Test a refresh that finds the slot lock held

MANUAL says such a request serves the expired copy and logs nothing,
and only the case where the lock file cannot be opened was tested.

1 file changed, 28 insertions, 6 deletions

diff --git a/tests/t0003-cache.sh b/tests/t0003-cache.shindex 232f6ff..a65b3ce 100755--- a/tests/t0003-cache.sh+++ b/tests/t0003-cache.sh@@ -20,6 +20,17 @@ request_all_pages() { 	done } +# Runs a command while holding the flock on the file named first, as another+# request at work on the same lock would.+write_hold_lock() {+	write_script hold-lock "$PERL_PATH" <<-\EOF+	use Fcntl qw(:flock);+	open(my $lock, ">>", shift) or die "$!\n";+	flock($lock, LOCK_EX | LOCK_NB) or die "$!\n";+	exit(system(@ARGV) ? 1 : 0);+	EOF+}+ test_expect_success 'a cache-size of 0 leaves no slot behind' ' 	rm -f cache/* && 	sed "s/^cache-size=.*/cache-size=0/" cgitrc >size0rc &&@@ -446,6 +457,22 @@ test_expect_success SANITY 'a refresh that cannot lock serves the expired slot a 	grep "Unable to open .*\.lock: Permission denied" stale.err ' +# A refresh that finds the lock held is another request already at work on+# the slot, so the expired copy is served and nothing is logged.+test_expect_success PERL 'a refresh finding the lock held serves the expired slot quietly' '+	write_hold_lock &&+	rm -rf cache3 && mkdir cache3 &&+	cgit_ok bigkeyrc "url=bigpage/" >/dev/null &&+	slot=$(ls cache3) &&+	echo "the expired copy" >>"cache3/$slot" &&+	touch -t 200001010000 "cache3/$slot" &&+	CGIT_CONFIG="$PWD/bigkeyrc" QUERY_STRING="url=bigpage/" \+	./hold-lock "cache3/$slot.lock" cgit >held.out 2>held.err &&+	test_grep "^Status: 200" held.out &&+	test_grep "the expired copy" held.out &&+	test_must_be_empty held.err+'+ # A lock file that cannot take the key goes with its lock, rather than # staying behind locked while the page renders uncached. The limit is on # files, so the log and cgit's exit status go through the pipe as well.@@ -485,12 +512,7 @@ test_expect_success 'set up a cached scan of two repositories' ' # in its own process, leaving the file to the holder. That is only another # request at work and no cause for a line in the log. test_expect_success PERL 'a scan finding its lock held runs uncached' '-	write_script hold-lock "$PERL_PATH" <<-\EOF &&-	use Fcntl qw(:flock);-	open(my $lock, ">>", shift) or die "$!\n";-	flock($lock, LOCK_EX | LOCK_NB) or die "$!\n";-	exit(system(@ARGV) ? 1 : 0);-	EOF+	write_hold_lock && 	rm "cache5/$scanned_rc" && 	CGIT_CONFIG="$PWD/scanrc" QUERY_STRING="url=" \ 	./hold-lock "cache5/$scanned_rc.lock" cgit >held.out 2>held.err &&
diff --git a/tests/t0003-cache.sh b/tests/t0003-cache.sh
index 232f6ff..a65b3ce 100755
--- a/tests/t0003-cache.sh
+++ b/tests/t0003-cache.sh
@@ -20,6 +20,17 @@ request_all_pages() {
 	done
 }
 
+# Runs a command while holding the flock on the file named first, as another
+# request at work on the same lock would.
+write_hold_lock() {
+	write_script hold-lock "$PERL_PATH" <<-\EOF
+	use Fcntl qw(:flock);
+	open(my $lock, ">>", shift) or die "$!\n";
+	flock($lock, LOCK_EX | LOCK_NB) or die "$!\n";
+	exit(system(@ARGV) ? 1 : 0);
+	EOF
+}
+
 test_expect_success 'a cache-size of 0 leaves no slot behind' '
 	rm -f cache/* &&
 	sed "s/^cache-size=.*/cache-size=0/" cgitrc >size0rc &&
@@ -446,6 +457,22 @@ test_expect_success SANITY 'a refresh that cannot lock serves the expired slot a
 	grep "Unable to open .*\.lock: Permission denied" stale.err
 '
 
+# A refresh that finds the lock held is another request already at work on
+# the slot, so the expired copy is served and nothing is logged.
+test_expect_success PERL 'a refresh finding the lock held serves the expired slot quietly' '
+	write_hold_lock &&
+	rm -rf cache3 && mkdir cache3 &&
+	cgit_ok bigkeyrc "url=bigpage/" >/dev/null &&
+	slot=$(ls cache3) &&
+	echo "the expired copy" >>"cache3/$slot" &&
+	touch -t 200001010000 "cache3/$slot" &&
+	CGIT_CONFIG="$PWD/bigkeyrc" QUERY_STRING="url=bigpage/" \
+	./hold-lock "cache3/$slot.lock" cgit >held.out 2>held.err &&
+	test_grep "^Status: 200" held.out &&
+	test_grep "the expired copy" held.out &&
+	test_must_be_empty held.err
+'
+
 # A lock file that cannot take the key goes with its lock, rather than
 # staying behind locked while the page renders uncached. The limit is on
 # files, so the log and cgit's exit status go through the pipe as well.
@@ -485,12 +512,7 @@ test_expect_success 'set up a cached scan of two repositories' '
 # in its own process, leaving the file to the holder. That is only another
 # request at work and no cause for a line in the log.
 test_expect_success PERL 'a scan finding its lock held runs uncached' '
-	write_script hold-lock "$PERL_PATH" <<-\EOF &&
-	use Fcntl qw(:flock);
-	open(my $lock, ">>", shift) or die "$!\n";
-	flock($lock, LOCK_EX | LOCK_NB) or die "$!\n";
-	exit(system(@ARGV) ? 1 : 0);
-	EOF
+	write_hold_lock &&
 	rm "cache5/$scanned_rc" &&
 	CGIT_CONFIG="$PWD/scanrc" QUERY_STRING="url=" \
 	./hold-lock "cache5/$scanned_rc.lock" cgit >held.out 2>held.err &&