diff --git a/t/transform.t b/t/transform.t
index 3e726e5..613d991 100644
--- a/t/transform.t
+++ b/t/transform.t
@@ -18,38 +18,44 @@ if(1) {
     my @lr = ($extent[2], $extent[3]);
 	my @ur = ($lr[0],$ul[1]);
 	my @ll = ($ul[0],$lr[1]);
-    my $result = "3358768.81711923 3391240.32068776 3348976.84626544 3401215.87353221 2019470.50927319 2094945.30821076 2088830.64307375 2025411.23009774";
+    my @result = qw/3358768.81711923 3391240.32068776 3348976.84626544 3401215.87353221 2019470.50927319 2094945.30821076 2088830.64307375 2025411.23009774/;
 
     my @x = ($ul[0], $lr[0], $ur[0], $ll[0]);
     my @y = ($ul[1], $lr[1], $ur[1], $ll[1]);
     my $z = undef;
-    ok(Geo::GDAL::FFI::OCTTransform($ct, 4, \@x, \@y, \@$z), "Coordinate transformation 3D worked");
-    ok(qq/@x @y/ eq $result, "Resulting coordinates");
+    my $res = Geo::GDAL::FFI::OCTTransform($ct, 4, \@x, \@y, \@$z);
+    is($res, 1, "Coordinate transformation 3D worked");
+    is_deeply([@x, @y], \@result, "Checking resulting coordinates");
 
     @x = ($ul[0], $lr[0], $ur[0], $ll[0]);
     @y = ($ul[1], $lr[1], $ur[1], $ll[1]);
     $z = undef;
     my @ps = (0,0,0,0);
-    ok(Geo::GDAL::FFI::OCTTransformEx($ct, 4, \@x, \@y, \@$z, \@ps), "Coordinate transformation 3D with pabSuccess worked");
-    ok(qq/@x @y/ eq $result, "Resulting coordinates");
-    ok(scalar @ps == 4 && qq/@ps/ eq qq/1 1 1 1/, "Resulting pabSuccess is TRUE x 4" );
+    $res = Geo::GDAL::FFI::OCTTransformEx($ct, 4, \@x, \@y, \@$z, \@ps);
+    is($res, 1, "Coordinate transformation 3D with pabSuccess worked");
+    is_deeply([@x, @y], \@result, "Checking resulting coordinates");
+    is(scalar @ps, 4, "Resulting pabSuccess is an array of size 4");
+    is_deeply(\@ps, [1, 1, 1, 1], "Resulting pabSuccess is TRUE x 4" );
 
     @x = ($ul[0], $lr[0], $ur[0], $ll[0]);
     @y = ($ul[1], $lr[1], $ur[1], $ll[1]);
     $z = undef;
     my $t = undef;
     @ps = (0,0,0,0);
-    ok(Geo::GDAL::FFI::OCTTransform4D($ct, 4, \@x, \@y, \@$z, \@$t, \@ps), "Coordinate transformation 4D worked");
-    ok(qq/@x @y/ eq $result && qq/@ps/ eq qq/1 1 1 1/, "Resulting coordinates");
+    $res = Geo::GDAL::FFI::OCTTransform4D($ct, 4, \@x, \@y, \@$z, \@$t, \@ps);
+    is($res, 1, "Coordinate transformation 4D worked");
+    is_deeply([@x, @y, @ps], [@result, 1, 1, 1, 1], "Checking resulting coordinates");
 
     @x = ($ul[0], $lr[0], $ur[0], $ll[0]);
     @y = ($ul[1], $lr[1], $ur[1], $ll[1]);
     $z = undef;
     $t = undef;
     @ps = (0,0,0,0);
-    ok(Geo::GDAL::FFI::OCTTransform4DWithErrorCodes($ct, 4, \@x, \@y, \@$z, \@$t, \@ps), "Coordinate transformation 4D worked");
-    ok(qq/@x @y/ eq $result, "Resulting coordinates");
-    ok(scalar @ps == 4 && qq/@ps/ eq qq/0 0 0 0/, "Resulting pabSuccess is SUCCESS(i.e. 0) x 4" );
+    $res = Geo::GDAL::FFI::OCTTransform4DWithErrorCodes($ct, 4, \@x, \@y, \@$z, \@$t, \@ps);
+    is($res, 1, "Coordinate transformation 4D worked");
+    is_deeply([@x, @y], \@result, "Checking resulting coordinates");
+    is(scalar @ps, 4, "Resulting pabSuccess is an array of size 4");
+    is_deeply(\@ps, [0, 0, 0, 0], "Resulting pabSuccess is SUCCESS(i.e. 0) x 4" );
 }
 
 done_testing();