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, 17 insertions, 0 deletions

diff --git a/test/symbol-test.cc b/test/symbol-test.cc
new file mode 100644
index 00000000..1de06eae
--- /dev/null
+++ b/test/symbol-test.cc
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <xapian.h>
+#include <notmuch.h>
+main (int argc, char **argv){
+
+    notmuch_database_t *notmuch
+      = notmuch_database_open ("fakedb",
+				     NOTMUCH_DATABASE_MODE_READ_ONLY);
+
+  try{
+    (void)new Xapian::WritableDatabase ("./nonexistant",					Xapian::DB_OPEN);
+  } catch (const Xapian::Error &error) {
+    printf("caught %s\n",error.get_msg().c_str());
+    return 0;
+  }
+  return 1;
+}