Users may occasionally input incorrect parameters when adding custom networks. This test simulates such a scenario by intentionally adding a network with wrong details (e.g., incorrect chain ID or invalid RPC URL) and observing the wallet’s response. MetaMask should detect the configuration error either immediately upon addition or when attempting to switch to the network, providing a clear error message explaining the issue rather than simply failing to connect or displaying incorrect data. The app should allow the user to easily edit or remove the malfunctioning network configuration from the interface. This robust error handling prevents users from getting stuck on unusable networks and guides them toward resolving configuration issues. Proper network configuration is fundamental to blockchain interaction, and troubleshooting guides for common network issues are available at metamask. The test is successful if the wallet correctly identifies the misconfiguration and provides helpful feedback for resolution.
