diff --git a/spec/models/queries/work_packages/filter/attachment_content_filter_spec.rb b/spec/models/queries/work_packages/filter/attachment_content_filter_spec.rb
new file mode 100644
index 0000000000..9bd6e18ecd
--- /dev/null
+++ b/spec/models/queries/work_packages/filter/attachment_content_filter_spec.rb
@@ -0,0 +1,62 @@
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2017 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+require 'spec_helper'
+
+describe Queries::WorkPackages::Filter::AttachmentContentFilter, type: :model do
+  it_behaves_like 'basic query filter' do
+    let(:order) { 8 }
+    let(:type) { :text }
+    let(:class_key) { :attachment_content }
+
+    describe '#available?' do
+      it 'is available' do
+        expect(instance).to be_available
+      end
+    end
+
+    describe '#allowed_values' do
+      it 'is nil' do
+        expect(instance.allowed_values).to be_nil
+      end
+    end
+
+    describe '#valid_values!' do
+      it 'is a noop' do
+        instance.values = ['none', 'is', 'changed']
+
+        instance.valid_values!
+
+        expect(instance.values)
+          .to match_array ['none', 'is', 'changed']
+      end
+    end
+
+    it_behaves_like 'non ar filter'
+  end
+end
diff --git a/spec/models/queries/work_packages/filter/attachment_file_name_filter_spec.rb b/spec/models/queries/work_packages/filter/attachment_file_name_filter_spec.rb
new file mode 100644
index 0000000000..8b1511bc5b
--- /dev/null
+++ b/spec/models/queries/work_packages/filter/attachment_file_name_filter_spec.rb
@@ -0,0 +1,62 @@
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2017 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+require 'spec_helper'
+
+describe Queries::WorkPackages::Filter::AttachmentFileNameFilter, type: :model do
+  it_behaves_like 'basic query filter' do
+    let(:order) { 8 }
+    let(:type) { :text }
+    let(:class_key) { :attachment_file_name }
+
+    describe '#available?' do
+      it 'is available' do
+        expect(instance).to be_available
+      end
+    end
+
+    describe '#allowed_values' do
+      it 'is nil' do
+        expect(instance.allowed_values).to be_nil
+      end
+    end
+
+    describe '#valid_values!' do
+      it 'is a noop' do
+        instance.values = ['none', 'is', 'changed']
+
+        instance.valid_values!
+
+        expect(instance.values)
+          .to match_array ['none', 'is', 'changed']
+      end
+    end
+
+    it_behaves_like 'non ar filter'
+  end
+end