t/examples: skip all if missing dependency

[barcat.git] / t / examples.t

diff --git a/t/examples.t b/t/examples.t
index a331ce352d5322d9aa26b8f4e0af1973ea7c1555..c9b285e70d84a6b410b4951d24e2b248a2e4c9da 100755 (executable)
--- a/t/examples.t
+++ b/t/examples.t
@@ -2,7 +2,6 @@
 use 5.014;
 use warnings;
 use re '/ms';
-use IPC::Run 'run';
 
 use Test::More;
 { # silence fail diagnostics because of single caller
@@ -10,9 +9,14 @@ use Test::More;
        sub Test::Builder::_ok_debug {}
 }
 
+eval q(use IPC::Run 'run');
+plan skip_all => "IPC::Run required to test commands" if $@;
+
 my %CMDARGS = (
-       ping => '-c 1',
+       ping => '-c 1 ',
        'cat \Khttpd/' => '/var/log/apache2/',
+       ' \K\*(?=\h*\|)' => 'sample/media/*.*',
+       find => 'sample/media -name \*.\* ',
 );
 
 my $filename = 'barcat';
@@ -21,6 +25,7 @@ open my $input, '<', $filename
 
 local $/ = "\n\n";
 while (readline $input) {
+SKIP: {
        # find scriptlets in the appropriate section
        /^=head1 EXAMPLES/ ... /^=head1/ or next;
        /^\h/ or next;  # indented code snippet
@@ -30,9 +35,10 @@ while (readline $input) {
        my $ref = "$filename line $.";
 
        # store curl downloads
-       s{\bcurl (\S*)(?<param>[^|]*)}{
-               my $url = $1;
-               my @params = split ' ', $+{param};
+       $cmd =~ s{\bcurl (\S*)([^|]*)}{
+               my ($url, $params) = ($1, $2);
+               my $cache = 'sample/data/';
+               -w $cache or skip($url, 2);
                my $ext = (
                        $cmd =~ /\bxml/     ? 'xml'  :
                        $cmd =~ / jq /      ? 'json' :
@@ -41,13 +47,15 @@ while (readline $input) {
                );
                my ($domain, $path) = $url =~ m{//([^/]+) .*/ ([^/]*) \z}x;
                $path =~ s/\.$ext\z//;
-               my $cache = join '.', $path =~ tr/./_/r, $domain, $ext;
-               $cache = "sample/data/$cache";
+               $cache .= join '.', $path =~ tr/./_/r, $domain, $ext;
+               my $cached = -e $cache;
                SKIP: {
-                       -e $cache and skip($url, 1);
-                       ok(defined runres(['curl', '-sS', $url, '-o', $cache, @params]), $url)
-                               or diag("download at $ref: $@");
+                       # download to file
+                       skip($url, 1) if $cached;
+                       $cached = defined runres("curl -sSf $url$params -o $cache");
+                       ok($cached, $url) or diag("download at $ref: $@");
                }
+               $cached or skip($url, 1);
                "cat $cache"
        }e;
 
@@ -64,8 +72,14 @@ while (readline $input) {
 
        # prepare shell command to execute
        while (my ($subcmd, $args) = each %CMDARGS) {
-               $subcmd .= " \\K", $args .= ' ' unless $subcmd =~ m/\\K/;
-               $cmd =~ s/\b$subcmd/$args/;
+               $subcmd .= " \\K" unless $subcmd =~ m/\\K/;
+               $cmd =~ s/$subcmd/$args/;
+       }
+
+       for my $param ($cmd =~ m{^[(\h]* (\w\S*)}gx) {
+               $param eq 'cat' or
+               runres(['which', $param])
+                       or diag("dependency $param missing at $ref\n$cmd"), skip($name, 1);
        }
 
        # run and report unexpected results
@@ -79,7 +93,7 @@ while (readline $input) {
        if (open my $record, '>', "sample/out/t$numprefix-$name.txt") {
                print {$record} $output;
        }
-}
+}}
 
 sub runres {
        my ($cmd) = @_;