1 files changed, 134 insertions, 0 deletions
diff --git a/setuptools/tests/test_sandbox.py b/setuptools/tests/test_sandbox.py
new file mode 100644
index 00000000..99398cdb
--- /dev/null
+++ b/setuptools/tests/test_sandbox.py
@@ -0,0 +1,134 @@
+"""develop tests
+"""
+import os
+import types
+
+import pytest
+
+import pkg_resources
+import setuptools.sandbox
+
+
+class TestSandbox:
+    def test_devnull(self, tmpdir):
+        with setuptools.sandbox.DirectorySandbox(str(tmpdir)):
+            self._file_writer(os.devnull)
+
+    @staticmethod
+    def _file_writer(path):
+        def do_write():
+            with open(path, 'w') as f:
+                f.write('xxx')
+
+        return do_write
+
+    def test_setup_py_with_BOM(self):
+        """
+        It should be possible to execute a setup.py with a Byte Order Mark
+        """
+        target = pkg_resources.resource_filename(
+            __name__,
+            'script-with-bom.py')
+        namespace = types.ModuleType('namespace')
+        setuptools.sandbox._execfile(target, vars(namespace))
+        assert namespace.result == 'passed'
+
+    def test_setup_py_with_CRLF(self, tmpdir):
+        setup_py = tmpdir / 'setup.py'
+        with setup_py.open('wb') as stream:
+            stream.write(b'"degenerate script"\r\n')
+        setuptools.sandbox._execfile(str(setup_py), globals())
+
+
+class TestExceptionSaver:
+    def test_exception_trapped(self):
+        with setuptools.sandbox.ExceptionSaver():
+            raise ValueError("details")
+
+    def test_exception_resumed(self):
+        with setuptools.sandbox.ExceptionSaver() as saved_exc:
+            raise ValueError("details")
+
+        with pytest.raises(ValueError) as caught:
+            saved_exc.resume()
+
+        assert isinstance(caught.value, ValueError)
+        assert str(caught.value) == 'details'
+
+    def test_exception_reconstructed(self):
+        orig_exc = ValueError("details")
+
+        with setuptools.sandbox.ExceptionSaver() as saved_exc:
+            raise orig_exc
+
+        with pytest.raises(ValueError) as caught:
+            saved_exc.resume()
+
+        assert isinstance(caught.value, ValueError)
+        assert caught.value is not orig_exc
+
+    def test_no_exception_passes_quietly(self):
+        with setuptools.sandbox.ExceptionSaver() as saved_exc:
+            pass
+
+        saved_exc.resume()
+
+    def test_unpickleable_exception(self):
+        class CantPickleThis(Exception):
+            "This Exception is unpickleable because it's not in globals"
+            def __repr__(self):
+                return 'CantPickleThis%r' % (self.args,)
+
+        with setuptools.sandbox.ExceptionSaver() as saved_exc:
+            raise CantPickleThis('detail')
+
+        with pytest.raises(setuptools.sandbox.UnpickleableException) as caught:
+            saved_exc.resume()
+
+        assert str(caught.value) == "CantPickleThis('detail',)"
+
+    def test_unpickleable_exception_when_hiding_setuptools(self):
+        """
+        As revealed in #440, an infinite recursion can occur if an unpickleable
+        exception while setuptools is hidden. Ensure this doesn't happen.
+        """
+
+        class ExceptionUnderTest(Exception):
+            """
+            An unpickleable exception (not in globals).
+            """
+
+        with pytest.raises(setuptools.sandbox.UnpickleableException) as caught:
+            with setuptools.sandbox.save_modules():
+                setuptools.sandbox.hide_setuptools()
+                raise ExceptionUnderTest()
+
+        msg, = caught.value.args
+        assert msg == 'ExceptionUnderTest()'
+
+    def test_sandbox_violation_raised_hiding_setuptools(self, tmpdir):
+        """
+        When in a sandbox with setuptools hidden, a SandboxViolation
+        should reflect a proper exception and not be wrapped in
+        an UnpickleableException.
+        """
+
+        def write_file():
+            "Trigger a SandboxViolation by writing outside the sandbox"
+            with open('/etc/foo', 'w'):
+                pass
+
+        with pytest.raises(setuptools.sandbox.SandboxViolation) as caught:
+            with setuptools.sandbox.save_modules():
+                setuptools.sandbox.hide_setuptools()
+                with setuptools.sandbox.DirectorySandbox(str(tmpdir)):
+                    write_file()
+
+        cmd, args, kwargs = caught.value.args
+        assert cmd == 'open'
+        assert args == ('/etc/foo', 'w')
+        assert kwargs == {}
+
+        msg = str(caught.value)
+        assert 'open' in msg
+        assert "('/etc/foo', 'w')" in msg