progress: create GIT_PROGRESS_DELAY

The start_delayed_progress() method is a preferred way to show
optional progress to users as it ignores steps that take less
than two seconds. However, this makes testing unreliable as tests
expect to be very fast.

In addition, users may want to decrease or increase this time
interval depending on their preferences for terminal noise.

Create the GIT_PROGRESS_DELAY environment variable to control
the delay set during start_delayed_progress(). Set the value
in some tests to guarantee their output remains consistent.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index d42b3efe39..0824857e1f 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh
@@ -132,7 +132,7 @@ test_expect_success 'commit-graph write progress off for redirected stderr' '
 
 test_expect_success 'commit-graph write force progress on for stderr' '
 	cd "$TRASH_DIRECTORY/full" &&
-	git commit-graph write --progress 2>err &&
+	GIT_PROGRESS_DELAY=0 git commit-graph write --progress 2>err &&
 	test_file_not_empty err
 '
 
@@ -150,7 +150,7 @@ test_expect_success 'commit-graph verify progress off for redirected stderr' '
 
 test_expect_success 'commit-graph verify force progress on for stderr' '
 	cd "$TRASH_DIRECTORY/full" &&
-	git commit-graph verify --progress 2>err &&
+	GIT_PROGRESS_DELAY=0 git commit-graph verify --progress 2>err &&
 	test_file_not_empty err
 '