test/libconfig: add two tests for the config = "" case

If notmuch_database_open_with_config finds a database, but that
database is not in a legacy, non-split configuration, then it
currently incorrectly deduces the mail root and returns SUCCESS. Add
to two tests to demonstrate this bug.

diff --git a/test/T590-libconfig.sh b/test/T590-libconfig.sh
index 089b4e58916326d87081943cb943d95c490ff02b..9cc79e8cc449f7d1a991d6982a7aaf78377b8577 100755 (executable)
--- a/test/T590-libconfig.sh
+++ b/test/T590-libconfig.sh
@@ -994,4 +994,44 @@ EOF
 notmuch_dir_sanitize < OUTPUT > OUTPUT.clean
 test_expect_equal_file EXPECTED OUTPUT.clean
 
+cat <<EOF > c_body
+  notmuch_status_t st = notmuch_database_open_with_config(NULL,
+                                                         NOTMUCH_DATABASE_MODE_READ_ONLY,
+                                                         "", NULL, &db, NULL);
+  printf ("status == SUCCESS: %d\n", st == NOTMUCH_STATUS_SUCCESS);
+  if (db) {
+    const char *mail_root = NULL;
+    mail_root = notmuch_config_get (db, NOTMUCH_CONFIG_MAIL_ROOT);
+    printf ("mail_root: %s\n", mail_root ? mail_root : "(null)");
+  }
+EOF
+
+cat <<EOF> EXPECTED.common
+== stdout ==
+status == SUCCESS: 0
+db == NULL: 1
+== stderr ==
+EOF
+
+test_begin_subtest "open/error: config=empty with no mail root in db "
+old_NOTMUCH_CONFIG=${NOTMUCH_CONFIG}
+unset NOTMUCH_CONFIG
+cat c_head3 c_body c_tail3 | test_C
+export NOTMUCH_CONFIG=${old_NOTMUCH_CONFIG}
+notmuch_dir_sanitize < OUTPUT > OUTPUT.clean
+test_expect_equal_file EXPECTED.common OUTPUT.clean
+
+test_begin_subtest "open/error: config=empty with no mail root in db (xdg)"
+test_subtest_known_broken
+old_NOTMUCH_CONFIG=${NOTMUCH_CONFIG}
+unset NOTMUCH_CONFIG
+backup_database
+mkdir -p home/.local/share/notmuch
+mv mail/.notmuch home/.local/share/notmuch/default
+cat c_head3 c_body c_tail3 | test_C
+restore_database
+export NOTMUCH_CONFIG=${old_NOTMUCH_CONFIG}
+notmuch_dir_sanitize < OUTPUT > OUTPUT.clean
+test_expect_equal_file EXPECTED.common OUTPUT.clean
+
 test_done