diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py
index cc21aa7..2352ef1 100644
--- a/Lib/test/test_complex.py
+++ b/Lib/test/test_complex.py
@@ -220,6 +220,7 @@
         self.assertEqual(complex(NS(1+10j)), 1+10j)
         self.assertRaises(TypeError, complex, OS(None))
         self.assertRaises(TypeError, complex, NS(None))
+        self.assertRaises(TypeError, complex, {})
 
         self.assertAlmostEqual(complex("1+10j"), 1+10j)
         self.assertAlmostEqual(complex(10), 10+0j)
@@ -325,6 +326,8 @@
 
         # check that complex accepts long unicode strings
         self.assertEqual(type(complex("1"*500)), complex)
+        # check whitespace processing
+        self.assertEqual(complex('\N{EM SPACE}(\N{EN SPACE}1+1j ) '), 1+1j)
 
         class EvilExc(Exception):
             pass
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index 0072133..9bcd63d 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -43,14 +43,30 @@
         self.assertRaises(ValueError, float, "+.inf")
         self.assertRaises(ValueError, float, ".")
         self.assertRaises(ValueError, float, "-.")
+        self.assertRaises(ValueError, float, b"-")
+        self.assertRaises(TypeError, float, {})
+        # Lone surrogate
+        self.assertRaises(UnicodeEncodeError, float, '\uD8F0')
         # check that we don't accept alternate exponent markers
         self.assertRaises(ValueError, float, "-1.7d29")
         self.assertRaises(ValueError, float, "3D-14")
-        self.assertEqual(float(b"  \u0663.\u0661\u0664  ".decode('raw-unicode-escape')), 3.14)
+        self.assertEqual(float("  \u0663.\u0661\u0664  "), 3.14)
+        self.assertEqual(float("\N{EM SPACE}3.14\N{EN SPACE}"), 3.14)
         # extra long strings should not be a problem
         float(b'.' + b'1'*1000)
         float('.' + '1'*1000)
 
+    def test_error_message(self):
+        testlist = ('\xbd', '123\xbd', '  123 456  ')
+        for s in testlist:
+            try:
+                float(s)
+            except ValueError as e:
+                self.assertIn(s.strip(), e.args[0])
+            else:
+                self.fail("Expected int(%r) to raise a ValueError", s)
+
+
     @support.run_with_locale('LC_NUMERIC', 'fr_FR', 'de_DE')
     def test_float_with_comma(self):
         # set locale to something that doesn't use '.' for the decimal point
diff --git a/Lib/test/test_int.py b/Lib/test/test_int.py
index 86c4dd7..437e323 100644
--- a/Lib/test/test_int.py
+++ b/Lib/test/test_int.py
@@ -20,7 +20,8 @@
         ('  1\02  ', ValueError),
         ('', ValueError),
         (' ', ValueError),
-        ('  \t\t  ', ValueError)
+        ('  \t\t  ', ValueError),
+        ("\u0200", ValueError)
 ]
 
 class IntTestCases(unittest.TestCase):
@@ -35,6 +36,8 @@
         self.assertEqual(int(3.5), 3)
         self.assertEqual(int(-3.5), -3)
         self.assertEqual(int("-3"), -3)
+        self.assertEqual(int(" -3 "), -3)
+        self.assertEqual(int("\N{EM SPACE}-3\N{EN SPACE}"), -3)
         # Different base:
         self.assertEqual(int("10",16), 16)
         # Test conversion from strings and various anomalies
@@ -302,6 +305,16 @@
                     self.fail("Failed to raise TypeError with %s" %
                               ((base, trunc_result_base),))
 
+    def test_error_message(self):
+        testlist = ('\xbd', '123\xbd', '  123 456  ')
+        for s in testlist:
+            try:
+                int(s)
+            except ValueError as e:
+                self.assertIn(s.strip(), e.args[0])
+            else:
+                self.fail("Expected int(%r) to raise a ValueError", s)
+
 def test_main():
     run_unittest(IntTestCases)
 
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index c5a0f80..2de9e7f 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1168,8 +1168,13 @@
         # Error handling (wrong arguments)
         self.assertRaises(TypeError, "hello".encode, 42, 42, 42)
 
-        # Error handling (PyUnicode_EncodeDecimal())
-        self.assertRaises(UnicodeError, int, "\u0200")
+        # Error handling (lone surrogate in PyUnicode_TransformDecimalToASCII())
+        self.assertRaises(UnicodeError, int, "\ud800")
+        self.assertRaises(UnicodeError, int, "\udf00")
+        self.assertRaises(UnicodeError, float, "\ud800")
+        self.assertRaises(UnicodeError, float, "\udf00")
+        self.assertRaises(UnicodeError, complex, "\ud800")
+        self.assertRaises(UnicodeError, complex, "\udf00")
 
     def test_codecs(self):
         # Encoding