Use tmt for gating

.fmf/version

@@ -0,0 +1 @@
+1

gating.yaml

@@ -3,4 +3,4 @@ product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plan.fmf

@@ -0,0 +1,16 @@
+summary: Basic smoke test
+discover:
+  how: shell
+  tests:
+    - name: /smoke/import-python-module
+      test: |
+        /usr/libexec/platform-python -c 'import importlib as il; print(il.import_module("lxml"))'
+    - name: /smoke/etree-fromstring
+      test: |
+        /usr/libexec/platform-python tests/etree-fromstring.py
+prepare:
+  how: install
+  package:
+  - python3-lxml
+execute:
+  how: tmt

tests/etree-fromstring.py

@@ -0,0 +1,7 @@
+import lxml.etree as et
+s = '<foo><bar baz="xyzzy">a<![CDATA[b]]>c</bar></foo>'
+x = et.fromstring(s)
+t = x.find('bar').text
+print(t)
+if t != 'abc':
+    raise Exception()