X-Git-Url: http://git.shiar.nl/barcat.git/blobdiff_plain/1de60201303fff6e0d612658790b4c44eff0c055..0bfa64faefa577d082b8e62aa0b53b11f307aec5:/t/examples.t

diff --git a/t/examples.t b/t/examples.t
index 19c1377..52e7a5a 100755
--- a/t/examples.t
+++ b/t/examples.t
@@ -1,7 +1,20 @@
 #!/usr/bin/env perl
 use 5.014;
 use warnings;
+use re '/ms';
+use IPC::Run 'run';
+
 use Test::More;
+{ # silence fail diagnostics because of single caller
+	no warnings 'redefine';
+	sub Test::Builder::_ok_debug {}
+}
+
+my %CMDARGS = (
+	ping => '-c 1',
+	curl => '-sS',
+	'cat \Klog/' => '/var/log/apache2/',
+);
 
 my $filename = 'barcat';
 open my $input, '<', $filename
@@ -9,12 +22,41 @@ open my $input, '<', $filename
 
 local $/ = "\n\n";
 while (readline $input) {
+	# find code snippets in the appropriate section
 	/^=head1 EXAMPLES/ ... /^=head1/ or next;
 	/^\h/ or next;
 	chomp;
 
-	my ($name) = /[\h(]*([^|]+)/;
-	ok(qx($_), $name);
+	# compose an identifier from significant parts
+	do {
+		s/^\h+//;             # indentation
+		s/\\\n\s*//g;         # line continuations
+		s/^[(\h]+//;          # subshell
+		s/^echo\ .*?\|\s*//;  # preceding input
+		s/\|.*//;             # subsequent pipes
+		s/^cat\ //;           # local file
+		s/^curl\ // and do {  # remote url
+			s/\ -.+//g;                 # download options
+			s{//[^/\s]+/\K\S*(?=/)}{};  # subdirectories
+			s{^https?://}{};            # http protocol
+		};
+	} for my $name = $_;
+
+	# prepare shell command to execute
+	my $cmd = $_;
+	while (my ($subcmd, $args) = each %CMDARGS) {
+		$subcmd .= " \\K", $args .= ' ' unless $subcmd =~ m/\\K/;
+		$cmd =~ s/\b$subcmd/$args/;
+	}
+	my @cmd = (bash => -c => "set -o pipefail\n$cmd");
+
+	# run and report unexpected results
+	ok(eval {
+		run(\@cmd, \undef, \my $output);
+		$? == 0 or die "error status ", $? >> 8, "\n";
+		length $output or die "empty output\n";
+		return 1;
+	}, $name) or diag("Failed command\n@cmd\nfrom $filename line $.: $@");
 }
 
 done_testing();