diff --git a/spec/controllers/moderation/reports_controller_spec.rb b/spec/controllers/moderation/reports_controller_spec.rb
index 0a845606..daed0ab8 100644
--- a/spec/controllers/moderation/reports_controller_spec.rb
+++ b/spec/controllers/moderation/reports_controller_spec.rb
@@ -6,15 +6,116 @@ describe Moderation::ReportsController, type: :controller do
   let(:user) { FactoryBot.create :user, roles: ["moderator"] }
 
   describe "#index" do
-    subject { get :index }
+    shared_examples_for "sets the expected ivars" do
+      let(:expected_assigns) { {} }
 
-    before do
-      sign_in user
+      it "sets the expected ivars" do
+        subject
+
+        expected_assigns.each do |name, value|
+          expect(assigns[name]).to eq(value)
+        end
+      end
     end
 
-    it "renders the moderation/reports/index template" do
-      subject
-      expect(response).to render_template("moderation/reports/index")
+    context "template rendering" do
+      let(:other_user) { FactoryBot.create :user }
+      let(:report) { Report.create(user:, target_id: other_user.id, type: "Reports::User") }
+
+      subject { get :index }
+
+      before do
+        report
+        sign_in user
+      end
+
+      it "renders the moderation/reports/index template" do
+        subject
+        expect(response).to render_template("moderation/reports/index")
+      end
+
+      include_examples "sets the expected ivars" do
+        let(:expected_assigns) do
+          {
+            reports:         [report],
+            reports_last_id: report.id,
+          }
+        end
+      end
+    end
+
+    context "filtering for target users" do
+      let(:other_user) { FactoryBot.create :user }
+      let(:question) { FactoryBot.create :question }
+      let(:report) { Report.create(user:, target_id: other_user.id, target_user_id: other_user.id, type: "Reports::User") }
+      let(:report2) { Report.create(user:, target_id: question.id, target_user_id: nil, type: "Reports::Question") }
+
+      subject { get :index, params: { target_user: other_user.screen_name } }
+
+      before do
+        report
+        report2
+        sign_in user
+      end
+
+      include_examples "sets the expected ivars" do
+        let(:expected_assigns) do
+          {
+            reports:         [report],
+            reports_last_id: report.id,
+          }
+        end
+      end
+    end
+
+    context "filtering for users" do
+      let(:report_user) { FactoryBot.create :user }
+      let(:other_user) { FactoryBot.create :user }
+      let(:question) { FactoryBot.create :question }
+      let(:report) { Report.create(user:, target_id: other_user.id, target_user_id: other_user.id, type: "Reports::User") }
+      let(:report2) { Report.create(user: report_user, target_id: question.id, target_user_id: nil, type: "Reports::Question") }
+
+      subject { get :index, params: { user: report_user.screen_name } }
+
+      before do
+        report
+        report2
+        sign_in user
+      end
+
+      include_examples "sets the expected ivars" do
+        let(:expected_assigns) do
+          {
+            reports:         [report2],
+            reports_last_id: report2.id,
+          }
+        end
+      end
+    end
+
+    context "filtering for type" do
+      let(:report_user) { FactoryBot.create :user }
+      let(:other_user) { FactoryBot.create :user }
+      let(:question) { FactoryBot.create :question }
+      let(:report) { Report.create(user:, target_id: other_user.id, target_user_id: other_user.id, type: "Reports::User") }
+      let(:report2) { Report.create(user: report_user, target_id: question.id, target_user_id: nil, type: "Reports::Question") }
+
+      subject { get :index, params: { type: "question" } }
+
+      before do
+        report
+        report2
+        sign_in user
+      end
+
+      include_examples "sets the expected ivars" do
+        let(:expected_assigns) do
+          {
+            reports:         [report2],
+            reports_last_id: report2.id,
+          }
+        end
+      end
     end
   end
 end