Issue 13 in backlinq: Test that LINQ operators consume a source once only

[codesite...@google.com]

Issue 13: Test that LINQ operators consume a source once only
http://code.google.com/p/backlinq/issues/detail?id=13

New issue report by azizatif:
Unit tests need to ensure that all LINQ operators do not consume a source
more than once. In other words, given a source of type IEnumerable<T>, the
operator should never call GetEnumerator more than once. For example, the
following implementation of Average would be wrong:

public static double Average (this IEnumerable<int> source)
{
return (double) source.Sum() / source.Count();
}

The reliance on Sum and Count would cause the source to be iterate twice.
The rationale to ensure this is that once cannot assume that the source
sequence can be rewound (e.g. the source data is directly coming from a
serial device).

Issue attributes:
Status: New
Owner: ----
CC: dominik....@skybow.com
Labels: Type-Task Priority-Medium Component-Tests

--
You received this message because you are listed in the owner
or CC fields of this issue, or because you starred this issue.
You may adjust your issue notification preferences at:
http://code.google.com/hosting/settings

[codesite...@google.com]

Issue 13: Test that LINQ operators consume a source once only
http://code.google.com/p/backlinq/issues/detail?id=13

Comment #1 by azizatif:
(No comment was entered for this change.)

Issue attribute updates:
Status: Started
Owner: dominik....@skybow.com
Cc: -dominik....@skybow.com

[codesite...@google.com]

Issue 13: Test that LINQ operators consume a source once only
http://code.google.com/p/backlinq/issues/detail?id=13

Comment #2 by azizatif:
Started in r117 and r118.

[codesite...@google.com]

Issue 13: Test that LINQ operators consume a source once only
http://code.google.com/p/backlinq/issues/detail?id=13

Comment #3 by dominik....@skybow.com:
Fixed in r128.

Issue attribute updates:
Status: Fixed