Extract concern

#790

test/models/domain/discardable_test.rb

@@ -0,0 +1,29 @@
+require 'test_helper'
+
+class DomainDiscardableTest < ActiveSupport::TestCase
+  setup do
+    @domain = domains(:shop)
+  end
+
+  def test_discard_domain
+    @domain.discard
+    @domain.reload
+    assert QueJob.find_by("args->>0 = '#{@domain.id}'", job_class: DomainDeleteJob.name)
+    assert @domain.discarded?
+  end
+
+  def test_discard_invalid_domain
+    domain = domains(:invalid)
+    domain.discard
+    domain.reload
+    assert domain.discarded?, 'a domain should be discarded'
+  end
+
+  def test_keep_domain
+    @domain.discard
+    @domain.keep
+    @domain.reload
+    assert_nil QueJob.find_by("args->>0 = '#{@domain.id}'", job_class: DomainDeleteJob.name)
+    refute @domain.discarded?
+  end
+end