X-Git-Url: http://git.shiar.nl/barcat.git/blobdiff_plain/38eb915e53017bb02788efc30a8650a8b322a753..fe12731a3c7c46a33d436edd88a2fdf758ffe82b:/t/examples.t

diff --git a/t/examples.t b/t/examples.t
index cd7f1b3..a331ce3 100755
--- a/t/examples.t
+++ b/t/examples.t
@@ -1,12 +1,18 @@
 #!/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/',
+	'cat \Khttpd/' => '/var/log/apache2/',
 );
 
 my $filename = 'barcat';
@@ -15,18 +21,76 @@ open my $input, '<', $filename
 
 local $/ = "\n\n";
 while (readline $input) {
+	# find scriptlets in the appropriate section
 	/^=head1 EXAMPLES/ ... /^=head1/ or next;
-	/^\h/ or next;
+	/^\h/ or next;  # indented code snippet
+	/\A\h*>/ and next;  # psql prompt
 	chomp;
+	my $cmd = $_;
+	my $ref = "$filename line $.";
 
-	my ($name) = /[\h(]*([^|]+)/;
+	# store curl downloads
+	s{\bcurl (\S*)(?<param>[^|]*)}{
+		my $url = $1;
+		my @params = split ' ', $+{param};
+		my $ext = (
+			$cmd =~ /\bxml/     ? 'xml'  :
+			$cmd =~ / jq /      ? 'json' :
+			$cmd =~ /[=.]csv\b/ ? 'csv'  :
+			                      'txt'
+		);
+		my ($domain, $path) = $url =~ m{//([^/]+) .*/ ([^/]*) \z}x;
+		$path =~ s/\.$ext\z//;
+		my $cache = join '.', $path =~ tr/./_/r, $domain, $ext;
+		$cache = "sample/data/$cache";
+		SKIP: {
+			-e $cache and skip($url, 1);
+			ok(defined runres(['curl', '-sS', $url, '-o', $cache, @params]), $url)
+				or diag("download at $ref: $@");
+		}
+		"cat $cache"
+	}e;
 
-	my $cmd = $_;
+	# 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/'(\S+)[^']*'/$1/g;  # quoted arguments
+		s/\h*\|.*//;          # subsequent pipes
+		s/^cat\ (?:\S+\/)?//; # local file
+	} for my $name = $cmd;
+
+	# prepare shell command to execute
 	while (my ($subcmd, $args) = each %CMDARGS) {
 		$subcmd .= " \\K", $args .= ' ' unless $subcmd =~ m/\\K/;
 		$cmd =~ s/\b$subcmd/$args/;
 	}
-	ok(qx($cmd), $name);
+
+	# run and report unexpected results
+	my $output = runres($cmd);
+	ok(!!$output, $name)
+		or diag("command at $ref\n$cmd\n" . ($@ || 'empty output'));
+	defined $output or next;
+
+	# record output for review
+	my $numprefix = sprintf '%02d', Test::More->builder->current_test;
+	if (open my $record, '>', "sample/out/t$numprefix-$name.txt") {
+		print {$record} $output;
+	}
+}
+
+sub runres {
+	my ($cmd) = @_;
+	ref $cmd eq 'ARRAY'
+		or $cmd = [bash => -c => "set -o pipefail\n$cmd"];
+	eval {
+		run($cmd, \undef, \my $output, \my $error);
+		die("error message:\n".($error =~ s/^/    /gr)."\n") if $error;
+		$? == 0 or die "exit status ", $? >> 8, "\n";
+		return $output;
+	};
 }
 
 done_testing();