[gobject-introspection] tests: Update Python stanza to change directories before running tests

[Simon Feltman <sfeltman src gnome org>]

commit 8787aec7d010b74cdaa7ccdbe11f32ded55fc006
Author: Simon Feltman <sfeltman src gnome org>
Date:   Wed Dec 18 18:30:54 2013 -0800

    tests: Update Python stanza to change directories before running tests
    
    Ensure PYTHONPATH uses absolute paths for top_builddir and top_srcdir. Use
    pushd/popd before and after running tests with "python -m unittest...". This
    ensures TESTARGS can be used from within a vpath build directory.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=720713

 tests/gi-tester |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/tests/gi-tester b/tests/gi-tester
index 78a5c43..a7be690 100755
--- a/tests/gi-tester
+++ b/tests/gi-tester
@@ -38,9 +38,11 @@ case $targetname in
         PYTHONPATH=${top_builddir}:${top_srcdir} ${PYTHON} ${targetname}
         exit $?
     else
-        # Run as Python unittest module with TESTARGS concatenated to the basename of target
-        targetbasename=`basename "${targetname}" .py`
-        PYTHONPATH=${top_builddir}:${top_srcdir} ${PYTHON} -m unittest -v "${targetbasename}.${TESTARGS}"
+        # Run as Python unittest module with TESTARGS concatenated to the basename of target.
+        # Ensure we are in the directory containing the python module first.
+        export PYTHONPATH=$(readlink -f ${top_builddir}):$(readlink -f ${top_srcdir})
+        modulename=$(basename "${targetbase}" .py)
+        (cd $(dirname ${targetname}) &&  ${PYTHON} -m unittest -v "${modulename}.${TESTARGS}")
         exit $?
     fi
     ;;