Improve admin page (#4121)

* Improve admin page

* Fix test

* Add spec

* Improve select style

spec/models/form/status_batch_spec.rb

@@ -0,0 +1,52 @@
+require 'rails_helper'
+
+describe Form::StatusBatch do
+  let(:form) { Form::StatusBatch.new(action: action, status_ids: status_ids) }
+  let(:status) { Fabricate(:status) }
+
+  describe 'with nsfw action' do
+    let(:status_ids) { [status.id, nonsensitive_status.id, sensitive_status.id] }
+    let(:nonsensitive_status) { Fabricate(:status, sensitive: false) }
+    let(:sensitive_status) { Fabricate(:status, sensitive: true) }
+    let!(:shown_media_attachment) { Fabricate(:media_attachment, status: nonsensitive_status) }
+    let!(:hidden_media_attachment) { Fabricate(:media_attachment, status: sensitive_status) }
+
+    context 'nsfw_on' do
+      let(:action) { 'nsfw_on' }
+
+      it { expect(form.save).to be true }
+      it { expect { form.save }.to change { nonsensitive_status.reload.sensitive }.from(false).to(true) }
+      it { expect { form.save }.not_to change { sensitive_status.reload.sensitive } }
+      it { expect { form.save }.not_to change { status.reload.sensitive } }
+    end
+
+    context 'nsfw_off' do
+      let(:action) { 'nsfw_off' }
+
+      it { expect(form.save).to be true }
+      it { expect { form.save }.to change { sensitive_status.reload.sensitive }.from(true).to(false) }
+      it { expect { form.save }.not_to change { nonsensitive_status.reload.sensitive } }
+      it { expect { form.save }.not_to change { status.reload.sensitive } }
+    end
+  end
+
+  describe 'with delete action' do
+    let(:status_ids) { [status.id] }
+    let(:action) { 'delete' }
+    let!(:another_status) { Fabricate(:status) }
+
+    before do
+      allow(RemovalWorker).to receive(:perform_async)
+    end
+
+    it 'call RemovalWorker' do
+      form.save
+      expect(RemovalWorker).to have_received(:perform_async).with(status.id)
+    end
+
+    it 'do not call RemovalWorker' do
+      form.save
+      expect(RemovalWorker).not_to have_received(:perform_async).with(another_status.id)
+    end
+  end
+end