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SCons / test / TEX / bibtex-latex-rerun.py

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#!/usr/bin/env python
#
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

"""
Verify that we re-run LaTeX after running BibTeX in response to
changes in a .bib file.

Thanks to Rob Managan for the patch that fixed this, and to Joel B. Mohler
for code clean up and packaging the test case.
"""

import TestSCons

test = TestSCons.TestSCons()

test.write(['SConstruct'], """\
PDF( 'bibtest.tex' )
""")

test.write(['bibtest.tex'], r"""
\documentclass{article}
\begin{document}
Learn about cool math in \cite{koblitz:elliptic_curves}.
\bibliographystyle{alpha}
\bibliography{sources}
\end{document}
""")

sources_bib_content = r"""
@book{koblitz:elliptic_curves,
	author    = "Neal Koblitz",
	title     = "Elliptic Curves and Modular Forms",
	year      = "%s",
	publisher = "Springer-Verlag New York Inc."
}
"""



test.write('sources.bib', sources_bib_content % '1981')

test.run()

pdf_output_1 = test.read('bibtest.pdf')



test.write('sources.bib', sources_bib_content % '1982')

test.run()

pdf_output_2 = test.read('bibtest.pdf')

# If the PDF file is the same as it was previously, then it didn't
# pick up the change from 1981 to 1982, so fail.
test.fail_test(pdf_output_1 == pdf_output_2)



# Double-check:  clean everything and rebuild from scratch, which
# should force the PDF file to be the 1982 version.

test.run(arguments = '-c')

test.run()

pdf_output_3 = test.read('bibtest.pdf')

# If the PDF file is now different than the second run, then something
# else odd has happened, so fail.  (Note that this test will be incorrect
# if the tool does something like insert a timestamp in the PDF file.)
test.fail_test(pdf_output_2 != pdf_output_3)



test.pass_test()