Why are assets not being loaded when running capybara/rspec tests?

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There can be various reasons for assets not being loaded when running capybara/rspec tests. Here are some possible reasons:

1. The asset pipeline is disabled in the test environment, which prevents the loading of assets. Make sure that the following line is not present in the test.rb file: config.assets.enabled = false.

2. The assets are not being precompiled. Run rake assets:precompile to precompile the assets and check if it resolves the issue.

3. The assets are not being served by the web server. Make sure that the following line is present in the test.rb file: config.serve_static_assets = true.

4. The assets are not being included in the test suite. Make sure that the following line is present in the spec_helper.rb file: config.include Capybara::DSL.

5. The assets are being loaded from a CDN. In this case, check if the CDN is accessible from the test environment.

6. The assets are being loaded from a third-party service that requires authentication. In this case, provide the required authentication details in the test environment.

7. The assets are being loaded from a different domain, and the domain is not whitelisted. Add the domain to the config.action_dispatch.ip_spoofing_check whitelist in the test.rb file.