Flow•3mo ago

joshua | Flow (2024-04-01)

[C1.0] FlowToken.Vault implements the FungibleToken.Vault interface. If I have a FlowToken.Vault in storage, should I be able to borrow a &{FungibleToken.Vault} reference from it using:

signer.storage.borrow<&{FungibleToken.Vault}>(from: /storage/flowTokenVault)

signer.storage.borrow<&{FungibleToken.Vault}>(from: /storage/flowTokenVault)

I could have sworn I was told that it would be possible in Cadence 1.0, but I'm trying right now and it is not working

10 Replies

Needle•3mo ago

I've created a thread for your message. Please continue any relevant discussion in this thread. You can rename this thread using /title <new title> If this is a technical question that others may benefit from, considering also asking it on Stackoverflow: https://stackoverflow.com/questions/ask?tags=onflow-cadence

Unknown User•3mo ago

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joshua•3mo ago

yeah I am getting this error:

        Execution failed:
            error: assertion failed: given value is: I.Test.Test.TransactionResult(error: I.Test.Test.Error(message: "[Error Code: 1101] error caused by: 1 error occurred:\n\t* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:\nerror: failed to force-cast value: expected type `{FungibleToken.Vault}`, got `FlowToken.Vault`\n  --> a989cb4c9b7010782b78724f66abae88e6a90490d35bf987521fbcce1b38e265:19:11\n   |\n19 |         if signer.storage.borrow<&{FungibleToken.Vault}>(from: vaultPath) == nil {\n   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n\n\n"), status: I.Test.Test.ResultStatus(rawValue: 1))
              --> tests/test_example_nft.cdc:64:4

        Execution failed:
            error: assertion failed: given value is: I.Test.Test.TransactionResult(error: I.Test.Test.Error(message: "[Error Code: 1101] error caused by: 1 error occurred:\n\t* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:\nerror: failed to force-cast value: expected type `{FungibleToken.Vault}`, got `FlowToken.Vault`\n  --> a989cb4c9b7010782b78724f66abae88e6a90490d35bf987521fbcce1b38e265:19:11\n   |\n19 |         if signer.storage.borrow<&{FungibleToken.Vault}>(from: vaultPath) == nil {\n   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n\n\n"), status: I.Test.Test.ResultStatus(rawValue: 1))
              --> tests/test_example_nft.cdc:64:4

This is in my automated tests in the flow-nft repo maybe there is something about my setup that is wrong. maybe I'm using two different FungibleToken contracts or something yeah I think it is because I was using different FungibleToken versions, but that brings up another question. I'm trying to import the pre-deployed emulator FungibleToken from 0xee82856bf20e2aa6 in the cadence testing framework, but it is telling me that there is nothing at that address

Unknown User•3mo ago

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joshua•3mo ago

but I know that is the correct address in the emulator because I use it in all my Go tests

Unknown User•3mo ago

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joshua•3mo ago

does the cadence testing framework emulator have different addresses or something?

Unknown User•3mo ago

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joshua•3mo ago

Is there a list of which contracts are deployed to which addresses somewhere?

Unknown User•3mo ago

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joshua | Flow (2024-04-01)