESTID for this test
     NAMES['TESTID'] = tidx['id']