add controller tests

test/controllers/admin/invitations_controller_test.rb

@@ -0,0 +1,116 @@
+require "test_helper"
+
+class Admin::InvitationsControllerTest < ActionDispatch::IntegrationTest
+  test "should redirect to login when not authenticated" do
+    get admin_invitations_path
+    assert_redirected_to login_path
+  end
+
+  test "should redirect to root when logged in as non-admin" do
+    login_as(users(:contributor_user))
+    get admin_invitations_path
+    assert_redirected_to root_path
+  end
+
+  test "should show invitations index when logged in as admin" do
+    login_as(users(:admin_user))
+    get admin_invitations_path
+    assert_response :success
+  end
+
+  test "should get new invitation page when logged in as admin" do
+    login_as(users(:admin_user))
+    get new_admin_invitation_path
+    assert_response :success
+  end
+
+  test "should create invitation when logged in as admin" do
+    login_as(users(:admin_user))
+
+    assert_difference("User.count", 1) do
+      post admin_invitations_path, params: {
+        user: {
+          email: "newuser@example.com",
+          name: "New User",
+          role: "contributor",
+          primary_language: "en"
+        }
+      }
+    end
+
+    assert_redirected_to admin_invitations_path
+
+    new_user = User.find_by(email: "newuser@example.com")
+    assert_not_nil new_user
+    assert_not_nil new_user.invitation_token
+    assert_not_nil new_user.invitation_sent_at
+    assert_nil new_user.invitation_accepted_at
+    assert_equal users(:admin_user).id, new_user.invited_by_id
+  end
+
+  test "should not create invitation with invalid data" do
+    login_as(users(:admin_user))
+
+    assert_no_difference("User.count") do
+      post admin_invitations_path, params: {
+        user: {
+          email: "",
+          name: "New User",
+          role: "contributor",
+          primary_language: "en"
+        }
+      }
+    end
+
+    assert_response :unprocessable_entity
+  end
+
+  test "should cancel pending invitation when logged in as admin" do
+    login_as(users(:admin_user))
+
+    assert_difference("User.count", -1) do
+      delete admin_invitation_path(users(:pending_invitation))
+    end
+
+    assert_redirected_to admin_invitations_path
+  end
+
+  test "should not cancel accepted invitation" do
+    login_as(users(:admin_user))
+
+    assert_no_difference("User.count") do
+      delete admin_invitation_path(users(:contributor_user))
+    end
+
+    assert_redirected_to admin_invitations_path
+    follow_redirect!
+    assert_select ".bg-red-50", /Cannot cancel an accepted invitation/
+  end
+
+  test "should not allow non-admin to create invitation" do
+    login_as(users(:contributor_user))
+
+    assert_no_difference("User.count") do
+      post admin_invitations_path, params: {
+        user: {
+          email: "newuser@example.com",
+          name: "New User",
+          role: "contributor",
+          primary_language: "en"
+        }
+      }
+    end
+
+    assert_redirected_to root_path
+  end
+
+  test "should not allow non-admin to cancel invitation" do
+    login_as(users(:contributor_user))
+
+    assert_no_difference("User.count") do
+      delete admin_invitation_path(users(:pending_invitation))
+    end
+
+    assert_redirected_to root_path
+  end
+end