tests: allow running integration tests with different configurations

test/scenarios/lib.py

@@ -0,0 +1,34 @@
+def succeed(*cmds):
+    """Returns the concatenated output of all cmds"""
+    return machine.succeed(*cmds)
+
+
+def assert_matches(cmd, regexp):
+    out = succeed(cmd)
+    if not re.search(regexp, out):
+        raise Exception(f"Pattern '{regexp}' not found in '{out}'")
+
+
+def assert_matches_exactly(cmd, regexp):
+    out = succeed(cmd)
+    if not re.fullmatch(regexp, out):
+        raise Exception(f"Pattern '{regexp}' doesn't match '{out}'")
+
+
+def log_has_string(unit, str):
+    return f"journalctl -b --output=cat -u {unit} --grep='{str}'"
+
+
+def assert_no_failure(unit):
+    """Unit should not have failed since the system is running"""
+    machine.fail(log_has_string(unit, "Failed with result"))
+
+
+def assert_running(unit):
+    machine.wait_for_unit(unit)
+    assert_no_failure(unit)
+
+
+# Don't execute the following test suite when this script is running in interactive mode
+if "is_interactive" in vars():
+    raise Exception()