pagination component tests

spec/components/blacklight/facet_field_pagination_component_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+require 'rails_helper'
+
+RSpec.describe Blacklight::FacetFieldPaginationComponent, type: :component do
+  let(:facet_field) { double('facet_field') }
+  let(:total_unique_facets) { 42 }
+
+  describe '#initialize' do
+    context 'when total_unique_facets is provided' do
+      it 'sets the facet_field and total_unique_facets attributes' do
+        component = Blacklight::FacetFieldPaginationComponent.new(facet_field: facet_field, total_unique_facets: total_unique_facets)
+
+        expect(component.facet_field).to eq(facet_field)
+        expect(component.total_unique_facets).to eq(total_unique_facets)
+      end
+    end
+
+    context 'when total_unique_facets is not provided' do
+      it 'sets the total_unique_facets attribute to nil' do
+        component = Blacklight::FacetFieldPaginationComponent.new(facet_field: facet_field)
+
+        expect(component.facet_field).to eq(facet_field)
+        expect(component.total_unique_facets).to be_nil
+      end
+    end
+  end
+end