Implement UI for Admin Search of Hashtags (#30880)

spec/models/admin/tag_filter_spec.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Admin::TagFilter do
+  describe 'with invalid params' do
+    it 'raises with key error' do
+      filter = described_class.new(wrong: true)
+
+      expect { filter.results }.to raise_error(/wrong/)
+    end
+
+    it 'raises with status scope error' do
+      filter = described_class.new(status: 'unknown')
+
+      expect { filter.results }.to raise_error(/Unknown status: unknown/)
+    end
+
+    it 'raises with order value error' do
+      filter = described_class.new(order: 'unknown')
+
+      expect { filter.results }.to raise_error(/Unknown order: unknown/)
+    end
+  end
+
+  describe '#results' do
+    let(:listable_tag) { Fabricate(:tag, name: 'test1', listable: true) }
+    let(:not_listable_tag) { Fabricate(:tag, name: 'test2', listable: false) }
+
+    it 'returns tags filtered by name' do
+      filter = described_class.new(name: 'test')
+
+      expect(filter.results).to eq([listable_tag, not_listable_tag])
+    end
+  end
+end