Add tests for data migration

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

vulnerabilities/migrations/0014_remove_duplicate_severities.py

@@ -61,4 +61,5 @@ def remove_duplicate_rows(apps, schema_editor):
                 .delete()
             )
 
-    operations = [migrations.RunPython(remove_duplicate_rows)]
+    # sepecifying migrations.RunPython.noop as reverse_code
+    operations = [migrations.RunPython(remove_duplicate_rows, migrations.RunPython.noop)]

vulnerabilities/tests/test_data_migrations.py

@@ -0,0 +1,130 @@
+# Copyright (c) nexB Inc. and others. All rights reserved.
+# http://nexb.com and https://github.com/nexB/vulnerablecode/
+# The VulnerableCode software is licensed under the Apache License version 2.0.
+# Data generated with VulnerableCode require an acknowledgment.
+#
+# You may not use this software except in compliance with the License.
+# You may obtain a copy of the License at: http://apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software distributed
+# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+# CONDITIONS OF ANY KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations under the License.
+#
+# When you publish or redistribute any data created with VulnerableCode or any VulnerableCode
+# derivative work, you must accompany this data with the following acknowledgment:
+#
+#  Generated with VulnerableCode and provided on an "AS IS" BASIS, WITHOUT WARRANTIES
+#  OR CONDITIONS OF ANY KIND, either express or implied. No content created from
+#  VulnerableCode should be considered or used as legal advice. Consult an Attorney
+#  for any legal advice.
+#  VulnerableCode is a free software tool from nexB Inc. and others.
+#  Visit https://github.com/nexB/vulnerablecode/ for support and download.
+
+from django.apps import apps
+from django.db import connection
+from django.db.migrations.executor import MigrationExecutor
+from django.test import TestCase
+
+from vulnerabilities import severity_systems
+from vulnerabilities.models import VulnerabilityReference
+from vulnerabilities.models import VulnerabilitySeverity
+
+
+class TestMigrations(TestCase):
+    @property
+    def app(self):
+        return apps.get_containing_app_config(type(self).__module__).name
+
+    migrate_from = None
+    migrate_to = None
+
+    def setUp(self):
+        assert (
+            self.migrate_from and self.migrate_to
+        ), "TestCase '{}' must define migrate_from and migrate_to properties".format(
+            type(self).__name__
+        )
+        self.migrate_from = [(self.app, self.migrate_from)]
+        self.migrate_to = [(self.app, self.migrate_to)]
+        executor = MigrationExecutor(connection)
+        old_apps = executor.loader.project_state(self.migrate_from).apps
+
+        # # Reverse to the original migration
+        executor.migrate(self.migrate_from)
+
+        self.setUpBeforeMigration(old_apps)
+
+        # Run the migration to test
+        executor = MigrationExecutor(connection)
+        executor.loader.build_graph()  # reload.
+        executor.migrate(self.migrate_to)
+
+        self.apps = executor.loader.project_state(self.migrate_to).apps
+
+    def setUpBeforeMigration(self, apps):
+        pass
+
+
+class DuplicateSeverityTestCase(TestMigrations):
+
+    migrate_from = "0013_auto_20220503_0941"
+    migrate_to = "0014_remove_duplicate_severities"
+
+    def setUpBeforeMigration(self, apps):
+        # using get_model to avoid circular import
+        VulnerabilityReference = apps.get_model("vulnerabilities", "VulnerabilityReference")
+        Severities = apps.get_model("vulnerabilities", "VulnerabilitySeverity")
+        Vulnerability = apps.get_model("vulnerabilities", "Vulnerability")
+        
+        reference = VulnerabilityReference.objects.create(
+            reference_id="CVE-TEST", url="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-TEST"
+        )
+        self.reference = reference
+        vulnerability1 = Vulnerability(vulnerability_id=1, summary="test-1")
+        vulnerability1.save()
+        vulnerability2 = Vulnerability(vulnerability_id=2, summary="test-2")
+        vulnerability2.save()
+        vulnerability3 = Vulnerability(vulnerability_id=3, summary="test-3")
+        vulnerability3.save()
+        Severities.objects.update_or_create(
+            vulnerability=vulnerability1,
+            scoring_system=severity_systems.REDHAT_AGGREGATE.identifier,
+            reference=reference,
+            defaults={"value": str("TEST")},
+        )
+        Severities.objects.update_or_create(
+            vulnerability=vulnerability2,
+            scoring_system=severity_systems.REDHAT_AGGREGATE.identifier,
+            reference=reference,
+            defaults={"value": str("TEST")},
+        )
+        Severities.objects.update_or_create(
+            vulnerability=vulnerability3,
+            scoring_system=severity_systems.REDHAT_AGGREGATE.identifier,
+            reference=reference,
+            defaults={"value": str("TEST")},
+        )
+
+    def test_remove_duplicate_rows(self):
+        VulnerabilitySeverity = self.apps.get_model("vulnerabilities", "VulnerabilitySeverity")
+        assert len(VulnerabilitySeverity.objects.filter(reference=self.reference.id)) == 1
+
+
+class DropVulnerabilityFromSeverityTestCase(TestMigrations):
+
+    migrate_from = "0014_remove_duplicate_severities"
+    migrate_to = "0015_alter_vulnerabilityseverity_unique_together_and_more"
+
+    def test_dropping_vulnerability_from_severity(self):
+        # using get_model to avoid circular import
+        VulnerabilityReference = self.apps.get_model("vulnerabilities", "VulnerabilityReference")
+        VulnerabilitySeverity = self.apps.get_model("vulnerabilities", "VulnerabilitySeverity")
+
+        reference = VulnerabilityReference.objects.create(
+            reference_id="CVE-TEST", url="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-TEST"
+        )
+        VulnerabilitySeverity.objects.update_or_create(
+            scoring_system=severity_systems.REDHAT_AGGREGATE.identifier,
+            reference=reference,
+            defaults={"value": str("TEST")},
+        )

