[PATCH v3 3/7] test: skip all subtests if external dependencies are missing during init

[Dmitry Kurochkin <dmitry.kurochkin@gmail.com>]

Some tests (e.g. crypto) do a common initialization required for all
subtests.  The patch adds a check for missing external dependencies
during this initialization.  If any prerequisites are missing, all
subtests are skipped.

The check is run on the first call of test_reset_state_ function, so
no changes for the tests are needed.
---
 test/test-lib.sh |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/test/test-lib.sh b/test/test-lib.sh
index df867a5..99b9e8b 100644
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -902,10 +902,20 @@ test_emacs () {
 }
 
 test_reset_state_ () {
+	test -z "$test_init_done_" && test_init_
+
 	test_subtest_known_broken_=
 	test_subtest_missing_external_prereqs_=
 }
 
+# called once before the first subtest
+test_init_ () {
+	test_init_done_=t
+
+	# skip all tests if there were external prerequisites missing during init
+	test_check_missing_external_prereqs_ "all tests in $this_test" && test_done
+}
+
 
 find_notmuch_path ()
 {
-- 
1.7.7.3