Add specs for InvitePolicy (#9589)

spec/policies/invite_policy_spec.rb

@@ -0,0 +1,94 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+require 'pundit/rspec'
+
+RSpec.describe InvitePolicy do
+  let(:subject) { described_class }
+  let(:admin)   { Fabricate(:user, admin: true).account }
+  let(:john)    { Fabricate(:user).account }
+
+  permissions :index? do
+    context 'staff?' do
+      it 'permits' do
+        expect(subject).to permit(admin, Invite)
+      end
+    end
+  end
+
+  permissions :create? do
+    context 'min_required_role?' do
+      it 'permits' do
+        allow_any_instance_of(described_class).to receive(:min_required_role?) { true }
+        expect(subject).to permit(john, Invite)
+      end
+    end
+
+    context 'not min_required_role?' do
+      it 'denies' do
+        allow_any_instance_of(described_class).to receive(:min_required_role?) { false }
+        expect(subject).to_not permit(john, Invite)
+      end
+    end
+  end
+
+  permissions :deactivate_all? do
+    context 'admin?' do
+      it 'permits' do
+        expect(subject).to permit(admin, Invite)
+      end
+    end
+
+    context 'not admin?' do
+      it 'denies' do
+        expect(subject).to_not permit(john, Invite)
+      end
+    end
+  end
+
+  permissions :destroy? do
+    context 'owner?' do
+      it 'permits' do
+        expect(subject).to permit(john, Fabricate(:invite, user: john.user))
+      end
+    end
+
+    context 'not owner?' do
+      context 'Setting.min_invite_role == "admin"' do
+        before do
+          Setting.min_invite_role = 'admin'
+        end
+
+        context 'admin?' do
+          it 'permits' do
+            expect(subject).to permit(admin, Fabricate(:invite))
+          end
+        end
+
+        context 'not admin?' do
+          it 'denies' do
+            expect(subject).to_not permit(john, Fabricate(:invite))
+          end
+        end
+      end
+
+      context 'Setting.min_invite_role != "admin"' do
+        before do
+          Setting.min_invite_role = 'else'
+        end
+
+        context 'staff?' do
+          it 'permits' do
+            expect(subject).to permit(admin, Fabricate(:invite))
+          end
+        end
+
+        context 'not staff?' do
+          it 'denies' do
+            expect(subject).to_not permit(john, Fabricate(:invite))
+          end
+        end
+      end
+    end
+  end
+end