tests: add test for adding invalid cores devices to caches

Signed-off-by: Damian Raczkowski <damian.raczkowski@intel.com>

test/functional/api/cas/cli_messages.py

@@ -20,6 +20,16 @@ start_cache_with_existing_metadata = [
     r" discard on-disk metadata and start fresh cache instance\."
 ]
 
+start_cache_on_already_used_dev = [
+    r"Error inserting cache \d+",
+    r"Cache device \'\/dev\/\S+\' is already used as cache\."
+]
+
+start_cache_with_existing_id = [
+    r"Error inserting cache \d+",
+    r"Cache ID already exists"
+]
+
 standby_init_with_existing_filesystem = [
     r"A filesystem exists on \S+. Specify the --force option if you wish to add the cache anyway.",
     r"Note: this may result in loss of data"

test/functional/tests/ci/test_basic.py

@@ -6,6 +6,14 @@
 import pytest
 
 from core.test_run import TestRun
+from api.cas import cli
+from api.cas.cli_messages import (
+    check_stderr_msg,
+    start_cache_on_already_used_dev,
+    start_cache_with_existing_id
+)
+from storage_devices.disk import DiskType, DiskTypeSet
+from test_utils.size import Size, Unit
 
 
 def test_cas_version():
@@ -32,3 +40,40 @@ def test_cas_version():
         if splitted_version[1] != file_cas_version:
             TestRun.LOGGER.error(f"""Version of {splitted_version[0]} from cmd doesn't match
              with file. Expected: {file_cas_version} Actual: {splitted_version[1]}""")
+
+@pytest.mark.CI
+@pytest.mark.require_disk("cache_1", DiskTypeSet([DiskType.nand, DiskType.optane]))
+def test_negative_start_cache():
+    """
+    title: Test start cache negative on cache device
+    description:
+      Check for negative cache start scenarios
+    pass criteria:
+      - Cache start succeeds
+      - Fails to start cache on the same device with another id
+      - Fails to start cache on another partition with the same id
+    """
+    with TestRun.step("Set up device"):
+        cache_dev = TestRun.disks["cache_1"]
+        cache_dev.create_partitions([Size(2000, Unit.MebiByte)] * 2)
+        cache_dev_1 = cache_dev.partitions[0]
+        cache_dev_2 = cache_dev.partitions[1]
+
+    with TestRun.step("Start cache on cache device"):
+        TestRun.executor.run_expect_success(
+            cli.start_cmd(cache_dev_1.path, cache_id="1", force=True)
+        )
+
+    with TestRun.step("Start cache on the same device but with another ID"):
+        output = TestRun.executor.run_expect_fail(
+            cli.start_cmd(cache_dev_1.path, cache_id="2", force=True)
+        )
+        if not check_stderr_msg(output, start_cache_on_already_used_dev):
+            TestRun.fail(f"Received unexpected error message: {output.stderr}")
+
+    with TestRun.step("Start cache with the same ID on another cache device"):
+        output = TestRun.executor.run_expect_fail(
+            cli.start_cmd(cache_dev_2.path, cache_id="1", force=True)
+        )
+        if not check_stderr_msg(output, start_cache_with_existing_id):
+            TestRun.fail(f"Received unexpected error message: {output.stderr}")