Fix license exception compliance parsing bug

Reference: #1719
Signed-off-by: Ayan Sinha Mahapatra <ayansmahapatra@gmail.com>

Author: AyanSinhaMahapatra

scanpipe/models.py

@@ -2585,7 +2585,7 @@ def compute_compliance_alert(self):
             return ""
 
         licensing = get_licensing()
-        parsed_symbols = licensing.parse(license_expression, simple=True).symbols
+        parsed_symbols = licensing.license_symbols(license_expression, simple=True)
 
         alerts = [
             self.get_alert_for_symbol(policy_index, symbol) for symbol in parsed_symbols

scanpipe/tests/__init__.py

@@ -333,6 +333,14 @@ def make_mock_response(url, content=b"\x00", status_code=200, headers=None):
         "label": "Prohibited License",
         "compliance_alert": "error",
     },
+    {
+        "license_key": "gpl-2.0-plus",
+        "compliance_alert": "warning",
+    },
+    {
+        "license_key": "font-exception-gpl",
+        "compliance_alert": "warning",
+    },
     {
         "license_key": "OFL-1.1",
         "compliance_alert": "warning",
@@ -368,6 +376,14 @@ def make_mock_response(url, content=b"\x00", status_code=200, headers=None):
         "label": "Prohibited License",
         "compliance_alert": "error",
     },
+    "gpl-2.0-plus": {
+        "license_key": "gpl-2.0-plus",
+        "compliance_alert": "warning",
+    },
+    "font-exception-gpl": {
+        "license_key": "font-exception-gpl",
+        "compliance_alert": "warning",
+    },
     "OFL-1.1": {
         "license_key": "OFL-1.1",
         "compliance_alert": "warning",

scanpipe/tests/data/policies/policies.yml

@@ -12,6 +12,13 @@ license_policies:
     label: Prohibited License
     compliance_alert: error
 
+  - license_key: gpl-2.0-plus
+    compliance_alert: warning
+
+  # AboutCode license execption key
+  - license_key: font-exception-gpl
+    compliance_alert: warning
+
   # SPDX license keys
   - license_key: OFL-1.1
     compliance_alert: warning

scanpipe/tests/test_models.py

@@ -1601,6 +1601,14 @@ def test_scanpipe_codebase_resource_model_compliance_alert_update_fields(self):
         # Reset the index value
         scanpipe_app.license_policies_index = None
 
+    def test_scanpipe_can_compute_compliance_alert_for_license_exceptions(self):
+        scanpipe_app.license_policies_index = license_policies_index
+        resource = CodebaseResource.objects.create(project=self.project1, path="file")
+        license_expression = "gpl-2.0-plus WITH font-exception-gpl"
+        resource.update(detected_license_expression=license_expression)
+        resource.compute_compliance_alert()
+        self.assertEqual("warning", resource.compliance_alert)
+
     def test_scanpipe_scan_fields_model_mixin_methods(self):
         expected = [
             "detected_license_expression",