Run tests only if forge is available.

tests/tools/mutator/test_data/test_source_unit/README.md

@@ -1,66 +1,7 @@
-## Foundry
+# Counter
 
-**Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.**
-
-Foundry consists of:
-
--   **Forge**: Ethereum testing framework (like Truffle, Hardhat and DappTools).
--   **Cast**: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
--   **Anvil**: Local Ethereum node, akin to Ganache, Hardhat Network.
--   **Chisel**: Fast, utilitarian, and verbose solidity REPL.
-
-## Documentation
-
-https://book.getfoundry.sh/
-
-## Usage
-
-### Build
-
-```shell
-$ forge build
-```
-
-### Test
-
-```shell
-$ forge test
-```
-
-### Format
-
-```shell
-$ forge fmt
-```
-
-### Gas Snapshots
-
-```shell
-$ forge snapshot
-```
-
-### Anvil
-
-```shell
-$ anvil
-```
-
-### Deploy
-
-```shell
-$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
-```
-
-### Cast
-
-```shell
-$ cast <subcommand>
-```
-
-### Help
+Init using :
 
 ```shell
-$ forge --help
-$ anvil --help
-$ cast --help
+forge install --no-commit --no-git .
 ```

tests/tools/mutator/test_mutator.py

@@ -1,10 +1,11 @@
+import argparse
+from contextlib import contextmanager
 import os
+from pathlib import Path
+import shutil
 import subprocess
 import tempfile
-from pathlib import Path
 from unittest import mock
-import argparse
-from contextlib import contextmanager
 
 import pytest
 from slither import Slither
@@ -15,6 +16,9 @@
 
 TEST_DATA_DIR = Path(__file__).resolve().parent / "test_data"
 
+foundry_available = shutil.which("forge") is not None
+project_ready = Path(TEST_DATA_DIR, "test_source_unit/lib/forge-std").exists()
+
 
 @contextmanager
 def change_directory(new_dir):
@@ -75,6 +79,9 @@ def test_backup_source_file():
         assert Path(files_dict[file_path]).exists()
 
 
+@pytest.mark.skipif(
+    not foundry_available or not project_ready, reason="requires Foundry and project setup"
+)
 def test_get_sol_file_list():
 
     project_directory = TEST_DATA_DIR / "test_source_unit"
@@ -98,6 +105,9 @@ def test_get_sol_file_list():
     (project_directory / "test.sol").rmdir()
 
 
+@pytest.mark.skipif(
+    not foundry_available or not project_ready, reason="requires Foundry and project setup"
+)
 def test_run_test(caplog):
     with change_directory(TEST_DATA_DIR / "test_source_unit"):
         result = run_test_cmd("forge test", timeout=None, target_file=None, verbose=True)