[PATCH v7 3/6] t0021: write "OUT <size>" only on success

[Lars Schneider <larsxschneider@gmail.com>]

"rot13-filter.pl" always writes "OUT <size>" to the debug log at the end
of a response.

This works without issues for the existing responses "abort", "error",
and "success". A new response "delayed", that will be introduced in a
subsequent patch, accepts the input without giving the filtered result
right away. Since we actually have the data already available in our
mock filter the debug log output would be wrong/misleading. Therefore,
we do not write "OUT <size>" for "delayed" responses.

To simplify the code we do not write "OUT <size>" for "abort" and
"error" responses, too, as their size is always zero.

Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
---
 t/t0021-conversion.sh   | 6 +++---
 t/t0021/rot13-filter.pl | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index 0139b460e7..0c04d346a1 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -588,7 +588,7 @@ test_expect_success PERL 'process filter should restart after unexpected write f
 		cat >expected.log <<-EOF &&
 			START
 			init handshake complete
-			IN: smudge smudge-write-fail.r $SF [OK] -- OUT: $SF [WRITE FAIL]
+			IN: smudge smudge-write-fail.r $SF [OK] -- [WRITE FAIL]
 			START
 			init handshake complete
 			IN: smudge test.r $S [OK] -- OUT: $S . [OK]
@@ -634,7 +634,7 @@ test_expect_success PERL 'process filter should not be restarted if it signals a
 		cat >expected.log <<-EOF &&
 			START
 			init handshake complete
-			IN: smudge error.r $SE [OK] -- OUT: 0 [ERROR]
+			IN: smudge error.r $SE [OK] -- [ERROR]
 			IN: smudge test.r $S [OK] -- OUT: $S . [OK]
 			IN: smudge test2.r $S2 [OK] -- OUT: $S2 . [OK]
 			STOP
@@ -673,7 +673,7 @@ test_expect_success PERL 'process filter abort stops processing of all further f
 		cat >expected.log <<-EOF &&
 			START
 			init handshake complete
-			IN: smudge abort.r $SA [OK] -- OUT: 0 [ABORT]
+			IN: smudge abort.r $SA [OK] -- [ABORT]
 			STOP
 		EOF
 		test_cmp_exclude_clean expected.log debug.log &&
diff --git a/t/t0021/rot13-filter.pl b/t/t0021/rot13-filter.pl
index 0b943bb377..5e43faeec1 100644
--- a/t/t0021/rot13-filter.pl
+++ b/t/t0021/rot13-filter.pl
@@ -153,9 +153,6 @@ while (1) {
 		die "bad command '$command'";
 	}
 
-	print $debug "OUT: " . length($output) . " ";
-	$debug->flush();
-
 	if ( $pathname eq "error.r" ) {
 		print $debug "[ERROR]\n";
 		$debug->flush();
@@ -178,6 +175,9 @@ while (1) {
 			die "${command} write error";
 		}
 
+		print $debug "OUT: " . length($output) . " ";
+		$debug->flush();
+
 		while ( length($output) > 0 ) {
 			my $packet = substr( $output, 0, $MAX_PACKET_CONTENT_SIZE );
 			packet_bin_write($packet);
-- 
2.13.2