SF patch #736962: Port tests to unittest

(Contributed by Walter Dörwald).

* Convert three test modules to unittest format.
* Expanded coverage in test_structseq.py.
* Raymond added a new test in test_sets.py

Lib/test/test_structseq.py

@@ -1,28 +1,104 @@
-from test.test_support import vereq
+import unittest
+from test import test_support
 
 import time
 
-t = time.gmtime()
-astuple = tuple(t)
-vereq(len(t), len(astuple))
-vereq(t, astuple)
+class StructSeqTest(unittest.TestCase):
 
-# Check that slicing works the same way; at one point, slicing t[i:j] with
-# 0 < i < j could produce NULLs in the result.
-for i in range(-len(t), len(t)):
-    for j in range(-len(t), len(t)):
-        vereq(t[i:j], astuple[i:j])
+    def test_tuple(self):
+        t = time.gmtime()
+        astuple = tuple(t)
+        self.assertEqual(len(t), len(astuple))
+        self.assertEqual(t, astuple)
 
-# Devious code could crash structseqs' contructors
-class C:
-    def __getitem__(self, i):
-        raise IndexError
-    def __len__(self):
-        return 9
+        # Check that slicing works the same way; at one point, slicing t[i:j] with
+        # 0 < i < j could produce NULLs in the result.
+        for i in xrange(-len(t), len(t)):
+            self.assertEqual(t[i:], astuple[i:])
+            for j in xrange(-len(t), len(t)):
+                self.assertEqual(t[i:j], astuple[i:j])
 
-try:
-    repr(time.struct_time(C()))
-except:
-    pass
+        for j in xrange(-len(t), len(t)):
+            self.assertEqual(t[:j], astuple[:j])
 
-# XXX more needed
+        self.assertRaises(IndexError, t.__getitem__, -len(t)-1)
+        self.assertRaises(IndexError, t.__getitem__, len(t))
+        for i in xrange(-len(t), len(t)-1):
+            self.assertEqual(t[i], astuple[i])
+
+    def test_repr(self):
+        t = time.gmtime()
+        repr(t)
+
+    def test_concat(self):
+        t1 = time.gmtime()
+        t2 = t1 + tuple(t1)
+        for i in xrange(len(t1)):
+            self.assertEqual(t2[i], t2[i+len(t1)])
+
+    def test_repeat(self):
+        t1 = time.gmtime()
+        t2 = 3 * t1
+        for i in xrange(len(t1)):
+            self.assertEqual(t2[i], t2[i+len(t1)])
+            self.assertEqual(t2[i], t2[i+2*len(t1)])
+
+    def test_contains(self):
+        t1 = time.gmtime()
+        for item in t1:
+            self.assert_(item in t1)
+        self.assert_(-42 not in t1)
+
+    def test_hash(self):
+        t1 = time.gmtime()
+        self.assertEqual(hash(t1), hash(tuple(t1)))
+
+    def test_cmp(self):
+        t1 = time.gmtime()
+        t2 = type(t1)(t1)
+        self.assertEqual(t1, t2)
+        self.assert_(not (t1 < t2))
+        self.assert_(t1 <= t2)
+        self.assert_(not (t1 > t2))
+        self.assert_(t1 >= t2)
+        self.assert_(not (t1 != t2))
+
+    def test_fields(self):
+        t = time.gmtime()
+        self.assertEqual(len(t), t.n_fields)
+        self.assertEqual(t.n_fields, t.n_sequence_fields+t.n_unnamed_fields)
+
+    def test_constructor(self):
+        t = time.struct_time
+
+        self.assertRaises(TypeError, t)
+        self.assertRaises(TypeError, t, None)
+        self.assertRaises(TypeError, t, "123")
+        self.assertRaises(TypeError, t, "123", dict={})
+        self.assertRaises(TypeError, t, "123456789", dict=None)
+
+        s = "123456789"
+        self.assertEqual("".join(t(s)), s)
+
+    def test_eviltuple(self):
+        class Exc(Exception):
+            pass
+
+        # Devious code could crash structseqs' contructors
+        class C:
+            def __getitem__(self, i):
+                raise Exc
+            def __len__(self):
+                return 9
+
+        self.assertRaises(Exc, time.struct_time, C())
+
+    def test_reduce(self):
+        t = time.gmtime()
+        x = t.__reduce__()
+
+def test_main():
+    test_support.run_unittest(StructSeqTest)
+
+if __name__ == "__main__":
+    test_main()