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1 files changed, 59 insertions, 0 deletions

diff --git a/src/python/stdlib/test/test_unary.py b/src/python/stdlib/test/test_unary.py
new file mode 100644
index 0000000..598fca8
--- /dev/null
+++ b/src/python/stdlib/test/test_unary.py
@@ -0,0 +1,59 @@
+"""Test compiler changes for unary ops (+, -, ~) introduced in Python 2.2"""
+
+import unittest
+from test.test_support import run_unittest, have_unicode
+
+class UnaryOpTestCase(unittest.TestCase):
+
+    def test_negative(self):
+        self.assertTrue(-2 == 0 - 2)
+        self.assertTrue(-0 == 0)
+        self.assertTrue(--2 == 2)
+        self.assertTrue(-2L == 0 - 2L)
+        self.assertTrue(-2.0 == 0 - 2.0)
+        self.assertTrue(-2j == 0 - 2j)
+
+    def test_positive(self):
+        self.assertTrue(+2 == 2)
+        self.assertTrue(+0 == 0)
+        self.assertTrue(++2 == 2)
+        self.assertTrue(+2L == 2L)
+        self.assertTrue(+2.0 == 2.0)
+        self.assertTrue(+2j == 2j)
+
+    def test_invert(self):
+        self.assertTrue(-2 == 0 - 2)
+        self.assertTrue(-0 == 0)
+        self.assertTrue(--2 == 2)
+        self.assertTrue(-2L == 0 - 2L)
+
+    def test_no_overflow(self):
+        nines = "9" * 32
+        self.assertTrue(eval("+" + nines) == eval("+" + nines + "L"))
+        self.assertTrue(eval("-" + nines) == eval("-" + nines + "L"))
+        self.assertTrue(eval("~" + nines) == eval("~" + nines + "L"))
+
+    def test_negation_of_exponentiation(self):
+        # Make sure '**' does the right thing; these form a
+        # regression test for SourceForge bug #456756.
+        self.assertEqual(-2 ** 3, -8)
+        self.assertEqual((-2) ** 3, -8)
+        self.assertEqual(-2 ** 4, -16)
+        self.assertEqual((-2) ** 4, 16)
+
+    def test_bad_types(self):
+        for op in '+', '-', '~':
+            self.assertRaises(TypeError, eval, op + "'a'")
+            if have_unicode:
+                self.assertRaises(TypeError, eval, op + "u'a'")
+
+        self.assertRaises(TypeError, eval, "~2j")
+        self.assertRaises(TypeError, eval, "~2.0")
+
+
+def test_main():
+    run_unittest(UnaryOpTestCase)
+
+
+if __name__ == "__main__":
+    test_main()