Fix places in TestLib.pm in need of adaptation to the output of Msys perl

michaelpq · michaelpq · commit 0d91c52a8fc7 · 2021-09-22T08:42:42.000+09:00
Contrary to the output of native perl, Msys perl generates outputs with CRLFs characters. There are already places in the TAP code where CRLFs (\r\n) are automatically converted to LF (\n) on Msys, but we missed a couple of places when running commands and using their output for comparison, that would lead to failures. This problem has been found thanks to the test added in 5adb067 using TestLib::command_checks_all(), but after a closer look more code paths were missing a filter. This is backpatched all the way down to prevent any surprises if a new test is introduced in stable branches. Reviewed-by: Andrew Dunstan, Álvaro Herrera Discussion: https://postgr.es/m/1252480.1631829409@sss.pgh.pa.us Backpatch-through: 9.6
diff --git a/src/test/perl/TestLib.pm b/src/test/perl/TestLib.pm
@@ -434,6 +434,7 @@ sub run_command
 	my ($cmd) = @_;
 	my ($stdout, $stderr);
 	my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
+	foreach ($stderr, $stdout) { s/\r\n/\n/g if $Config{osname} eq 'msys'; }
 	chomp($stdout);
 	chomp($stderr);
 	return ($stdout, $stderr);
@@ -878,6 +879,7 @@ sub command_like
 	my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
 	ok($result, "$test_name: exit code 0");
 	is($stderr, '', "$test_name: no stderr");
+	$stdout =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
 	like($stdout, $expected_stdout, "$test_name: matches");
 	return;
 }
@@ -930,6 +932,7 @@ sub command_fails_like
 	print("# Running: " . join(" ", @{$cmd}) . "\n");
 	my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
 	ok(!$result, "$test_name: exit code not 0");
+	$stderr =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
 	like($stderr, $expected_stderr, "$test_name: matches");
 	return;
 }
@@ -974,6 +977,8 @@ sub command_checks_all
 	  if $ret & 127;
 	$ret = $ret >> 8;
 
+	foreach ($stderr, $stdout) { s/\r\n/\n/g if $Config{osname} eq 'msys'; }
+
 	# check status
 	ok($ret == $expected_ret,
 		"$test_name status (got $ret vs expected $expected_ret)");
