Fix and restructure functional tests

tests/functional/conftest.py

@@ -1,5 +1,7 @@
 import logging
+import os
 import platform
+from pathlib import Path
 
 import pytest
 from utils import RESOURCES_DIR, Resource
@@ -100,31 +102,31 @@ def resources() -> list[Resource]:
         Resource(
             resource_name=TPR_RESOURCES.get(HWTool.STORCLI),
             file_name="storcli.deb",
-            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.STORCLI)[0].replace(
+            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.STORCLI).replace(
                 "collector.", ""
             ),
             bin_name=HWTool.STORCLI.value,
         ),
         Resource(
             resource_name=TPR_RESOURCES.get(HWTool.PERCCLI),
             file_name="perccli.deb",
-            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.PERCCLI)[0].replace(
+            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.PERCCLI).replace(
                 "collector.", ""
             ),
             bin_name=HWTool.PERCCLI.value,
         ),
         Resource(
             resource_name=TPR_RESOURCES.get(HWTool.SAS2IRCU),
             file_name="sas2ircu",
-            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.SAS2IRCU)[0].replace(
+            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.SAS2IRCU).replace(
                 "collector.", ""
             ),
             bin_name=HWTool.SAS2IRCU.value,
         ),
         Resource(
             resource_name=TPR_RESOURCES.get(HWTool.SAS3IRCU),
             file_name="sas3ircu",
-            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.SAS3IRCU)[0].replace(
+            collector_name=HARDWARE_EXPORTER_COLLECTOR_MAPPING.get(HWTool.SAS3IRCU).replace(
                 "collector.", ""
             ),
             bin_name=HWTool.SAS3IRCU.value,
@@ -146,3 +148,15 @@ def required_resources(resources: list[Resource], provided_collectors: set) -> l
             required_resources.append(resource)
 
     return required_resources
+
+
+@pytest.fixture()
+def charm_path(base: str, architecture: str) -> Path:
+    """Fixture to determine the charm path based on the base."""
+    glob_path = f"hardware-observer_*{base.replace('@', '-')}-{architecture}*.charm"
+    paths = list(Path(".").glob(glob_path))
+
+    if not paths:
+        raise FileNotFoundError(f"The path for the charm for {base}-{architecture} is not found.")
+
+    return os.getcwd() / paths[0]