Allow to run tests even when contracts folder doesn't exist

[shekhirin]

Component

Forge

Describe the feature you would like

Allow to run tests even if no src folder present. I think, same can be applied to running scripts without src and test folders but I'm not sure whether it's already the case or not.

Additional context

I tried to run tests for https://github.com/siewchongche/mev-example/tree/curve20220521 but it didn't work because src folder wasn't created:

➜  mev-example git:(curve20220521) forge test --fork-url $ETH_RPC_URL --fork-block-number 14811888 -vvv
Error:
no contracts to compile, contracts folder "/Users/shekhirin/Projects/mev-example/src" does not exist.
Check the configured workspace settings:
root: /Users/shekhirin/Projects/mev-example
contracts: /Users/shekhirin/Projects/mev-example/src
artifacts: /Users/shekhirin/Projects/mev-example/out
tests: /Users/shekhirin/Projects/mev-example/test
scripts: /Users/shekhirin/Projects/mev-example/script
libs:
    /Users/shekhirin/Projects/mev-example/lib
remappings:
    ds-test/=/Users/shekhirin/Projects/mev-example/lib/forge-std/lib/ds-test/src/
    forge-std/=/Users/shekhirin/Projects/mev-example/lib/forge-std/src/
    openzeppelin-contracts/=/Users/shekhirin/Projects/mev-example/lib/openzeppelin-contracts/contracts/
    src/=/Users/shekhirin/Projects/mev-example/src/
    test/=/Users/shekhirin/Projects/mev-example/test/

If you are in a subdirectory in a Git repository, try adding `--root .`

I created an empty src folder and then it worked well:

➜  mev-example git:(curve20220521) mkdir src
➜  mev-example git:(curve20220521) forge test --fork-url $ETH_RPC_URL --fork-block-number 14811888 -vvv
[⠊] Compiling...
[⠊] installing solc version "0.8.14"
[⠆] Successfully installed solc 0.8.14
[⠘] Compiling 16 files with 0.8.14
[⠃] Solc 0.8.14 finished in 1.37s
Compiler run successful

Running 1 test for test/MEV.t.sol:MEVSimulation
[PASS] testMEV() (gas: 2043432)
Test result: ok. 1 passed; 0 failed; finished in 22.72s

[mattsse]

supportive of this, so let's just get rid of the bail!s?

[ayushm2003]

these - 1, 2?

[mattsse]

yes, I think ethers-solc can handle it if the paths don't exists