Add admin notifications for new Mastodon versions (#26582)

spec/models/software_update_spec.rb

@@ -0,0 +1,87 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe SoftwareUpdate do
+  describe '.pending_to_a' do
+    before do
+      allow(Mastodon::Version).to receive(:gem_version).and_return(Gem::Version.new(mastodon_version))
+
+      Fabricate(:software_update, version: '3.4.42', type: 'patch', urgent: true)
+      Fabricate(:software_update, version: '3.5.0', type: 'minor', urgent: false)
+      Fabricate(:software_update, version: '4.2.0', type: 'major', urgent: false)
+    end
+
+    context 'when the Mastodon version is an outdated release' do
+      let(:mastodon_version) { '3.4.0' }
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('3.4.42', '3.5.0', '4.2.0')
+      end
+    end
+
+    context 'when the Mastodon version is more recent than anything last returned by the server' do
+      let(:mastodon_version) { '5.0.0' }
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to eq []
+      end
+    end
+
+    context 'when the Mastodon version is an outdated nightly' do
+      let(:mastodon_version) { '4.3.0-nightly.2023-09-10' }
+
+      before do
+        Fabricate(:software_update, version: '4.3.0-nightly.2023-09-12', type: 'major', urgent: true)
+      end
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('4.3.0-nightly.2023-09-12')
+      end
+    end
+
+    context 'when the Mastodon version is a very outdated nightly' do
+      let(:mastodon_version) { '4.2.0-nightly.2023-07-10' }
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('4.2.0')
+      end
+    end
+
+    context 'when the Mastodon version is an outdated dev version' do
+      let(:mastodon_version) { '4.3.0-0.dev.0' }
+
+      before do
+        Fabricate(:software_update, version: '4.3.0-0.dev.2', type: 'major', urgent: true)
+      end
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('4.3.0-0.dev.2')
+      end
+    end
+
+    context 'when the Mastodon version is an outdated beta version' do
+      let(:mastodon_version) { '4.3.0-beta1' }
+
+      before do
+        Fabricate(:software_update, version: '4.3.0-beta2', type: 'major', urgent: true)
+      end
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('4.3.0-beta2')
+      end
+    end
+
+    context 'when the Mastodon version is an outdated beta version and there is a rc' do
+      let(:mastodon_version) { '4.3.0-beta1' }
+
+      before do
+        Fabricate(:software_update, version: '4.3.0-rc1', type: 'major', urgent: true)
+      end
+
+      it 'returns the expected versions' do
+        expect(described_class.pending_to_a.pluck(:version)).to contain_exactly('4.3.0-rc1')
+      end
+    end
+  end
+end