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wormhole
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wormhole/testing/weth-switch/README.md

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  1. stand up a minimal devnet
  2. manually run cd ethereum/ && npx truffle exec scripts/deploy_test_token.js to get a second WETH
  3. update the BridgeImplementation.sol with the address
  4. remove all migrations except 3_deploy_bridge and comment out everything except the implementation and run cd ethereum/ && npx truffle migrate
  5. create and sign a governance to upgrade the TokenBridge to the new implementation contract address - e.g. cd clients/token_bridge/ && npm start -- generate_upgrade_chain_vaa 2 0x000000000000000000000000dAA71FBBA28C946258DD3d5FcC9001401f72270F
  6. update test.js and run it with node test.js
  7. do some transfers in the ui to ensure that everything works as expected