[PATCH v6 02/12] preload-index: add override to enable testing preload-index

[Ben Peart]

Preload index doesn't run unless it has a minimum number of 1000 files.
To enable running tests with fewer files, add an environment variable
(GIT_FORCE_PRELOAD_TEST) which will override that minimum and set it to 2.

Signed-off-by: Ben Peart <benpe...@microsoft.com>
---
 preload-index.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/preload-index.c b/preload-index.c
index 70a4c80878..75564c497a 100644
--- a/preload-index.c
+++ b/preload-index.c
@@ -79,6 +79,8 @@ static void preload_index(struct index_state *index,
                return;
 
        threads = index->cache_nr / THREAD_COST;
+       if ((index->cache_nr > 1) && (threads < 2) && 
getenv("GIT_FORCE_PRELOAD_TEST"))
+               threads = 2;
        if (threads < 2)
                return;
        if (threads > MAX_PARALLEL)
-- 
2.14.1.548.ge54b1befee.dirty