adds InappropiateFlag model with relations and specs

spec/models/inappropiate_flag_spec.rb

@@ -0,0 +1,64 @@
+require 'rails_helper'
+
+describe InappropiateFlag do
+
+  let(:user) { create(:user) }
+  let(:comment) { create(:comment) }
+
+  describe '.flag!' do
+
+    it 'creates a flag when there is none' do
+      expect { described_class.flag!(user, comment) }.to change{ InappropiateFlag.count }.by(1)
+      expect(InappropiateFlag.last.user).to eq(user)
+      expect(InappropiateFlag.last.flaggable).to eq(comment)
+    end
+
+    it 'raises an error if the flag has already been created' do
+      described_class.flag!(user, comment)
+      expect { described_class.flag!(user, comment) }.to raise_error(InappropiateFlag::AlreadyFlaggedError)
+    end
+
+    it 'increases the flag count' do
+      expect { described_class.flag!(user, comment) }.to change{ comment.reload.inappropiate_flags_count }.by(1)
+    end
+
+    it 'updates the flagged_as date' do
+      expect { described_class.flag!(user, comment) }.to change{ comment.reload.flagged_as_inappropiate_at }
+    end
+  end
+
+  describe '.unflag!' do
+    it 'raises an error if the flag does not exist' do
+      expect { described_class.unflag!(user, comment) }.to raise_error(InappropiateFlag::NotFlaggedError)
+    end
+
+    describe 'when the flag already exists' do
+      before(:each) { described_class.flag!(user, comment) }
+
+      it 'removes an existing flag' do
+        expect { described_class.unflag!(user, comment) }.to change{ InappropiateFlag.count }.by(-1)
+      end
+
+      it 'decreases the flag count' do
+        expect { described_class.unflag!(user, comment) }.to change{ comment.reload.inappropiate_flags_count }.by(-1)
+      end
+
+      it 'does not update the flagged_as date' do
+        expect { described_class.unflag!(user, comment) }.to_not change{ comment.flagged_as_inappropiate_at }
+      end
+    end
+
+  end
+
+  describe '.flagged?' do
+    it 'returns false when the user has not flagged the comment' do
+      expect(described_class.flagged?(user, comment)).to_not be
+    end
+
+    it 'returns true when the user has flagged the comment' do
+      described_class.flag!(user, comment)
+      expect(described_class.flagged?(user, comment)).to be
+    end
+  end
+
+end