Factor t/02-import-arg.t and t/04-fallback-import-arg.t into the same file

[perl/modules/Test-Leaner.git] / t / lib / Test / Leaner / TestImport.pm

diff --git a/t/lib/Test/Leaner/TestImport.pm b/t/lib/Test/Leaner/TestImport.pm
new file mode 100644 (file)
index 0000000..fd70030
--- /dev/null
+++ b/t/lib/Test/Leaner/TestImport.pm
@@ -0,0 +1,196 @@
+package Test::Leaner::TestImport;
+
+use strict;
+use warnings;
+
+use Carp ();
+
+use Test::Leaner ();
+use Test::More   ();
+
+sub get_subroutine {
+ my ($stash, $name) = @_;
+
+ my $glob = $stash->{$name};
+ return undef unless $glob;
+
+ return *$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 = \%Test::Leaner::TestImport::;
+
+my @default_exports = qw<
+ plan
+ skip
+ done_testing
+ pass
+ fail
+ ok
+ is
+ isnt
+ like
+ unlike
+ cmp_ok
+ is_deeply
+ diag
+ note
+ BAIL_OUT
+>;
+
+sub check_imports {
+ my %imported     = map { $_ => 1 } @{ $_[0] || [] };
+ my @not_imported = @{ $_[1] || [] };
+
+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;
+}
+
+sub test_import_arg {
+ local $Test::Builder::Level = ($Test::Builder::Level || 0) + 1;
+
+ my $use_fallback = $ENV{PERL_TEST_LEANER_USES_TEST_MORE};
+ if ($use_fallback and $^V ge v5.8.4 and $^V le v5.8.5) {
+  Test::More::plan(skip_all
+                       => 'goto may segfault randomly on perl 5.8.4 and 5.8.5');
+ } else {
+  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'
+ );
+
+ local *Carp::carp = sub {
+  local $Carp::CarpLevel = ($Carp::CarpLevel || 0) + 1;
+  Carp::croak(@_);
+ } unless has_exporter_version('5.565');
+
+ {
+  local $@;
+  eval {
+   Test::Leaner->import(import => [ ]);
+  };
+  Test::More::is($@, '', 'empty import does not croak');
+  check_imports(\@default_exports);
+ }
+
+ {
+  local $@;
+  eval {
+   Test::Leaner->import(import => [ 'nonexistent' ]);
+  };
+  my $class = $use_fallback ? 'Test::More' : 'Test::Leaner';
+  Test::More::like(
+   $@, qr/^"nonexistent" is not exported by the $class module/,
+   'import "nonexistent" croaks'
+  );
+  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 $@;
+  eval {
+   Test::Leaner->import(import => [ 'ok' ]);
+  };
+  Test::More::is($@, '', 'import "ok" does not croak');
+  check_imports([ 'ok' ], [ ]);
+ }
+
+ {
+  local $@;
+  eval {
+   Test::Leaner->import(
+    import => [ qw<like unlike> ],
+    import => [ qw<diag note> ],
+   );
+  };
+  Test::More::is($@, '',
+                 'import "like", "unlike", "diag" and "note" does not croak');
+  check_imports([ qw<like unlike diag note> ], [ ]);
+ }
+
+ {
+  local $@;
+  eval {
+   Test::Leaner->import(import => [ '!fail' ]);
+  };
+  Test::More::is($@, '', 'import "!fail" does not croak');
+  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 $@;
+  eval {
+   Test::Leaner->import(import => [ 'pass' ], import => [ '!fail' ]);
+  };
+  Test::More::is($@, '', 'import "pass", "!fail" does not croak');
+  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 $@;
+  eval {
+   Test::Leaner->import(import => [ 'fail' ], import => [ '!fail' ]);
+  };
+  Test::More::is($@, '', 'import "fail", "!fail" does not croak');
+  check_imports();
+ }
+}
+
+our @EXPORT = qw<
+ test_import_arg
+>;
+
+use Exporter ();
+
+sub import { goto &Exporter::import }
+
+1;