Tests can't be run programmatically more than once

[fvictorio]

Reproduction steps:

1. Create the sample project

2. Create a script like this:

   const hre = require("hardhat");
   
   async function main() {
     await hre.run("test")
     await hre.run("test")
   }
   
   main()
     .then(() => process.exit(0))
     .catch(error => {
       console.error(error);
       process.exit(1);
     });

3. Run hh run script.js

Expected result: Tests should be run twice.

Actual result: the second run doesn't find any tests:

  Greeter
Deploying a Greeter with greeting: Hello, world!
Changing greeting from 'Hello, world!' to 'Hola, mundo!'
    ✓ Should return the new greeting once it's changed (782ms)


  1 passing (785ms)



  0 passing (0ms)

This seems like a "mocha caching something" thing.

[alcuadrado]

This seems like a "mocha caching something" thing.

It's mocha loading the test files with require, so they only get interpreted once.

[ghost]

I found same issue closed on mocha repo #2783. can be helpful.

[fvictorio]

Reopening so we can close it when this is released.

[fvictorio]

Fixed in hardhat@2.8.1.