Add a new test to check that extras pkgs can be installed

This test gets a list of extra packages from
https://reports.xcp-ng.org/<xcp-ng-version>/extra_installable.txt
and checks that:
- the package is available and dependencies resolved using
  yumdownloader
- all packages can be installed. Before installing packages it
  saves the yum state and restores it after the installation.

As tests are taking some time we added them in their onw job.

Signed-off-by: Guillaume <[email protected]>

jobs.py

@@ -45,6 +45,16 @@
         "paths": ["tests/misc"],
         "markers": "multi_vms and not flaky and not reboot",
     },
+    "packages": {
+        "description": "tests that packages can be install correctly",
+        "requirements": [
+            "Any pool.",
+        ],
+        "nb_pools": 1,
+        "params": {},
+        "paths": ["tests/packages"],
+        "markers": "",
+    },
     "quicktest": {
         "description": "XAPI's quicktest, not so quick by the way",
         "requirements": [

tests/packages/extra/conftest.py

@@ -0,0 +1,12 @@
+import logging
+import pytest
+import urllib.request
+
+@pytest.fixture(scope="session")
+def extra_pkgs(host):
+    version = host.xcp_version
+    url = f"https://reports.xcp-ng.org/{version}/extra_installable.txt"
+
+    logging.info(f"Getting extra packages from {url}")
+    response = urllib.request.urlopen(url)
+    return response.read().decode('utf-8').splitlines()

tests/packages/extra/test_extra_group_pkgs.py

@@ -0,0 +1,11 @@
+# Explicitly import package-scoped fixtures (see explanation in pkgfixtures.py)
+from pkgfixtures import host_with_saved_yum_state
+
+def test_extra_group_packages_url_resolved(host, extra_pkgs):
+    for p in extra_pkgs:
+        host.ssh(['yumdownloader', '--resolve', '--urls', p])
+
+def test_extra_group_packages_can_be_installed(host_with_saved_yum_state, extra_pkgs):
+    # Just try to install all packages together. Installing them one by one
+    # takes too much time due to the generation of the initrd.
+    host_with_saved_yum_state.yum_install(extra_pkgs)