1 files changed, 82 insertions, 0 deletions
diff --git a/spec/requests/api/v3/labels_spec.rb b/spec/requests/api/v3/labels_spec.rb
index 18e2c0d40c8..bcb0c6b9449 100644
--- a/spec/requests/api/v3/labels_spec.rb
+++ b/spec/requests/api/v3/labels_spec.rb
@@ -67,4 +67,86 @@ describe API::V3::Labels, api: true  do
       expect(priority_label_response['subscribed']).to be_falsey
     end
   end
+
+  describe "POST /projects/:id/labels/:label_id/subscription" do
+    context "when label_id is a label title" do
+      it "subscribes to the label" do
+        post v3_api("/projects/#{project.id}/labels/#{label1.title}/subscription", user)
+
+        expect(response).to have_http_status(201)
+        expect(json_response["name"]).to eq(label1.title)
+        expect(json_response["subscribed"]).to be_truthy
+      end
+    end
+
+    context "when label_id is a label ID" do
+      it "subscribes to the label" do
+        post v3_api("/projects/#{project.id}/labels/#{label1.id}/subscription", user)
+
+        expect(response).to have_http_status(201)
+        expect(json_response["name"]).to eq(label1.title)
+        expect(json_response["subscribed"]).to be_truthy
+      end
+    end
+
+    context "when user is already subscribed to label" do
+      before { label1.subscribe(user, project) }
+
+      it "returns 304" do
+        post v3_api("/projects/#{project.id}/labels/#{label1.id}/subscription", user)
+
+        expect(response).to have_http_status(304)
+      end
+    end
+
+    context "when label ID is not found" do
+      it "returns 404 error" do
+        post v3_api("/projects/#{project.id}/labels/1234/subscription", user)
+
+        expect(response).to have_http_status(404)
+      end
+    end
+  end
+
+  describe "DELETE /projects/:id/labels/:label_id/subscription" do
+    before { label1.subscribe(user, project) }
+
+    context "when label_id is a label title" do
+      it "unsubscribes from the label" do
+        delete v3_api("/projects/#{project.id}/labels/#{label1.title}/subscription", user)
+
+        expect(response).to have_http_status(200)
+        expect(json_response["name"]).to eq(label1.title)
+        expect(json_response["subscribed"]).to be_falsey
+      end
+    end
+
+    context "when label_id is a label ID" do
+      it "unsubscribes from the label" do
+        delete v3_api("/projects/#{project.id}/labels/#{label1.id}/subscription", user)
+
+        expect(response).to have_http_status(200)
+        expect(json_response["name"]).to eq(label1.title)
+        expect(json_response["subscribed"]).to be_falsey
+      end
+    end
+
+    context "when user is already unsubscribed from label" do
+      before { label1.unsubscribe(user, project) }
+
+      it "returns 304" do
+        delete v3_api("/projects/#{project.id}/labels/#{label1.id}/subscription", user)
+
+        expect(response).to have_http_status(304)
+      end
+    end
+
+    context "when label ID is not found" do
+      it "returns 404 error" do
+        delete v3_api("/projects/#{project.id}/labels/1234/subscription", user)
+
+        expect(response).to have_http_status(404)
+      end
+    end
+  end
 end