@Bastien Dumont I did not know about the native format. It does make a lot 
more sense to compare the AST than a particular format which as you have 
said is subject to change.

Cheers

On Wednesday, January 26, 2022 at 5:45:43 PM UTC+5:30 Bastien Dumont wrote:

> Alternatively, you can export to native for testing purposes. It preserves 
> the raw OOXML code added by your filter, if any, and will make your test 
> files independant of potential changes in Pandoc writers.
>
> Le Wednesday 26 January 2022 à 02:49:34AM, Nandakumar Chandrasekhar a 
> écrit :
> > Thanks for the explanation William, I now understand.
> > 
> > After further research, I found the way you suggested by converting the
> > generated files back to markdown and then doing a diff on those.
> > 
> > Thank you for confirming this methodology.
> > 
> > Cheers.
> > 
> > On Wednesday, January 26, 2022 at 3:20:10 PM UTC+5:30 William Lupton 
> wrote:
> > 
> > Just commenting on this:
> > 
> > > The two file always differ when I try: diff expected.docx sample.docx. 
> I
> > do not see why they should differ when they were created with the same
> > parameters and source file with only the name changing.
> > 
> > A docx file is a ZIP that contains many resources including a file
> > called docProps/core.xml that includes "created" and "modified" 
> properties
> > that indicate when the document was created and modified.
> > 
> > Therefore I don't think that you can assume that two docx files with
> > identical content are in fact identical.
> > 
> > Perhaps the word/document.xml files (also in the ZIP) will be identical, 
> or
> > perhaps it would be better to convert to a different format for 
> comparison
> > purposes?
> > 
> > William
> > 
> > On Wed, 26 Jan 2022 at 09:40, Nandakumar Chandrasekhar <
> > navani...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > 
> > Dear Folks,
> > 
> > I am in the process of writing a lua-filter that modifies the font of
> > font-awesome icons added to a Word/DOCX document.
> > 
> > I am finding that if I were to generate a file called expected.docx
> > from the code:
> > 
> > pandoc -f markdown -t docx --reference-doc sample-reference.docx -o
> > expected.docx sample.md
> > 
> > and then generate another docx file with a different name using the
> > same source file and reference docx as below:
> > 
> > pandoc -f markdown -t docx --reference-doc sample-reference.docx -o
> > sample.docx sample.md
> > 
> > The two file always differ when I try:
> > 
> > diff expected.docx sample.docx
> > 
> > I do not see why they should differ when they were created with the
> > same parameters and source file with only the name changing.
> > 
> > What alternatives do I have to stop making the files differ.
> > 
> > I need to write tests for my lua filter to be accepted into pandoc/
> > lua-filters.
> > 
> > Therefore, I need to make sure that the expected output and the
> > generated output are exactly the same to pass the test.
> > 
> > I hope someone can lend some insight.
> > 
> > Many thanks.
> > 
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