diff --git a/src/ersilia_pack/parsers/install_parser.py b/src/ersilia_pack/parsers/install_parser.py
index 7fe374b..11bfcf6 100644
--- a/src/ersilia_pack/parsers/install_parser.py
+++ b/src/ersilia_pack/parsers/install_parser.py
@@ -2,6 +2,7 @@
 import re
 import textwrap
 
+from ..utils import eval_conda_prefix
 
 class InstallParser:
     def __init__(self, file_name, conda_env_name=None):
@@ -15,13 +16,8 @@ def _get_python_version(self):
     def _get_commands(self):
         raise NotImplementedError("Implement this in subclass")
     
-    @staticmethod
-    def _eval_conda_prefix():
-        # This returns an empty string if conda is not discoverable
-        return os.popen("conda info --base").read().strip()
-    
     def get_python_exe(self):
-        conda_prefix = self._eval_conda_prefix()
+        conda_prefix = eval_conda_prefix()
         if not conda_prefix:
             return "python"
         if self.conda_env_name is None:
@@ -79,7 +75,7 @@ def _convert_commands_to_bash_script(self):
         lines = []
         commands = self._get_commands()
         has_conda = self._has_conda(commands)
-        conda_prefix = self._eval_conda_prefix()
+        conda_prefix = eval_conda_prefix()
         python_exe = self.get_python_exe()
         for command in commands:
             if isinstance(command, list):
diff --git a/src/ersilia_pack/utils.py b/src/ersilia_pack/utils.py
index c35e2ff..c4a3da2 100644
--- a/src/ersilia_pack/utils.py
+++ b/src/ersilia_pack/utils.py
@@ -1,5 +1,6 @@
-import socket
 import logging
+import os
+import socket
 
 def find_free_port(host='localhost'):
     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@@ -14,4 +15,8 @@ def get_logger():
     logger = logging.getLogger(__name__)
     return logger
 
+def eval_conda_prefix():
+    # This returns an empty string if conda is not discoverable
+    return os.popen("conda info --base").read().strip()
+
 logger = get_logger()
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..e05def9
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,7 @@
+from unittest.mock import patch
+import pytest
+
+@pytest.fixture(scope="module")
+def mock_conda():
+    with patch("src.ersilia_pack.parsers.install_parser.eval_conda_prefix", return_value=""):
+        yield
\ No newline at end of file
diff --git a/tests/test_dockerfile_install_parser.py b/tests/test_dockerfile_install_parser.py
index 862376b..279c5c8 100644
--- a/tests/test_dockerfile_install_parser.py
+++ b/tests/test_dockerfile_install_parser.py
@@ -6,7 +6,7 @@
 class TestDockerfileInstallParser:
 
     @patch("src.ersilia_pack.parsers.dockerfile_install_parser.FILE_TYPE", "simple_dockerfile.txt")
-    def test_simple_dockerfile(self):
+    def test_simple_dockerfile(self, mock_conda):
         parser = DockerfileInstallParser(file_dir="tests/data")
         assert parser._get_python_version() == "3.11"
 
@@ -22,7 +22,7 @@ def test_simple_dockerfile(self):
         assert install_script == expected_script
 
     @patch("src.ersilia_pack.parsers.dockerfile_install_parser.FILE_TYPE", "complex_dockerfile.txt")
-    def test_complex_dockerfile(self):
+    def test_complex_dockerfile(self, mock_conda):
         parser = DockerfileInstallParser(file_dir="tests/data")
         assert parser._get_python_version() == "3.9"
 
@@ -39,7 +39,7 @@ def test_complex_dockerfile(self):
         assert install_script == expected_script
 
     @patch("src.ersilia_pack.parsers.dockerfile_install_parser.FILE_TYPE", "invalid_dockerfile.txt")
-    def test_invalid_dockerfile(self):
+    def test_invalid_dockerfile(self, mock_conda):
         parser = DockerfileInstallParser(file_dir="tests/data")
         with pytest.raises(ValueError) as e:
             parser._convert_commands_to_bash_script()
diff --git a/tests/test_yaml_install_parser.py b/tests/test_yaml_install_parser.py
index 259bb74..f18eb69 100644
--- a/tests/test_yaml_install_parser.py
+++ b/tests/test_yaml_install_parser.py
@@ -7,7 +7,7 @@
 class TestYamlInstallParser:
 
     @patch("src.ersilia_pack.parsers.yaml_install_parser.FILE_TYPE", "simple_install.yml")
-    def test_simple_install_yaml(self):
+    def test_simple_install_yaml(self, mock_conda):
         parser = YAMLInstallParser(file_dir="tests/data")
         assert parser._get_python_version() == "3.10"
 
@@ -23,7 +23,7 @@ def test_simple_install_yaml(self):
         assert install_script == expected_script
 
     @patch("src.ersilia_pack.parsers.yaml_install_parser.FILE_TYPE", "complex_install.yml")
-    def test_complex_install_yaml(self):
+    def test_complex_install_yaml(self, mock_conda):
         parser = YAMLInstallParser(file_dir="tests/data")
         assert parser._get_python_version() == "3.10"
 
@@ -39,9 +39,8 @@ def test_complex_install_yaml(self):
             expected_script = file.read()
         assert install_script == expected_script
 
-
     @patch("src.ersilia_pack.parsers.yaml_install_parser.FILE_TYPE", "invalid_install.yml")
-    def test_invalid_install_yaml(self):
+    def test_invalid_install_yaml(self, mock_conda):
         with pytest.raises(ValueError):
             parser = YAMLInstallParser(file_dir="tests/data")
             parser._convert_commands_to_bash_script()
\ No newline at end of file