Solve all test failures with combinations of old perl, Test::More and Exporter

[perl/modules/Test-Leaner.git] / t / 02-import-arg.t

diff --git a/t/02-import-arg.t b/t/02-import-arg.t
index fd6f0f9835a1bae3b1ce6dd709ae454d01927825..46f2cc175863edc914d31afe15e5ac5c8f4a50c4 100644 (file)
--- a/t/02-import-arg.t
+++ b/t/02-import-arg.t
@@ -5,6 +5,8 @@ use warnings;
 
 BEGIN { delete $ENV{PERL_TEST_LEANER_USES_TEST_MORE} }
 
+use Carp ();
+
 use Test::Leaner ();
 use Test::More   ();
 
@@ -17,6 +19,20 @@ sub get_subroutine {
  return *$glob{CODE};
 }
 
+sub has_module_version {
+ my ($module, $version) = @_;
+
+ local $@;
+ eval qq{
+  require $module;
+  "$module"->VERSION(\$version);
+  1;
+ }
+}
+
+sub has_test_more_version { has_module_version 'Test::More', @_ }
+sub has_exporter_version  { has_module_version 'Exporter',   @_ }
+
 my $this_stash = \%main::;
 
 my @default_exports = qw<
@@ -40,19 +56,32 @@ my @default_exports = qw<
 sub check_imports {
  my %imported     = map { $_ => 1 } @{ $_[0] || [] };
  my @not_imported = @{ $_[1] || [] };
- for (@not_imported, grep !$imported{$_}, @default_exports) {
-  Test::More::ok(!exists $this_stash->{$_}, "$_ was not imported");
- }
- for (grep $imported{$_}, @default_exports) {
-  my $code = get_subroutine($this_stash, $_);
-  Test::More::ok($code, "$_ was imported");
+
+SKIP:
+ {
+  local $Test::Builder::Level = ($Test::Builder::Level || 0) + 1;
+  Test::More::skip($_[2] => @not_imported + @default_exports) if defined $_[2];
+
+  for (@not_imported, grep !$imported{$_}, @default_exports) {
+   Test::More::ok(!exists $this_stash->{$_}, "$_ was not imported");
+  }
+  for (grep $imported{$_}, @default_exports) {
+   my $code = get_subroutine($this_stash, $_);
+   Test::More::ok($code, "$_ was imported");
+  }
  }
+
  delete $this_stash->{$_} for @default_exports, keys %imported, @not_imported;
 }
 
-Test::More::plan(tests => 8 * @default_exports + 7 + 2);
+Test::More::plan(tests => 9 * @default_exports + 8 + 3);
+
+check_imports([ ], [ ], has_test_more_version('0.51') ? undef : 'Test::More::plan exports stuff on Test::More <= 0.51');
 
-check_imports();
+local *Carp::carp = sub {
+ local $Carp::CarpLevel = ($Carp::CarpLevel || 0) + 1;
+ Carp::croak(@_);
+} unless has_exporter_version('5.565');
 
 {
  local $@;
@@ -72,6 +101,16 @@ check_imports();
  check_imports([ ], [ 'nonexistent' ]);
 }
 
+{
+ delete $this_stash->{use_ok} unless has_test_more_version('0.51');
+ local $@;
+ eval {
+  Test::Leaner->import(import => [ 'use_ok' ]);
+ };
+ Test::More::like($@, qr/^"use_ok" is not exported by the Test::Leaner module/, 'import "use_ok" croaks');
+ check_imports([ ], [ 'use_ok' ]);
+}
+
 {
  local $@;
  eval {
@@ -102,7 +141,10 @@ check_imports();
  check_imports([ grep $_ ne 'fail', @default_exports ], [ 'fail' ]);
 }
 
+SKIP:
 {
+ Test::More::skip('Exporter 5.58 required to test negative imports'
+                   => 1 + @default_exports) unless has_exporter_version('5.58');
  local $@;
  eval {
   Test::Leaner->import(import => [ 'pass' ], import => [ '!fail' ]);
@@ -111,7 +153,10 @@ check_imports();
  check_imports([ 'pass' ], [ ]);
 }
 
+SKIP:
 {
+ Test::More::skip('Exporter 5.58 required to test negative imports'
+                   => 1 + @default_exports) unless has_exporter_version('5.58');
  local $@;
  eval {
   Test::Leaner->import(import => [ 'fail' ], import => [ '!fail' ]);