Spam check only when spammable attributes have changed

3 files changed, 128 insertions, 23 deletions

diff --git a/spec/models/issue_spec.rb b/spec/models/issue_spec.rb
index 73977d031f9..b8584301baa 100644
--- a/spec/models/issue_spec.rb
+++ b/spec/models/issue_spec.rb
@@ -670,4 +670,41 @@ describe Issue, models: true do
       expect(attrs_hash).to include('time_estimate')
     end
   end
+
+  describe '#check_for_spam' do
+    let(:project) { create :project, visibility_level: visibility_level }
+    let(:issue) { create :issue, project: project }
+
+    subject do
+      issue.assign_attributes(description: description)
+      issue.check_for_spam?
+    end
+
+    context 'when project is public and spammable attributes changed' do
+      let(:visibility_level) { Gitlab::VisibilityLevel::PUBLIC }
+      let(:description) { 'woo' }
+
+      it 'returns true' do
+        is_expected.to be_truthy
+      end
+    end
+
+    context 'when project is private' do
+      let(:visibility_level) { Gitlab::VisibilityLevel::PRIVATE }
+      let(:description) { issue.description }
+
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+    end
+
+    context 'when spammable attributes have not changed' do
+      let(:visibility_level) { Gitlab::VisibilityLevel::PUBLIC }
+      let(:description) { issue.description }
+
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+    end
+  end
 end
diff --git a/spec/models/snippet_spec.rb b/spec/models/snippet_spec.rb
index 219ab1989ea..8095d01b69e 100644
--- a/spec/models/snippet_spec.rb
+++ b/spec/models/snippet_spec.rb
@@ -198,4 +198,47 @@ describe Snippet, models: true do
       expect(snippet.participants).to include(note1.author, note2.author)
     end
   end
+
+  describe '#check_for_spam' do
+    let(:snippet) { create :snippet, visibility_level: visibility_level }
+
+    subject do
+      snippet.assign_attributes(title: title)
+      snippet.check_for_spam?
+    end
+
+    context 'when public and spammable attributes changed' do
+      let(:visibility_level) { Snippet::PUBLIC }
+      let(:title) { 'woo' }
+
+      it 'returns true' do
+        is_expected.to be_truthy
+      end
+    end
+
+    context 'when private' do
+      let(:visibility_level) { Snippet::PRIVATE }
+      let(:title) { snippet.title }
+
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+
+      it 'returns true when switching to public' do
+        snippet.save!
+        snippet.visibility_level = Snippet::PUBLIC
+
+        expect(snippet.check_for_spam?).to be_truthy
+      end
+    end
+
+    context 'when spammable attributes have not changed' do
+      let(:visibility_level) { Snippet::PUBLIC }
+      let(:title) { snippet.title }
+
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+    end
+  end
 end
diff --git a/spec/services/spam_service_spec.rb b/spec/services/spam_service_spec.rb
index 4ce3b95aa87..e09c05ccf32 100644
--- a/spec/services/spam_service_spec.rb
+++ b/spec/services/spam_service_spec.rb
@@ -19,42 +19,67 @@ describe SpamService, services: true do
       let(:issue)   { create(:issue, project: project) }
       let(:request) { double(:request, env: {}) }
 
-      context 'when indicated as spam by akismet' do
-        before { allow(AkismetService).to receive(:new).and_return(double(is_spam?: true)) }
+      context 'when spammable attributes have not changed' do
+        before do
+          issue.closed_at = Time.zone.now
 
-        it 'doesnt check as spam when request is missing' do
-          check_spam(issue, nil, false)
-
-          expect(issue.spam).to be_falsey
+          allow(AkismetService).to receive(:new).and_return(double(is_spam?: true))
         end
 
-        it 'checks as spam' do
-          check_spam(issue, request, false)
-
-          expect(issue.spam).to be_truthy
+        it 'returns false' do
+          expect(check_spam(issue, request, false)).to be_falsey
         end
 
-        it 'creates a spam log' do
+        it 'does not create a spam log' do
           expect { check_spam(issue, request, false) }
-            .to change { SpamLog.count }.from(0).to(1)
+            .not_to change { SpamLog.count }
         end
+      end
 
-        it 'doesnt yield block' do
-          expect(check_spam(issue, request, false))
-            .to eql(SpamLog.last)
+      context 'when spammable attributes have changed' do
+        before do
+          issue.description = 'SPAM!'
         end
-      end
 
-      context 'when not indicated as spam by akismet' do
-        before { allow(AkismetService).to receive(:new).and_return(double(is_spam?: false)) }
+        context 'when indicated as spam by akismet' do
+          before do
+            allow(AkismetService).to receive(:new).and_return(double(is_spam?: true))
+          end
 
-        it 'returns false' do
-          expect(check_spam(issue, request, false)).to be_falsey
+          it 'doesnt check as spam when request is missing' do
+            check_spam(issue, nil, false)
+
+            expect(issue.spam).to be_falsey
+          end
+
+          it 'checks as spam' do
+            check_spam(issue, request, false)
+
+            expect(issue.spam).to be_truthy
+          end
+
+          it 'creates a spam log' do
+            expect { check_spam(issue, request, false) }
+              .to change { SpamLog.count }.from(0).to(1)
+          end
+
+          it 'doesnt yield block' do
+            expect(check_spam(issue, request, false))
+              .to eql(SpamLog.last)
+          end
         end
 
-        it 'does not create a spam log' do
-          expect { check_spam(issue, request, false) }
-            .not_to change { SpamLog.count }
+        context 'when not indicated as spam by akismet' do
+          before { allow(AkismetService).to receive(:new).and_return(double(is_spam?: false)) }
+
+          it 'returns false' do
+            expect(check_spam(issue, request, false)).to be_falsey
+          end
+
+          it 'does not create a spam log' do
+            expect { check_spam(issue, request, false) }
+              .not_to change { SpamLog.count }
+          end
         end
       end
     end