Add int test that sets non english LANG

plans/tier1.fmf

@@ -133,3 +133,17 @@ discover+:
   - name: reboot machine
     how: ansible
     playbook: tests/ansible_collections/reboot.yml
+
+/language_test:
+  discover+:
+    test: checks-after-conversion
+  prepare+:
+  - name: set non english locale
+    how: shell
+    script: pytest -svv tests/integration/tier1/set-locale/use_non_english_language.py
+  - name: main conversion preparation
+    how: shell
+    script: pytest -svv tests/integration/tier1/method/activation_key.py
+  - name: reboot machine
+    how: ansible
+    playbook: tests/ansible_collections/reboot.yml

tests/integration/tier1/set-locale/use_non_english_language.py

@@ -0,0 +1,17 @@
+import platform
+
+
+def test_use_non_english_language(shell):
+    """
+    We need to test the ability of convert2rhel to convert the system when non english
+    language is set (using non ascii language).
+    Ref bug: https://bugzilla.redhat.com/show_bug.cgi?id=2022854
+    """
+    # install Chinese language pack for CentOS-8 and Oracle Linux 8
+    os = platform.platform()
+    if os.find("centos-8") != -1 or os.find("oracle-8") != -1:
+        assert shell("dnf install glibc-langpack-zh -y").returncode == 0
+
+    # set LANG to Chinese
+    assert shell("localectl list-locales | grep zh_CN.utf8").returncode == 0
+    assert shell("localectl set-locale LANG=zh_CN.utf8").returncode == 0