Force dep installs during travis build

.travis.yml

@@ -1,4 +1,5 @@
 language: perl
+sudo: false
 perl:
   - 5.8.1
   - 5.8.3
@@ -12,11 +13,16 @@ perl:
   - 5.16.3
   - 5.18.4
   - 5.20.3
-  - 5.22.1
+  - 5.22.3
+  - 5.24.2
+  - 5.26.1
 before_install:
-  - git clone git://github.com/haarg/perl-travis-helper
-  - source perl-travis-helper/init
+  - eval $(curl https://travis-perl.github.io/init) --auto
   - build-perl
   - perl -V
   - build-dist
   - cd $BUILD_DIR
+install:
+  - export AUTOMATED_TESTING=1 HARNESS_TIMER=1 AUTHOR_TESTING=0 RELEASE_TESTING=0
+  - cpanm --quiet --installdeps --notest .
+  - cpanm --quiet --installdeps --with-develop --notest . || /bin/true

cpanfile

@@ -0,0 +1,5 @@
+requires 'IO::Pty';
+on 'develop' => sub {
+    requires 'Readonly';
+};
+

t/readonly.t

@@ -11,15 +11,24 @@ use strict;
 use warnings;
 
 use IPC::Run 'run';
-use Test::More qw( no_plan );
-use Readonly;
+use Test::More;
+
+$] > 5.014 or plan skip_all => q{IPC::Run doesn't support Readonly below 5.14};
+
+BEGIN {
+    eval 'use Readonly';
+    $INC{'Readonly.pm'} or plan skip_all => "Readonly is require for this test to work.";
+}
 
 my @lowercase = 'a' .. 'c';
 Readonly::Array my @UPPERCASE => 'A' .. 'C';
 Readonly my @MIXEDCASE        => qw( X y Z );
 
 run_echo($_) for ( @lowercase, @UPPERCASE, @MIXEDCASE );
 
+done_testing();
+exit;
+
 sub run_echo {
     my $value = shift;