Update author tests

[perl/modules/Test-Leaner.git] / t / lib / VPIT / TestHelpers.pm

diff --git a/t/lib/VPIT/TestHelpers.pm b/t/lib/VPIT/TestHelpers.pm
new file mode 100644 (file)
index 0000000..3d545e8
--- /dev/null
+++ b/t/lib/VPIT/TestHelpers.pm
@@ -0,0 +1,115 @@
+package VPIT::TestHelpers;
+
+use strict;
+use warnings;
+
+my %exports = (
+ load_or_skip     => \&load_or_skip,
+ load_or_skip_all => \&load_or_skip_all,
+ skip_all         => \&skip_all,
+);
+
+sub import {
+ my $pkg = caller;
+
+ while (my ($name, $code) = each %exports) {
+  no strict 'refs';
+  *{$pkg.'::'.$name} = $code;
+ }
+}
+
+my $test_sub = sub {
+ my $sub = shift;
+
+ my $stash;
+ if ($INC{'Test/Leaner.pm'}) {
+  $stash = \%Test::Leaner::;
+ } else {
+  require Test::More;
+  $stash = \%Test::More::;
+ }
+
+ my $glob = $stash->{$sub};
+ return $glob ? *$glob{CODE} : undef;
+};
+
+sub skip { $test_sub->('skip')->(@_) }
+
+sub skip_all { $test_sub->('plan')->(skip_all => $_[0]) }
+
+sub diag {
+ my $diag = $test_sub->('diag');
+ $diag->($_) for @_;
+}
+
+our $TODO;
+local $TODO;
+
+sub load {
+ my ($pkg, $ver, $imports) = @_;
+
+ my $spec = $ver && $ver !~ /^[0._]*$/ ? "$pkg $ver" : $pkg;
+ my $err;
+
+ local $@;
+ if (eval "use $spec (); 1") {
+  $ver = do { no strict 'refs'; ${"${pkg}::VERSION"} };
+  $ver = 'undef' unless defined $ver;
+
+  if ($imports) {
+   my @imports = @$imports;
+   my $caller  = (caller 1)[0];
+   local $@;
+   my $res = eval <<"IMPORTER";
+package
+        $caller;
+BEGIN { \$pkg->import(\@imports) }
+1;
+IMPORTER
+   $err = "Could not import '@imports' from $pkg $ver: $@" unless $res;
+  }
+ } else {
+  (my $file = "$pkg.pm") =~ s{::}{/}g;
+  delete $INC{$file};
+  $err = "Could not load $spec";
+ }
+
+ if ($err) {
+  return wantarray ? (0, $err) : 0;
+ } else {
+  diag "Using $pkg $ver";
+  return 1;
+ }
+}
+
+sub load_or_skip {
+ my ($pkg, $ver, $imports, $tests) = @_;
+
+ die 'You must specify how many tests to skip' unless defined $tests;
+
+ my ($loaded, $err) = load($pkg, $ver, $imports);
+ skip $err => $tests unless $loaded;
+
+ return $loaded;
+}
+
+sub load_or_skip_all {
+ my ($pkg, $ver, $imports) = @_;
+
+ my ($loaded, $err) = load($pkg, $ver, $imports);
+ skip_all $err unless $loaded;
+
+ return $loaded;
+}
+
+package VPIT::TestHelpers::Guard;
+
+sub new {
+ my ($class, $code) = @_;
+
+ bless { code => $code }, $class;
+}
+
+sub DESTROY { $_[0]->{code}->() }
+
+1;