Add test test_cli_help_spelling

Signed-off-by: Adam Seyda <adam.seyda@intel.com>
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

test/functional/resources/cas_ex.en.pws

@@ -0,0 +1,60 @@
+personal_ws-1.1 en 1
+ALRU
+CAS
+CSV
+CentOS
+DSS
+HDD
+KiB
+LANG
+LBA
+MiB
+NHIT
+NUM
+NVMe
+OCF
+RHEL
+SLES
+SSD
+SSDP
+SUSE
+TERM
+TTY
+UTF
+Ubuntu
+acp
+alru
+async
+blk
+cas
+casadm
+casctl
+conf
+config
+csv
+dev
+failover
+init
+io
+kibibytes
+lru
+metadata
+namespace
+namespaces
+nhit
+nop
+nvme
+opencas
+param
+req
+reseller
+resizing
+runtime
+sdb
+sdx
+utf
+wa
+wb
+wt
+wo
+wwn

test/functional/tests/cli/test_cli_help_spelling.py

@@ -0,0 +1,50 @@
+#
+# Copyright(c) 2022 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import os
+
+from api.cas.cli import casadm_bin
+from core.test_run import TestRun
+
+
+def test_cli_help_spelling():
+    """
+    title: Spelling test for 'help' command
+    description: Validates spelling of 'help' in CLI
+    pass criteria:
+    - no spelling mistakes are found
+    """
+
+    cas_dictionary = os.path.join(TestRun.usr.repo_dir, "test", "functional", "resources")
+
+    with TestRun.step("Run aspell"):
+        TestRun.executor.rsync_to(
+            f"{cas_dictionary}/",
+            f"{TestRun.usr.working_dir}/",
+            delete=True)
+        cas_dictionary = os.path.join(TestRun.usr.working_dir, "cas_ex.en.pws")
+
+        output = TestRun.executor.run_expect_success(
+            f"{casadm_bin} -H 2>&1 | aspell list -c --lang=en_US "
+            f"--add-extra-dicts={cas_dictionary}")
+
+        if output.stdout:
+            TestRun.LOGGER.error("Misspelled words found:\n")
+            TestRun.LOGGER.error(output.stdout)
+
+        output = TestRun.executor.run_expect_success(
+            f"{casadm_bin} -H"
+            " | awk '/Available commands:/{ cmd=1;next } /For detailed help/ { cmd=0 } "
+            "cmd { print $0 }' | grep -o '\\-\\-\\S*'")
+        commands = output.stdout.splitlines()
+
+        for command in commands:
+            output = TestRun.executor.run_expect_success(
+                f"{casadm_bin} {command} -H | aspell list --lang=en_US "
+                f"--add-extra-dicts={cas_dictionary}")
+
+            if output.stdout:
+                TestRun.LOGGER.error(f"Misspelled word found in command :{command}\n")
+                TestRun.LOGGER.error(output.stdout)