[RFC PATCH 4/4] Add a performance test for git-grep

[Thomas Rast <trast@student.ethz.ch>]

The only catch is that we don't really know what our repo contains, so
we have to ignore any possible "not found" status from git-grep.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
---
 t/perf/p7810-grep.sh |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)
 create mode 100755 t/perf/p7810-grep.sh

diff --git a/t/perf/p7810-grep.sh b/t/perf/p7810-grep.sh
new file mode 100755
index 0000000..9f4ade6
--- /dev/null
+++ b/t/perf/p7810-grep.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+
+test_description="git-grep performance in various modes"
+
+. ./perf-lib.sh
+
+test_perf_large_repo
+test_checkout_worktree
+
+test_perf 'grep worktree, cheap regex' '
+	git grep some_nonexistent_string || :
+'
+test_perf 'grep worktree, expensive regex' '
+	git grep "^.* *some_nonexistent_string$" || :
+'
+test_perf 'grep --cached, cheap regex' '
+	git grep --cached some_nonexistent_string || :
+'
+test_perf 'grep --cached, expensive regex' '
+	git grep --cached "^.* *some_nonexistent_string$" || :
+'
+
+test_done
-- 
1.7.8.304.ge42e4