Lesson 7: Unit testing the receive and fallback functions

[pacelliv]

I managed to test the functionality of the receive function with the following test:

Despite the test being successful I have doubts about this command line: await fundMe.signer.sendTransaction().

The ethers documentation defines Signers as an abstraction of an Ethereum Account, which can be used to sign messages and transactions and send signed transactions to the Ethereum Network to execute state changing operations.

In this contract I'm using my Metamask account as the Ethereum Account to sign transactions, so I decided to change await fundMe.signer.sendTransaction() to await deployer.signer.sendTransaction(), because the deployer contains my private key, but the test failed with the following error message:

I hope someone can help me clarify why await fundMe.signer.sendTransaction() is the correct method.

[pacelliv]

I understood the method: to read data from the blockchain or make state changing operations I need to be connected to an Ethereum Accounts (a smart contract).