diff --git a/tests/__init__.py b/tests/__init__.py
index 5b996e8..7c1b4ff 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -27,7 +27,7 @@ from contextlib import contextmanager
 import py.path
 import requests
 import six
-from mock import patch
+from unittest.mock import patch
 
 from skbuild.compat import which  # noqa: F401
 from skbuild.platform_specifics import get_platform
diff --git a/tests/samples/cython-flags/setup.cfg b/tests/samples/cython-flags/setup.cfg
new file mode 100644
index 0000000..ad6ecbd
--- /dev/null
+++ b/tests/samples/cython-flags/setup.cfg
@@ -0,0 +1,5 @@
+[develop]
+prefix=/tmp/fakepythonroot/usr/
+
+[install]
+prefix=/tmp/fakepythonroot/usr/
diff --git a/tests/samples/hello-cpp/setup.cfg b/tests/samples/hello-cpp/setup.cfg
new file mode 100644
index 0000000..ad6ecbd
--- /dev/null
+++ b/tests/samples/hello-cpp/setup.cfg
@@ -0,0 +1,5 @@
+[develop]
+prefix=/tmp/fakepythonroot/usr/
+
+[install]
+prefix=/tmp/fakepythonroot/usr/
diff --git a/tests/samples/issue-274-support-default-package-dir/setup.cfg b/tests/samples/issue-274-support-default-package-dir/setup.cfg
new file mode 100644
index 0000000..ad6ecbd
--- /dev/null
+++ b/tests/samples/issue-274-support-default-package-dir/setup.cfg
@@ -0,0 +1,5 @@
+[develop]
+prefix=/tmp/fakepythonroot/usr/
+
+[install]
+prefix=/tmp/fakepythonroot/usr/
diff --git a/tests/samples/issue-274-support-one-package-without-package-dir/setup.cfg b/tests/samples/issue-274-support-one-package-without-package-dir/setup.cfg
new file mode 100644
index 0000000..ad6ecbd
--- /dev/null
+++ b/tests/samples/issue-274-support-one-package-without-package-dir/setup.cfg
@@ -0,0 +1,5 @@
+[develop]
+prefix=/tmp/fakepythonroot/usr/
+
+[install]
+prefix=/tmp/fakepythonroot/usr/
diff --git a/tests/samples/issue-334-configure-cmakelist-non-cp1252-encoding/setup.cfg b/tests/samples/issue-334-configure-cmakelist-non-cp1252-encoding/setup.cfg
new file mode 100644
index 0000000..ad6ecbd
--- /dev/null
+++ b/tests/samples/issue-334-configure-cmakelist-non-cp1252-encoding/setup.cfg
@@ -0,0 +1,5 @@
+[develop]
+prefix=/tmp/fakepythonroot/usr/
+
+[install]
+prefix=/tmp/fakepythonroot/usr/
diff --git a/tests/test_hello_cpp.py b/tests/test_hello_cpp.py
index e9a7cd5..c02194b 100644
--- a/tests/test_hello_cpp.py
+++ b/tests/test_hello_cpp.py
@@ -60,6 +60,7 @@ def test_hello_sdist():
         "hello-1.2.3/hello/__init__.py",
         "hello-1.2.3/hello/__main__.py",
         "hello-1.2.3/setup.py",
+        "hello-1.2.3/setup.cfg",
     ]
 
     sdist_archive = "dist/hello-1.2.3.zip"
diff --git a/tests/test_setup.py b/tests/test_setup.py
index c25de36..8c96dd9 100644
--- a/tests/test_setup.py
+++ b/tests/test_setup.py
@@ -15,7 +15,7 @@ from distutils.core import Distribution as distutils_Distribution
 
 import py.path
 import pytest
-from mock import patch
+from unittest.mock import patch
 from setuptools import Distribution as setuptool_Distribution
 
 from skbuild import setup as skbuild_setup