Make tempurl subcommand insist on whole number seconds

Previously the tempurl subcommand would dump a traceback
due to a TypeError if the seconds option was not an int
value. With this patch it will now return the same
error message as if the seconds option were negative or not
a number.

Also changes the error message to state that the seconds
option should be a "whole number" rather than a "positive
integer", since 0 is a valid value.

Change-Id: Ie940d470f2be8006aa8eb7fe242f092457aeae21
Closes-Bug: #1621817

swiftclient/utils.py

@@ -80,17 +80,19 @@ def generate_temp_url(path, seconds, key, method, absolute=False):
     :param absolute: if True then the seconds parameter is interpreted as an
         absolute Unix time, otherwise seconds is interpreted as a relative time
         offset from current time.
-    :raises: ValueError if seconds is not a positive integer or path is not to
+    :raises: ValueError if seconds is not a whole number or path is not to
         an object.
-    :raises: TypeError if seconds is not an integer
     :return: the path portion of a temporary URL
     """
     try:
+        seconds = float(seconds)
+        if not seconds.is_integer():
+            raise ValueError()
         seconds = int(seconds)
+        if seconds < 0:
+            raise ValueError()
     except ValueError:
-        raise TypeError('seconds must be an integer')
+        raise ValueError('seconds must be a whole number')
-    if seconds < 0:
-        raise ValueError('seconds must be a positive integer')
 
     if isinstance(path, six.binary_type):
         try:

tests/unit/test_utils.py

@@ -170,15 +170,30 @@ class TestTempURL(unittest.TestCase):
         self.assertEqual(url, expected_url)
 
     def test_generate_temp_url_bad_seconds(self):
-        with self.assertRaises(TypeError) as exc_manager:
+        with self.assertRaises(ValueError) as exc_manager:
             u.generate_temp_url(self.url, 'not_an_int', self.key, self.method)
         self.assertEqual(exc_manager.exception.args[0],
-                         'seconds must be an integer')
+                         'seconds must be a whole number')
 
         with self.assertRaises(ValueError) as exc_manager:
             u.generate_temp_url(self.url, -1, self.key, self.method)
         self.assertEqual(exc_manager.exception.args[0],
-                         'seconds must be a positive integer')
+                         'seconds must be a whole number')
+
+        with self.assertRaises(ValueError) as exc_manager:
+            u.generate_temp_url(self.url, 1.1, self.key, self.method)
+        self.assertEqual(exc_manager.exception.args[0],
+                         'seconds must be a whole number')
+
+        with self.assertRaises(ValueError) as exc_manager:
+            u.generate_temp_url(self.url, '-1', self.key, self.method)
+        self.assertEqual(exc_manager.exception.args[0],
+                         'seconds must be a whole number')
+
+        with self.assertRaises(ValueError) as exc_manager:
+            u.generate_temp_url(self.url, '1.1', self.key, self.method)
+        self.assertEqual(exc_manager.exception.args[0],
+                         'seconds must be a whole number')
 
     def test_generate_temp_url_bad_path(self):
         with self.assertRaises(ValueError) as exc_manager: