add request specs

spec/requests/sessions_request_spec.rb

@@ -23,4 +23,18 @@
     expect(response).to redirect_to("/session/new")
     expect(flash[:error]).to include("Please try again.")
   end
+
+  it "get /auth/result with error param redirects to login" do
+    get "/auth/result", params: { error: "there was an error" }
+    expect(response).to redirect_to("/session/new")
+    expect(flash[:error]).to include("Please try again.")
+  end
+
+  it "get /auth/result successful" do
+    code = "ABC123"
+    login_gov = instance_double(LoginGov)
+    allow(LoginGov).to receive(:new).and_return(login_gov)
+    allow(login_gov).to receive(:exchange_token_from_auth_result).with(code).and_return({ email: "[email protected]" })
+    get "/auth/result", params: { code: }
+  end
 end