Running DocTest on Strings

[notanotheridiot]

Hi,
I have two strings - a docstring containing doctests and a code string
containing code to be tested with those doctests. I've been trying for
a day now to run the test without concatenating the two strings,
adding:

import doctest
doctest.testmod

to the bottom, writing it all to a file and executing it using popen().

There must be some way of doing this without writing to a temporary
file, any ideas?

thanks in advance,

johannes Woolard

[Paddy]

Re: Running DocTest on Strings


notanotheridiot wrote:[color=blue]
> Hi,
> I have two strings - a docstring containing doctests and a code string
> containing code to be tested with those doctests. I've been trying for
> a day now to run the test without concatenating the two strings,
> adding:
>
> import doctest
> doctest.testmod
>
> to the bottom, writing it all to a file and executing it using popen().
>
> There must be some way of doing this without writing to a temporary
> file, any ideas?
>
> thanks in advance,
>
> johannes Woolard[/color]
Create the concatenated string then exec it?

- Pad.

[André]

Re: Running DocTest on Strings


Paddy wrote:[color=blue]
> notanotheridiot wrote:[color=green]
> > Hi,
> > I have two strings - a docstring containing doctests and a code string
> > containing code to be tested with those doctests. I've been trying for
> > a day now to run the test without concatenating the two strings,
> > adding:
> >
> > import doctest
> > doctest.testmod
> >
> > to the bottom, writing it all to a file and executing it using popen().
> >
> > There must be some way of doing this without writing to a temporary
> > file, any ideas?
> >
> > thanks in advance,
> >
> > johannes Woolard[/color]
> Create the concatenated string then exec it?[/color]

I know from experience that this approach does not work. When you do
that, the entire module from which it is run turns out to be scanned
for doctests - not only the string being executed by exec. However, I
understand that Johannes found a solution.

André
[color=blue]
>
> - Pad.[/color]

[notanotheridiot]

Re: Running DocTest on Strings


André wrote:[color=blue]
> Paddy wrote:[color=green]
> > notanotheridiot wrote:[color=darkred]
> > > Hi,
> > > I have two strings - a docstring containing doctests and a code string
> > > containing code to be tested with those doctests. I've been trying for
> > > a day now to run the test without concatenating the two strings,
> > > adding:
> > >
> > > import doctest
> > > doctest.testmod
> > >
> > > to the bottom, writing it all to a file and executing it using popen().
> > >
> > > There must be some way of doing this without writing to a temporary
> > > file, any ideas?
> > >
> > > thanks in advance,
> > >
> > > johannes Woolard[/color]
> > Create the concatenated string then exec it?[/color]
>
> I know from experience that this approach does not work. When you do
> that, the entire module from which it is run turns out to be scanned
> for doctests - not only the string being executed by exec. However, I
> understand that Johannes found a solution.
>
> André
>[color=green]
> >
> > - Pad.[/color][/color]

Got it, I've blogged about it here:

http://pytute.blogspot.com/2006/06/say-no-to-temporary-files.html

Basically the trick is to pass the docstring ino the exec environment
as a variable and use the advanced doctest api to get a doctest.

Johannes