This could explain some of the problems I had to get the test suite running.
I would have never guessed that LD_LIBRARY_PATH gets overwritten by the test
suite.

On 16-05-26, Tomi Ollila wrote:
> Previously LD_LIBRARY_PATH was exported (and environment changed)
> in the middle of test case execution, when a function setting it
> was called.
> 
> Previously the old contents of LD_LIBRARY_PATH was lost (if any)
> when it was re-set and exported. In some systems the old contents of
> LD_LIBRARY_PATH was needed to e.g. locate suitable gmime library.
> ---
> 
> This series (of 2 patches) has exactly same payload as the previous
> version:
> 	id:1460738800-9021-1-git-send-email-tomi.ollila@iki.fi
> 
> commit messages are updated to be accurate (? :) this time.
> 
>  test/T360-symbol-hiding.sh | 5 ++---
>  test/test-lib-common.sh    | 5 +++++
>  test/test-lib.sh           | 3 ---
>  3 files changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/test/T360-symbol-hiding.sh b/test/T360-symbol-hiding.sh
> index 3f18ec1a34fc..9c10e8eda07f 100755
> --- a/test/T360-symbol-hiding.sh
> +++ b/test/T360-symbol-hiding.sh
> @@ -13,9 +13,8 @@ test_description='exception symbol hiding'
>  
>  test_begin_subtest 'running test' run_test
>  mkdir -p ${PWD}/fakedb/.notmuch
> -( LD_LIBRARY_PATH="$TEST_DIRECTORY/../lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" \
> -		 $TEST_DIRECTORY/symbol-test ${PWD}/fakedb ${PWD}/nonexistent \
> -		 2>&1 | notmuch_dir_sanitize | sed -e "s,\`,\',g" -e "s,${NOTMUCH_DEFAULT_XAPIAN_BACKEND},backend,g") > OUTPUT
> +$TEST_DIRECTORY/symbol-test ${PWD}/fakedb ${PWD}/nonexistent 2>&1 \
> +	| notmuch_dir_sanitize | sed -e "s,\`,\',g" -e "s,${NOTMUCH_DEFAULT_XAPIAN_BACKEND},backend,g" > OUTPUT
>  
>  cat <<EOF > EXPECTED
>  A Xapian exception occurred opening database: Couldn't stat 'CWD/fakedb/.notmuch/xapian'
> diff --git a/test/test-lib-common.sh b/test/test-lib-common.sh
> index ba4a8e112084..026440ccc057 100644
> --- a/test/test-lib-common.sh
> +++ b/test/test-lib-common.sh
> @@ -52,6 +52,11 @@ restore_database () {
>  TEST_DIRECTORY=$(pwd -P)
>  notmuch_path=`find_notmuch_path "$TEST_DIRECTORY"`
>  
> +# Prepend $TEST_DIRECTORY/../lib to LD_LIBRARY_PATH, to make tests work
> +# on systems where ../notmuch depends on LD_LIBRARY_PATH.
> +LD_LIBRARY_PATH=${TEST_DIRECTORY%/*}/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
> +export LD_LIBRARY_PATH
> +
>  # configure output
>  . $notmuch_path/sh.config || exit 1
>  
> diff --git a/test/test-lib.sh b/test/test-lib.sh
> index 62e123d65aba..a7e6397c324e 100644
> --- a/test/test-lib.sh
> +++ b/test/test-lib.sh
> @@ -1171,7 +1171,6 @@ test_emacs () {
>  }
>  
>  test_python() {
> -	export LD_LIBRARY_PATH=$TEST_DIRECTORY/../lib
>  	export PYTHONPATH=$TEST_DIRECTORY/../bindings/python
>  
>  	(echo "import sys; _orig_stdout=sys.stdout; sys.stdout=open('OUTPUT', 'w')"; cat) \
> @@ -1179,7 +1178,6 @@ test_python() {
>  }
>  
>  test_ruby() {
> -    export LD_LIBRARY_PATH=$TEST_DIRECTORY/../lib
>      MAIL_DIR=$MAIL_DIR ruby -I $TEST_DIRECTORY/../bindings/ruby> OUTPUT
>  }
>  
> @@ -1187,7 +1185,6 @@ test_C () {
>      exec_file="test${test_count}"
>      test_file="${exec_file}.c"
>      cat > ${test_file}
> -    export LD_LIBRARY_PATH=${TEST_DIRECTORY}/../lib
>      ${TEST_CC} ${TEST_CFLAGS} -I${TEST_DIRECTORY}/../lib -o ${exec_file} ${test_file} -L${TEST_DIRECTORY}/../lib/ -lnotmuch -ltalloc
>      echo "== stdout ==" > OUTPUT.stdout
>      echo "== stderr ==" > OUTPUT.stderr
> -- 
> 2.8.2
> 
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