Expand coverage for "system checks" (#24216)

spec/lib/admin/system_check/database_schema_check_spec.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Admin::SystemCheck::DatabaseSchemaCheck do
+  subject(:check) { described_class.new(user) }
+
+  let(:user) { Fabricate(:user) }
+
+  it_behaves_like 'a check available to devops users'
+
+  describe 'pass?' do
+    context 'when database needs migration' do
+      before do
+        context = instance_double(ActiveRecord::MigrationContext, needs_migration?: true)
+        allow(ActiveRecord::Base.connection).to receive(:migration_context).and_return(context)
+      end
+
+      it 'returns false' do
+        expect(check.pass?).to be false
+      end
+    end
+
+    context 'when database does not need migration' do
+      before do
+        context = instance_double(ActiveRecord::MigrationContext, needs_migration?: false)
+        allow(ActiveRecord::Base.connection).to receive(:migration_context).and_return(context)
+      end
+
+      it 'returns true' do
+        expect(check.pass?).to be true
+      end
+    end
+  end
+
+  describe 'message' do
+    it 'sends class name symbol to message instance' do
+      allow(Admin::SystemCheck::Message).to receive(:new).with(:database_schema_check)
+
+      check.message
+
+      expect(Admin::SystemCheck::Message).to have_received(:new).with(:database_schema_check)
+    end
+  end
+end