vulnerabilities/tests/test_fix_api.py

@@ -21,6 +21,7 @@
 #  Visit https://github.com/nexB/vulnerablecode/ for support and download.
 
 from django.test import TestCase
+from django.utils.http import int_to_base36
 from rest_framework import status
 
 from vulnerabilities.models import Package
@@ -31,7 +32,7 @@
 
 class APITestCaseVulnerability(TestCase):
     def setUp(self):
-        for i in range(0, 10):
+        for i in range(0, 200):
             Vulnerability.objects.create(
                 summary=str(i),
             )
@@ -43,15 +44,15 @@ def test_api_status(self):
 
     def test_api_response(self):
         response = self.client.get("/api/vulnerabilities/", format="json").data
-        self.assertEqual(response["count"], 11)
+        self.assertEqual(response["count"], 201)
 
     def test_api_with_single_vulnerability(self):
         response = self.client.get(
             f"/api/vulnerabilities/{self.vulnerability.id}", format="json"
         ).data
         assert response == {
             "url": f"http://testserver/api/vulnerabilities/{self.vulnerability.id}",
-            "vulnerability_id": "VULCOID-Y",
+            "vulnerability_id": f"VULCOID-{int_to_base36(self.vulnerability.id).upper()}",
             "summary": "test",
             "aliases": [],
             "fixed_packages": [],

vulnerabilities/tests/test_redhat_importer.py

@@ -66,7 +66,6 @@ def test_redhat_importer(bugzilla, rhsa, fetcher):
         json.load(open(rhsa_1437)),
         json.load(open(rhsa_1439)),
     ]
-    print(fetcher.return_value)
     expected_file = os.path.join(TEST_DATA, f"redhat-expected.json")
     imported_data = list(redhat_importer.advisory_data())
     result = [data.to_dict() for data in imported_data]

vulnerabilities/tests/test_helpers.py vulnerabilities/tests/test_utils.pyvulnerabilities/tests/test_helpers.py renamed to vulnerabilities/tests/test_utils.py

@@ -295,7 +295,7 @@ def get_affected_packages_by_patched_package(
 
 
 # This code has been vendored from scancode.
-# https://github.com/nexB/scancode-toolkit/blob/develop/src/packagedcode/utils.py#L111
+# https://github.com/nexB/scancode-toolkit/blob/aba31126dcb3ab57f2b885090f7145f69b67351a/src/packagedcode/utils.py#L111
 def build_description(summary, description):
     """
     Return a description string from a summary and description