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

"""Verify that we re-run LaTeX after changing a nested \import. This
checks that recursive implicit dependencies are found correctly.

This is a separate test from the
recursive_scanner_dependencies_input.py test because \input and
\include are handled specially by the PDF builder, whereas \import
dependencies are found only by the scanner.

"""

import os
import TestSCons

test = TestSCons.TestSCons()

pdflatex = test.where_is('pdflatex')

if not pdflatex:
    test.skip_test("Could not find pdflatex; skipping test(s).\n")

latex_import = os.system('kpsewhich import.sty')
if latex_import != 0:
    test.skip_test("import.sty not installed; skipping test(s).\n")

test.subdir('subdir')
test.subdir('subdir/subdir2')

test.write(['SConstruct'], """\
env = Environment(tools=['pdftex', 'tex'])
env.PDF('master.tex')
""")

test.write(['master.tex'], r"""
\documentclass{article}
\usepackage{import}
\begin{document}
\subinputfrom{subdir/}{sub1}
\end{document}
""")

test.write(['subdir', 'sub1.tex'], r"""
\subinputfrom{subdir2/}{sub2}
""")

test.write(['subdir', 'subdir2', 'sub2.tex'], r"""
Sub-document 2 content
""")

test.run()

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

# Change sub2.tex, see if master.pdf is changed
test.write(['subdir', 'subdir2', 'sub2.tex'], r"""
Sub-document 2 content -- updated
""")

test.run()

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

# If the PDF file is the same as it was previously, then it didn't
# pick up the change in sub2.tex, 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('master.pdf')

# If the PDF file is now different than the second run, modulo the
# creation timestamp and the ID and some other PDF garp, then something
# else odd has happened, so fail.

pdf_output_2 = test.normalize_pdf(pdf_output_2)
pdf_output_3 = test.normalize_pdf(pdf_output_3)

if pdf_output_2 != pdf_output_3:
    import sys
    test.write('master.normalized.2.pdf', pdf_output_2)
    test.write('master.normalized.3.pdf', pdf_output_3)
    sys.stdout.write("***** 2 and 3 are different!\n")
    sys.stdout.write(test.diff_substr(pdf_output_2, pdf_output_3, 80, 80)
                     + '\n')
    sys.stdout.write("Output from run 2:\n")
    sys.stdout.write(test.stdout(-2) + '\n')
    sys.stdout.write("Output from run 3:\n")
    sys.stdout.write(test.stdout() + '\n')
    sys.stdout.flush()
    test.fail_test()

test.pass_test()

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