another fix and fixed spec

app/models/project.rb

@@ -447,6 +447,8 @@ class Project < ActiveRecord::Base
     import_url = Gitlab::UrlSanitizer.new(value)
     create_or_update_import_data(credentials: import_url.credentials)
     super(import_url.sanitized_url)
+  rescue Addressable::URI::InvalidURIError
+    errors.add(:import_url, 'must be a valid URL.')
   end
 
   def import_url

spec/models/project_spec.rb

@@ -65,7 +65,14 @@ describe Project, models: true do
     end
 
     it 'should not allow an invalid URI as import_url' do
-      project2 = build(:project)
+      project2 = build(:project, import_url: 'invalid://')
+
+      expect(project2).not_to be_valid
+    end
+
+    it 'should allow a valid URI as import_url' do
+      project2 = build(:project, import_url: 'ssh://test@gitlab.com/project.git')
+
       expect(project2).to be_valid
     end
   end