1 files changed, 94 insertions, 0 deletions
diff --git a/t/lib/tb-xcode.t b/t/lib/tb-xcode.t
new file mode 100644
index 0000000000..00be51e542
--- /dev/null
+++ b/t/lib/tb-xcode.t
@@ -0,0 +1,94 @@
+BEGIN {
+    chdir 't' if -d 't';
+    @INC = '../lib';
+}
+
+# Before `make install' is performed this script should be runnable with
+# `make test'. After `make install' it should work as `perl test.pl'
+
+######################### We start with some black magic to print on failure.
+
+# Change 1..1 below to 1..last_test_to_print .
+# (It may become useful if the test is moved to ./t subdirectory.)
+
+BEGIN { $| = 1; print "1..37\n"; }
+END {print "not ok 1\n" unless $loaded;}
+use Text::Balanced qw ( extract_codeblock );
+$loaded = 1;
+print "ok 1\n";
+$count=2;
+use vars qw( $DEBUG );
+sub debug { print "\t>>>",@_ if $DEBUG }
+
+######################### End of black magic.
+
+
+$cmd = "print";
+$neg = 0;
+while (defined($str = <DATA>))
+{
+	chomp $str;
+	if ($str =~ s/\A# USING://) { $neg = 0; $cmd = $str; next; }
+	elsif ($str =~ /\A# TH[EI]SE? SHOULD FAIL/) { $neg = 1; next; }
+	elsif (!$str || $str =~ /\A#/) { $neg = 0; next }
+	$str =~ s/\\n/\n/g;
+	debug "\tUsing: $cmd\n";
+	debug "\t   on: [$str]\n";
+
+	my @res;
+	$var = eval "\@res = $cmd";
+	debug "\t   Failed: $@ at " . $@+0 .")" if $@;
+	debug "\t list got: [" . join("|",@res) . "]\n";
+	debug "\t list left: [$str]\n";
+	print "not " if (substr($str,pos($str)||0,1) eq ';')==$neg;
+	print "ok ", $count++;
+	print "\n";
+
+	pos $str = 0;
+	$var = eval $cmd;
+	$var = "<undef>" unless defined $var;
+	debug "\t scalar got: [$var]\n";
+	debug "\t scalar left: [$str]\n";
+	print "not " if ($str =~ '\A;')==$neg;
+	print "ok ", $count++;
+	print " ($@)" if $@ && $DEBUG;
+	print "\n";
+}
+
+__DATA__
+
+# USING: extract_codeblock($str,'<>');
+< %x = ( try => "this") >;
+< %x = () >;
+< %x = ( $try->{this}, "too") >;
+< %'x = ( $try->{this}, "too") >;
+< %'x'y = ( $try->{this}, "too") >;
+< %::x::y = ( $try->{this}, "too") >;
+
+# THIS SHOULD FAIL
+< %x = do { $try > 10 } >;
+
+# USING: extract_codeblock($str);
+
+{ $a = /\}/; };
+{ sub { $_[0] /= $_[1] } };  # / here
+{ 1; };
+{ $a = 1; };
+
+
+# USING: extract_codeblock($str,undef,'=*');
+========{$a=1};
+
+# USING: extract_codeblock($str,'{}<>');
+< %x = do { $try > 10 } >;
+
+# USING: extract_codeblock($str,'{}',undef,'<>');
+< %x = do { $try > 10 } >;
+
+# USING: extract_codeblock($str,'{}');
+{ $a = $b; # what's this doing here? \n };'
+{ $a = $b; \n $a =~ /$b/; \n @a = map /\s/ @b };
+
+# THIS SHOULD FAIL
+{ $a = $b; # what's this doing here? };'
+{ $a = $b; # what's this doing here? ;'