Define state transitions for uninstalling apps

Added :uninstalled state as wasn't sure if we should be destroying the
cluster apps

app/models/clusters/concerns/application_status.rb

@@ -25,9 +25,12 @@ module Clusters
           state :updating, value: 4
           state :updated, value: 5
           state :update_errored, value: 6
+          state :uninstalling, value: 7
+          state :uninstall_errored, value: 8
+          state :uninstalled, value: 9
 
           event :make_scheduled do
-            transition [:installable, :errored, :installed, :updated, :update_errored] => :scheduled
+            transition [:installable, :errored, :installed, :updated, :update_errored, :uninstall_errored] => :scheduled
           end
 
           event :make_installing do
@@ -40,8 +43,9 @@ module Clusters
           end
 
           event :make_errored do
-            transition any - [:updating] => :errored
+            transition any - [:updating, :uninstalling] => :errored
             transition [:updating] => :update_errored
+            transition [:uninstalling] => :uninstall_errored
           end
 
           event :make_updating do
@@ -52,6 +56,14 @@ module Clusters
             transition any => :update_errored
           end
 
+          event :make_uninstalling do
+            transition [:scheduled] => :uninstalling
+          end
+
+          event :make_uninstalled do
+            transition [:uninstalling] => :uninstalled
+          end
+
           before_transition any => [:scheduled] do |app_status, _|
             app_status.status_reason = nil
           end
@@ -65,7 +77,7 @@ module Clusters
             app_status.status_reason = nil
           end
 
-          before_transition any => [:update_errored] do |app_status, transition|
+          before_transition any => [:update_errored, :uninstall_errored] do |app_status, transition|
             status_reason = transition.args.first
             app_status.status_reason = status_reason if status_reason
           end

spec/factories/clusters/applications/helm.rb

@@ -6,6 +6,11 @@ FactoryBot.define do
       status(-2)
     end
 
+    trait :errored do
+      status(-1)
+      status_reason 'something went wrong'
+    end
+
     trait :installable do
       status 0
     end
@@ -30,16 +35,24 @@ FactoryBot.define do
       status 5
     end
 
-    trait :errored do
-      status(-1)
+    trait :update_errored do
+      status(6)
       status_reason 'something went wrong'
     end
 
-    trait :update_errored do
-      status(6)
+    trait :uninstalling do
+      status 7
+    end
+
+    trait :uninstall_errored do
+      status(8)
       status_reason 'something went wrong'
     end
 
+    trait :uninstalled do
+      status 9
+    end
+
     trait :timeouted do
       installing
       updated_at { ClusterWaitForAppInstallationWorker::TIMEOUT.ago }

spec/support/shared_examples/models/cluster_application_status_shared_examples.rb

@@ -114,6 +114,17 @@ shared_examples 'cluster application status specs' do |application_name|
           expect(subject.status_reason).to eq(reason)
         end
       end
+
+      context 'application is uninstalling' do
+        subject { create(application_name, :uninstalling) }
+
+        it 'is uninstall_errored' do
+          subject.make_errored(reason)
+
+          expect(subject).to be_uninstall_errored
+          expect(subject.status_reason).to eq(reason)
+        end
+      end
     end
 
     describe '#make_scheduled' do
@@ -125,6 +136,16 @@ shared_examples 'cluster application status specs' do |application_name|
         expect(subject).to be_scheduled
       end
 
+      describe 'when installed' do
+        subject { create(application_name, :installed) }
+
+        it 'is scheduled' do
+          subject.make_scheduled
+
+          expect(subject).to be_scheduled
+        end
+      end
+
       describe 'when was errored' do
         subject { create(application_name, :errored) }
 
@@ -148,6 +169,38 @@ shared_examples 'cluster application status specs' do |application_name|
           expect(subject.status_reason).to be_nil
         end
       end
+
+      describe 'when was uninstall_errored' do
+        subject { create(application_name, :uninstall_errored) }
+
+        it 'clears #status_reason' do
+          expect(subject.status_reason).not_to be_nil
+
+          subject.make_scheduled!
+
+          expect(subject.status_reason).to be_nil
+        end
+      end
+    end
+
+    describe '#make_uninstalling' do
+      subject { create(application_name, :scheduled) }
+
+      it 'is uninstalling' do
+        subject.make_uninstalling!
+
+        expect(subject).to be_uninstalling
+      end
+    end
+
+    describe '#make_uninstalled' do
+      subject { create(application_name, :uninstalling) }
+
+      it 'is uninstalled' do
+        subject.make_uninstalled!
+
+        expect(subject).to be_uninstalled
+      end
     end
   end
 
@@ -155,16 +208,19 @@ shared_examples 'cluster application status specs' do |application_name|
     using RSpec::Parameterized::TableSyntax
 
     where(:trait, :available) do
-      :not_installable  | false
-      :installable      | false
-      :scheduled        | false
-      :installing       | false
-      :installed        | true
-      :updating         | false
-      :updated          | true
-      :errored          | false
-      :update_errored   | false
-      :timeouted        | false
+      :not_installable   | false
+      :installable       | false
+      :scheduled         | false
+      :installing        | false
+      :installed         | true
+      :updating          | false
+      :updated           | true
+      :errored           | false
+      :update_errored    | false
+      :uninstalling      | false
+      :uninstall_errored | false
+      :uninstalled       | false
+      :timeouted         | false
     end
 
     with_them do