Deploying Uniswap v2 / Sushiswap or similar in Brownie, Hardhat or Truffle test suite

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I am writing an automated test suite that needs to test functions against Uniswap v2 style automated market marker: do swaps and use different order routing. Thus, routers need to be deployed.

Are there any existing examples of how to deploy a testable Uniswap v2 style exchange in Brownie? Because Brownie is a minority of smart contract developers, are there any examples for Truffle or Hardhat?

I am also exploring the option of using a mainnet fork, but I am not sure if this operation is too expensive (slow) to be used in unit testing.



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