t1700: test shared index file expiration

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t1700-split-index.sh

@@ -310,4 +310,48 @@ test_expect_success 'check splitIndex.maxPercentChange set to 0' '
 	test_cmp expect actual
 '
 
+test_expect_success 'shared index files expire after 2 weeks by default' '
+	: >ten &&
+	git update-index --add ten &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 1 &&
+	just_under_2_weeks_ago=$((5-14*86400)) &&
+	test-chmtime =$just_under_2_weeks_ago .git/sharedindex.* &&
+	: >eleven &&
+	git update-index --add eleven &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 1 &&
+	just_over_2_weeks_ago=$((-1-14*86400)) &&
+	test-chmtime =$just_over_2_weeks_ago .git/sharedindex.* &&
+	: >twelve &&
+	git update-index --add twelve &&
+	test $(ls .git/sharedindex.* | wc -l) = 1
+'
+
+test_expect_success 'check splitIndex.sharedIndexExpire set to 16 days' '
+	git config splitIndex.sharedIndexExpire "16.days.ago" &&
+	test-chmtime =$just_over_2_weeks_ago .git/sharedindex.* &&
+	: >thirteen &&
+	git update-index --add thirteen &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 1 &&
+	just_over_16_days_ago=$((-1-16*86400)) &&
+	test-chmtime =$just_over_16_days_ago .git/sharedindex.* &&
+	: >fourteen &&
+	git update-index --add fourteen &&
+	test $(ls .git/sharedindex.* | wc -l) = 1
+'
+
+test_expect_success 'check splitIndex.sharedIndexExpire set to "never" and "now"' '
+	git config splitIndex.sharedIndexExpire never &&
+	just_10_years_ago=$((-365*10*86400)) &&
+	test-chmtime =$just_10_years_ago .git/sharedindex.* &&
+	: >fifteen &&
+	git update-index --add fifteen &&
+	test $(ls .git/sharedindex.* | wc -l) -gt 1 &&
+	git config splitIndex.sharedIndexExpire now &&
+	just_1_second_ago=-1 &&
+	test-chmtime =$just_1_second_ago .git/sharedindex.* &&
+	: >sixteen &&
+	git update-index --add sixteen &&
+	test $(ls .git/sharedindex.* | wc -l) = 1
+'
+
 test_done