Moved more problems to Python.

python/lib_misc_tests.py

@@ -5,12 +5,20 @@ try:
     from .lib_misc import get_digits_reversed
     from .lib_misc import get_item_counts
     from .lib_misc import product
+    from .lib_misc import triangle_numbers
+    from .lib_misc import even, odd
+    from .lib_misc import collatz_sequence
+    from .lib_misc import collatz_sequence_length
 except ModuleNotFoundError:
     from lib_misc import is_palindrome_integer
     from lib_misc import is_palindrome_string
     from lib_misc import get_digits_reversed
     from lib_misc import get_item_counts
     from lib_misc import product
+    from lib_misc import triangle_numbers
+    from lib_misc import even, odd
+    from lib_misc import collatz_sequence
+    from lib_misc import collatz_sequence_length
 
 
 class TestPrimeMethods(unittest.TestCase):
@@ -42,6 +50,26 @@ class TestPrimeMethods(unittest.TestCase):
         self.assertEqual(product([2, 4, 8]), 64)
         self.assertEqual(product([]), 1)
 
+    def test_triangle_numbers(self):
+        f = triangle_numbers()
+        self.assertEqual(next(f), 1)
+        self.assertEqual(next(f), 3)
+        self.assertEqual(next(f), 6)
+        self.assertEqual(next(f), 10)
+        self.assertEqual(next(f), 15)
+        self.assertEqual(next(f), 21)
+
+    def test_even_odd(self):
+        self.assertTrue(odd(3))
+        self.assertTrue(even(4))
+        self.assertFalse(even(3))
+        self.assertFalse(odd(4))
+
+    def test_collatz(self):
+        self.assertEqual(collatz_sequence(13),
+                         [13, 40, 20, 10, 5, 16, 8, 4, 2, 1])
+        self.assertEqual(collatz_sequence_length(13), 10)
+
 
 if __name__ == '__main__':
     unittest.main()