<!-- Vote on feature requests by adding a 👍. This helps maintainers prioritize what to work on. * Please fill out this template with all the relevant information so we can understand what it is you are requesting. We appreciate features requested and PRs submitted! * Please make sure that you are familiar with and follow the Code of Conduct for this project (found in the CODE_OF_CONDUCT.md file). It'd be great if after the discussion you're the one who submits the PR that implements this feature. If you've never done that before, that's great! Check this free short video tutorial to learn how: http://kcd.im/pull-request --> ### Describe the feature you'd like: add an exported function for global configuration to override/setup default value. #### Why in some scenarios we may need to setup some config globally, like extend timeout for async utils. But there is no way for these global setup. We can just set them one by one in each test. <!-- A clear and concise description of what you want to happen. Add any considered drawbacks. --> ### Suggested implementation: we can maintain a global config to be default value, then we can get default values from this global config instead of setup each function. Then user can call global config function to override default config or just pass custom params when using a specific function during testing. the priority will be: custom params > global config <!-- Helpful but optional 😀 --> ### Describe alternatives you've considered: <!-- A clear and concise description of any alternative solutions or features you've considered. --> pass config params in each test. ### Teachability, Documentation, Adoption, Migration Strategy: No migration actions required by users. All the changes should not break any feature for current behavior. Just adding a new API for setup config globally. <!-- If you can, explain how users will be able to use this and possibly write out a version of the docs. --> byw, I would have a try to add this feature and document if we decide to add this feature after discuss:)