1 files changed, 81 insertions, 0 deletions
diff --git a/spec/services/zoom_notes_service_spec.rb b/spec/services/zoom_notes_service_spec.rb
new file mode 100644
index 00000000000..419ecf3f374
--- /dev/null
+++ b/spec/services/zoom_notes_service_spec.rb
@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ZoomNotesService do
+  describe '#execute' do
+    let(:issue) { OpenStruct.new(description: description) }
+    let(:project) { Object.new }
+    let(:user) { Object.new }
+    let(:description) { 'an issue description' }
+    let(:old_description) { nil }
+
+    subject { described_class.new(issue, project, user, old_description: old_description) }
+
+    shared_examples 'no notifications' do
+      it "doesn't create notifications" do
+        expect(SystemNoteService).not_to receive(:zoom_link_added)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+
+        subject.execute
+      end
+    end
+
+    it_behaves_like 'no notifications'
+
+    context 'when the zoom link exists in both description and old_description' do
+      let(:description) { 'a changed issue description https://zoom.us/j/123' }
+      let(:old_description) { 'an issue description https://zoom.us/j/123' }
+
+      it_behaves_like 'no notifications'
+    end
+
+    context "when the zoom link doesn't exist in both description and old_description" do
+      let(:description) { 'a changed issue description' }
+      let(:old_description) { 'an issue description' }
+
+      it_behaves_like 'no notifications'
+    end
+
+    context 'when description == old_description' do
+      let(:old_description) { 'an issue description' }
+
+      it_behaves_like 'no notifications'
+    end
+
+    context 'when the description contains a zoom link and old_description is nil' do
+      let(:description) { 'a changed issue description https://zoom.us/j/123' }
+
+      it 'creates a zoom_link_added notification' do
+        expect(SystemNoteService).to receive(:zoom_link_added).with(issue, project, user)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+
+        subject.execute
+      end
+    end
+
+    context 'when the zoom link has been added to the description' do
+      let(:description) { 'a changed issue description https://zoom.us/j/123' }
+      let(:old_description) { 'an issue description' }
+
+      it 'creates a zoom_link_added notification' do
+        expect(SystemNoteService).to receive(:zoom_link_added).with(issue, project, user)
+        expect(SystemNoteService).not_to receive(:zoom_link_removed)
+
+        subject.execute
+      end
+    end
+
+    context 'when the zoom link has been removed from the description' do
+      let(:description) { 'a changed issue description' }
+      let(:old_description) { 'an issue description https://zoom.us/j/123' }
+
+      it 'creates a zoom_link_removed notification' do
+        expect(SystemNoteService).not_to receive(:zoom_link_added).with(issue, project, user)
+        expect(SystemNoteService).to receive(:zoom_link_removed)
+
+        subject.execute
+      end
+    end
+  end
+end