Return None when urls cannot be created for a maven package #505

    * Update tests

Signed-off-by: Jono Yang <[email protected]>

minecode/visitors/maven.py

@@ -125,6 +125,8 @@ def get_pom_text(namespace, name, version, qualifiers={}, base_url=MAVEN_BASE_UR
         qualifiers=qualifiers,
         base_url=base_url,
     )
+    if not urls:
+        return
     # Get and parse POM info
     pom_url = urls['api_data_url']
     # TODO: manage different types of errors (404, etc.)

packagedb/tests/test_api.py

@@ -1132,6 +1132,23 @@ def test_package_api_index_packages_priority(self):
             priority_resource_uri = PriorityResourceURI.objects.get(package_url=purl)
             self.assertEqual(0, priority_resource_uri.priority)
 
+    def test_collect_errors(self):
+        invalid_purl = 'pkg:asdf1'
+        response = self.client.get(f'/api/collect/?purl={invalid_purl}')
+        self.assertEqual(status.HTTP_400_BAD_REQUEST, response.status_code)
+        expected_status = {'purl': ["purl validation error: purl is missing the required type component: 'pkg:asdf1'."]}
+        self.assertEqual(expected_status, response.data['errors'])
+
+        purl_str = 'pkg:maven/[email protected]'
+        response = self.client.get(f'/api/collect/?purl={purl_str}')
+        self.assertEqual(status.HTTP_400_BAD_REQUEST, response.status_code)
+        expected_status = (
+            'error(s) occurred when fetching metadata for pkg:maven/[email protected]: '
+            'Package does not exist on maven: pkg:maven/[email protected]\n'
+            'Package does not exist on maven: pkg:maven/[email protected]?classifier=sources\n'
+        )
+        self.assertEqual(expected_status, response.data['status'])
+
 
 class ResourceApiTestCase(TestCase):