Adding a new test file for mcg cli commands validation with bucket list command verification

tests/functional/object/mcg/test_mcg_cli.py

@@ -0,0 +1,69 @@
+import pytest
+
+import logging
+
+from ocs_ci.framework.pytest_customization.marks import (
+    tier2,
+    red_squad,
+    mcg,
+)
+from ocs_ci.framework.testlib import MCGTest
+
+logger = logging.getLogger(__name__)
+
+
+@mcg
+@red_squad
+@tier2
+class TestMcgCli(MCGTest):
+    """
+    Tests for mcg cli commands validation
+    """
+
+    @pytest.mark.parametrize(
+        argnames="count",
+        argvalues=[
+            pytest.param(3),
+        ],
+    )
+    def test_bucket_list_command(
+        self,
+        count,
+        mcg_obj,
+        bucket_factory,
+    ):
+        """
+        Test proper output of MCG CLI bucket list command.
+        The method does the following:
+         1) runs this command to count the number of existing buckets
+         2) creates number of buckets
+         3) runs bucket list command again
+         4) verifies that the number of current buckets equals the number of previously existing and the added ones
+
+        Args:
+           count (int): number of buckets to create
+
+        """
+        bucket_lst_res = mcg_obj.exec_mcg_cmd("bucket list").stdout.split("\n")
+        bucket_names = [name.strip() for name in bucket_lst_res if name][
+            1:
+        ]  # get rid of empty strings and the title
+        existing_buckets_num = len(bucket_names)
+        logger.info(f"{existing_buckets_num} bucket(s) exist")
+
+        logger.info(f"Creating {count} buckets")
+        buckets = bucket_factory(count)
+        created_bucket_names = (b.name for b in buckets)
+        logger.info("Buckets " + ", ".join(created_bucket_names) + " created")
+
+        bucket_lst_res = mcg_obj.exec_mcg_cmd("bucket list").stdout.split("\n")
+        bucket_names = [name.strip() for name in bucket_lst_res if name][
+            1:
+        ]  # get rid of empty strings and the title
+        current_buckets_num = len(bucket_names)
+        assert current_buckets_num == existing_buckets_num + count, (
+            f"'bucket list' command shows"
+            f" {current_buckets_num} buckets"
+            f" expected {existing_buckets_num + count}."
+        )
+        logger.info("'bucket list' command finished successfully")