Can't create fakes of abstract contracts after upgrading to hardhat-ethers v2.1.1

[kkirka]

Describe the bug
After upgrading hardhat-ethers to 2.1.1, I can't create fake contracts based on abstract contracts or interfaces.

Smock calls hardhat.ethers.getContractAt(contractName, "0x00…000"); to get an interface of a contract:

smock/src/factories/ethers-interface.ts

Line 50 in 91a7aad

return (await (hre as any).ethers.getContractAt(contractNameOrFullyQualifiedName, ethers.constants.AddressZero)).interface;

However, starting from @nomiclabs/hardhat-ethers v2.1.1 getContractAt throws an error if the on-chain code at the address is "0x".

Reproduction steps
@nomiclabs/hardhat-ethers@^2.1.1

contracts/Foo.sol

/* ... */
interface Foo {
  function foo() external returns (uint);
} 

tests/bar.ts

/* ... */
const foo = await smock.fake<Foo>("Foo");
/* ... */

Expected behavior
No error

Actual behavior

Error: unable to generate smock spec from contract name.
0x0000000000000000000000000000000000000000 is not a contract account.

System Specs:

• OS: any
• Package Version (or commit hash): 2.2.0

[kkirka]

The related hardhat PR: NomicFoundation/hardhat#2916

[opticlab]

It looks like this issue have been fixed on their end.

NomicFoundation/hardhat#3301