[Cadence Testing Framework] Pretty Print Error Messages when running tests #3403
Description
Issue to be solved
When running tests with the Cadence testing framework, the errors are spat out as a huge wall of text. It would be great if they were printed in a way that makes them easier to read.
Example:
joshuahannan@Joshuas-MacBook-Pro-2 flow-usdc % flow-c1 test --cover --covercode="contracts" tests/*.cdc
❌ Command Error: Execution failed:
error: assertion failed: given value is: 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: cannot deploy invalid contract\n --> 751d5fec3fe39dfac9e27973430720b5fcf70588d93503e349d5f4b88f80e0e4:4:16\n |\n4 | signer.contracts.add(name: \"FiatToken\", code: \"696d706f72742043727970746f0a696d706f72742046756e6769626c65546f6b656e2066726f6d203078303030303030303030303030303030320a696d706f72742046756e6769626c65546f6b656e4d6574616461746156696577732066726f6d203078303030303030303030303030303030320a696d706f7274204d6574616461746156696577732066726f6d203078303030303030303030303030303030310a696d706f7274204f6e436861696e4d756c74695369672066726f6d203078303030303030303030303030303030370a696d706f72742049427... \n | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n\nerror: resource `FiatToken.Admin` does not conform to resource interface `OnChainMultiSig.PublicSigner`\n --> 0000000000000007.FiatToken:334:22\n |\n334 | \taccess(all)\tresource Admin: OnChainMultiSig.PublicSigner, ResourceId, AdminCapReceiver { \n | \t \t ^\n ... \n |\n391 | \t\taccess(all) fun UUID(): UInt64{ \n | \t\t ---- mismatch here\n ... \n |\n395 | \t\taccess(all) fun getTxIndex(): UInt64{ \n | \t\t ---------- mismatch here\n\n\n")
--> test_helpers.cdc:26:4
Suggested Solution
Format the output so that the errors are easy to read and understand