Make extensions in ext run their tests from the extension's own directory.

Inspired by, and in parts borrows from, Schwern's branch on github, but takes a
slightly different approach in places.

Not quite perfect yet - ext/File-Glob still runs from t, at least one FIXME
needs fixing, and the changes to dual-life modules' tests need to be filtered
back upstream, and possibly modified to suit their respective authors.

But it works.

7 files changed, 9 insertions, 38 deletions

diff --git a/ext/POSIX/t/is.t b/ext/POSIX/t/is.t
index 489b3a9638..cb36fb5692 100644
--- a/ext/POSIX/t/is.t
+++ b/ext/POSIX/t/is.t
@@ -1,8 +1,6 @@
 #!./perl -w
 
 BEGIN {
-    chdir 't' if -d 't';
-    @INC = '../lib';
     require Config; import Config;
     if ($^O ne 'VMS' and $Config{'extensions'} !~ /\bPOSIX\b/) {
 	print "1..0\n";
@@ -72,7 +70,7 @@ foreach my $s (keys %classes) {
 
 # Expected number of tests is one each for every combination of a
 # known is<xxx> function and string listed above.
-require './test.pl';
+require '../../t/test.pl';
 plan(tests => keys(%classes) * keys(%functions));
 
 
diff --git a/ext/POSIX/t/posix.t b/ext/POSIX/t/posix.t
index 93665325dd..0800f914b5 100644
--- a/ext/POSIX/t/posix.t
+++ b/ext/POSIX/t/posix.t
@@ -1,8 +1,6 @@
 #!./perl
 
 BEGIN {
-    chdir 't' if -d 't';
-    @INC = '../lib';
     require Config; import Config;
     if ($^O ne 'VMS' and $Config{'extensions'} !~ /\bPOSIX\b/) {
 	print "1..0\n";
@@ -10,7 +8,7 @@ BEGIN {
     }
 }
 
-BEGIN { require "./test.pl"; }
+BEGIN { require "../../t/test.pl"; }
 plan(tests => 66);
 
 use POSIX qw(fcntl_h signal_h limits_h _exit getcwd open read strftime write
@@ -50,9 +48,9 @@ if ($Is_VMS) {
 }
 
 
-ok( $testfd = open("TEST", O_RDONLY, 0),        'O_RDONLY with open' );
+ok( $testfd = open("Makefile.PL", O_RDONLY, 0),        'O_RDONLY with open' );
 read($testfd, $buffer, 4) if $testfd > 2;
-is( $buffer, "#!./",                      '    with read' );
+is( $buffer, "# Ex",                      '    with read' );
 
 TODO:
 {
@@ -147,14 +145,11 @@ SKIP: {
 }
 
 my $pat;
-if ($Is_MacOS) {
-    $pat = qr/:t:$/;
-} 
-elsif ( $unix_mode ) {
-    $pat = qr#[\\/]t$#i;
+if ( $unix_mode ) {
+    $pat = qr#[\\/]POSIX$#i;
 }
 else {
-    $pat = qr/\.T]/i;
+    $pat = qr/\.POSIX]/i;
 }
 like( getcwd(), qr/$pat/, 'getcwd' );
 
diff --git a/ext/POSIX/t/sigaction.t b/ext/POSIX/t/sigaction.t
index 0d532b2472..fd6cf2de65 100644
--- a/ext/POSIX/t/sigaction.t
+++ b/ext/POSIX/t/sigaction.t
@@ -1,10 +1,5 @@
 #!./perl
 
-BEGIN {
-	chdir 't' if -d 't';
-	unshift @INC, '../lib';
-}
-
 BEGIN{
 	# Don't do anything if POSIX is missing, or sigaction missing.
 	use Config;
diff --git a/ext/POSIX/t/sysconf.t b/ext/POSIX/t/sysconf.t
index f11841c7fb..2dc9762977 100644
--- a/ext/POSIX/t/sysconf.t
+++ b/ext/POSIX/t/sysconf.t
@@ -1,11 +1,6 @@
 #!perl -T
 
 BEGIN {
-    if ($ENV{PERL_CORE}) {
-        chdir 't';
-        @INC = '../lib';
-    }
-
     use Config;
     use Test::More;
     plan skip_all => "POSIX is unavailable" if $Config{'extensions'} !~ m!\bPOSIX\b!;
diff --git a/ext/POSIX/t/taint.t b/ext/POSIX/t/taint.t
index a88f6561fb..3ca01743e0 100644
--- a/ext/POSIX/t/taint.t
+++ b/ext/POSIX/t/taint.t
@@ -1,8 +1,6 @@
 #!./perl -Tw
 
 BEGIN {
-    chdir 't' if -d 't';
-    @INC = '../lib';
     require Config; import Config;
     if ($^O ne 'VMS' and $Config{'extensions'} !~ /\bPOSIX\b/) {
 	print "1..0\n";
@@ -28,7 +26,7 @@ my $testfd;
 
 my $TAINT = substr($^X, 0, 0);
 
-my $file = 'TEST';
+my $file = 'POSIX.xs';
 
 eval { mkfifo($TAINT. $file, 0) };
 like($@, qr/^Insecure dependency/,              'mkfifo with tainted data');
@@ -40,7 +38,7 @@ eval { $testfd = open($file, O_RDONLY, 0) };
 is($@, "",                                  'open with untainted data');
 
 read($testfd, $buffer, 2) if $testfd > 2;
-is( $buffer, "#!",	                          '    read' );
+is( $buffer, "#d",	                          '    read' );
 ok(tainted($buffer),                          '    scalar tainted');
 
 TODO: {
diff --git a/ext/POSIX/t/termios.t b/ext/POSIX/t/termios.t
index 2fbff9665a..7c3deb6678 100644
--- a/ext/POSIX/t/termios.t
+++ b/ext/POSIX/t/termios.t
@@ -1,11 +1,6 @@
 #!perl -T
 
 BEGIN {
-    if ($ENV{PERL_CORE}) {
-        chdir 't';
-        @INC = '../lib';
-    }
-
     use Config;
     use Test::More;
     plan skip_all => "POSIX is unavailable" 
diff --git a/ext/POSIX/t/waitpid.t b/ext/POSIX/t/waitpid.t
index c36a611bfc..105b1be1b2 100644
--- a/ext/POSIX/t/waitpid.t
+++ b/ext/POSIX/t/waitpid.t
@@ -1,9 +1,4 @@
 BEGIN {
-	chdir 't' if -d 't';
-	unshift @INC, '../lib';
-}
-
-BEGIN {
     use Config;
     unless ($Config{d_fork}) {
 	print "1..0 # Skip: no fork\n";