diff --git a/spec/lib/use_case/user/ban_spec.rb b/spec/lib/use_case/user/ban_spec.rb
new file mode 100644
index 00000000..b7f41d3d
--- /dev/null
+++ b/spec/lib/use_case/user/ban_spec.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe UseCase::User::Ban do
+  let!(:target_user) { FactoryBot.create(:user) }
+  let!(:source_user) { FactoryBot.create(:user) }
+  let!(:question) { FactoryBot.create(:question, user: target_user) }
+  let!(:inbox_entry) { FactoryBot.create(:inbox_entry, user: source_user, question: question) }
+  let!(:report) { Report.create(type: "Reports::Question", target_user_id: target_user.id, target_id: question.id, user_id: source_user.id) }
+
+  describe "#call" do
+    context "when banning a user" do
+      let(:expiry) { nil }
+
+      context "when reason is spam" do
+        let(:reason) { UseCase::User::Ban::REASON_SPAM }
+        subject { described_class.call(target_user_id: target_user.id, source_user_id: source_user.id, reason: reason, expiry: expiry) }
+
+        it "removes profile information" do
+          subject
+          target_user.reload
+
+          expect(target_user.profile.display_name).to be_nil
+          expect(target_user.profile.description).to eq("")
+          expect(target_user.profile.location).to eq("")
+          expect(target_user.profile.website).to eq("")
+        end
+      end
+
+      context "when ban is permanent" do
+        let(:reason) { "Other reason" }
+        subject { described_class.call(target_user_id: target_user.id, source_user_id: source_user.id, reason: reason, expiry: expiry) }
+
+        it "removes inbox entries for the questions sent by the user" do
+          expect { subject }.to change { InboxEntry.joins(:question).where(questions: { user_id: target_user.id }).count }.from(1).to(0)
+        end
+
+        it "resolves reports related to the user" do
+          expect { subject }.to change { Report.where(target_user_id: target_user.id, resolved: true).count }.from(0).to(1)
+        end
+      end
+
+      context "when ban is temporary" do
+        let(:expiry) { 1.week.from_now }
+        let(:reason) { "Other reason" }
+        subject { described_class.call(target_user_id: target_user.id, source_user_id: source_user.id, reason: reason, expiry: expiry) }
+
+        it "does not remove inbox entries" do
+          expect { subject }.not_to(change { InboxEntry.joins(:question).where(questions: { user_id: target_user.id }).count })
+        end
+
+        it "does not resolve reports" do
+          expect { subject }.not_to(change { Report.where(target_user_id: target_user.id, resolved: true).count })
+        end
+      end
+    end
+  end
+end