Signer.getAddress() is not a function

[pakaplace]

Hi there!

First off, thank you so much for Ethers.js. I use it as much as possible throughout my app. I recently used it to automating contract deployment and account funding on test-rpc, which cut down our setup time for testing by at least an hour. I'll be sharing gists soon to help others, and plan on demonstrating ethers in a hackathon I'm mentoring at this fall.

Now, I'm trying to do injected web3 Dapp testing with Cypress, an end-to-end javascript testing framework similar to selenium.

cy.on('window:before:load', async(win) => {
        var provider = new ethers.providers.getDefaultProvider('rinkeby')
        var wallet = new ethers.Wallet(process.env.PK)
        let providerBridge = new ProviderBridge(provider, wallet)
        console.log("Provider bridge", providerBridge) // Provider and Signer are properly set
        win.web3 = new Web3(providerBridge)
        win.web3.eth.getBlockNumber((err, res) => {
          console.log("result,", res)
        })
        win.web3.eth.getAccounts().then(console.log)
        win.web3.eth.getAccounts((err, accounts) => {console.log(accounts)})
      })

window.web3 is setting properly^^

I create a web3 instance and log it out, isConnected is true and signer is set with the correct address. However, when I call win.web3.eth.getAccounts(), I encounter the error signer.getAddress() is not a function. The error is occurring in line 337 of this module's index.js. web3.eth.getBlockNumber()`, which does not require a signer, is working as it should.

For more context, please see this article on web3 integration tests . Note that I could not replicate the code this author used in his example with truffle-privatekey-provider.

I've tried using your .connectEthers(Provider, Signer) method as well.

Thanks for your help!

[ricmoo]

Is this on v3 or v4 of ethers? I will be overhauling the bridge soon for v4...

I’ll look more into getting this updated this week. :)

[pakaplace]

It's 3.0.27, and thanks! I also saw this question you answered and (naively) tried to set the wallet's provider manually (e.g. wallet.provider = ethers.providers.JsonRpcProvider('localhost:3000').

[pakaplace]

Hey @ricmoo , just bouncing this thread. Thanks!

[ricmoo]

Heya! I’ve started porting the bridge to v4., but thanks for the reminded, I’ll try to get it finished this week. :)

[Tbaut]

This issue is very old, and it looks like ethers-web3-bridge is not actively maintained, but the use case holds. I'd like to do exactly the same thing @pakaplace. To test a Dapp with Cypress, I would like to mock Metamask, and be able to programmatically sign messages or transactions with ethers. Did you achieve this? Any pointer to how this would be feasible?

[ricmoo]

You want the Eip1193Bridge. It’s still experimental, but I’ve used it a few times. :)

[ricmoo]

(I need to add more documentation for it; the parameters are flipped compared to this old repo, new Eip1193Provider(signer, provider))

[Tbaut]

Thank you so much Ric, will take a look at it :)

[ricmoo]

No worries. I'll archive this project and add a link to the readme to the above package. :)

[sandys]

@ricmoo @Tbaut is there any minimal example with the new Eip1193Provider ? i wasnt able to find the equivalent for an injected in-page provider using rinkeby.

[ricmoo]

This repo is deprecated; please see the v5 docs instead.