tests: add a test for symbol hiding side effects

The worry here is that a binary linking with libnotmuch might lose
access to Xapian::Error symbols because libnotmuch hides them.

We are careful here to create ./fakedb/.notmuch in order to trigger a
Xapian exception, and not just a missing file check.

Thanks to jrollins and amddragon for suggestions.
(cherry picked from commit 66f37f5f6864a988f94ddb893e3a176af57f6c8e)

1 files changed, 26 insertions, 0 deletions

diff --git a/test/symbol-hiding b/test/symbol-hiding
new file mode 100755
index 0000000..bb55524
--- /dev/null
+++ b/test/symbol-hiding
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2011 David Bremner
+#
+
+# This test tests whether hiding Xapian::Error symbols in libnotmuch
+# also hides them for other users of libxapian. This is motivated by
+# the discussion in http://gcc.gnu.org/wiki/Visibility'
+
+test_description='exception symbol hiding'
+
+. ./test-lib.sh
+
+run_test(){
+    result=$(LD_LIBRARY_PATH=../../lib ./symbol-test 2>&1)
+}
+
+output="A Xapian exception occurred opening database: Couldn't stat 'fakedb/.notmuch/xapian'
+caught No chert database found at path \`./nonexistant'"
+
+g++ -o symbol-test -I../../lib ../symbol-test.cc -L../../lib -lnotmuch -lxapian
+mkdir -p fakedb/.notmuch
+test_expect_success 'running test' run_test
+test_begin_subtest 'checking output'
+test_expect_equal "$result" "$output" 
+test_done