Resolve some tests

[gitmo/Mouse.git] / t / 040_type_constraints / 005_util_type_coercion.t

diff --git a/t/040_type_constraints/005_util_type_coercion.t b/t/040_type_constraints/005_util_type_coercion.t
new file mode 100644 (file)
index 0000000..8755dcf
--- /dev/null
+++ b/t/040_type_constraints/005_util_type_coercion.t
@@ -0,0 +1,108 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Test::More tests => 26;
+use Test::Exception;
+
+use lib 't/lib';
+use Test::Mouse;
+
+BEGIN {
+       use_ok('Mouse::Util::TypeConstraints');
+}
+
+{
+    package HTTPHeader;
+    use Mouse;
+
+    has 'array' => (is => 'ro');
+    has 'hash'  => (is => 'ro');
+}
+
+subtype Header =>
+    => as Object
+    => where { $_->isa('HTTPHeader') };
+
+coerce Header
+    => from ArrayRef
+        => via { HTTPHeader->new(array => $_[0]) }
+    => from HashRef
+        => via { HTTPHeader->new(hash => $_[0]) };
+
+
+Mouse::Util::TypeConstraints->export_type_constraints_as_functions();
+
+my $header = HTTPHeader->new();
+isa_ok($header, 'HTTPHeader');
+
+ok(Header($header), '... this passed the type test');
+ok(!Header([]), '... this did not pass the type test');
+ok(!Header({}), '... this did not pass the type test');
+
+my $anon_type = subtype Object => where { $_->isa('HTTPHeader') };
+
+lives_ok {
+    coerce $anon_type
+        => from ArrayRef
+            => via { HTTPHeader->new(array => $_[0]) }
+        => from HashRef
+            => via { HTTPHeader->new(hash => $_[0]) };
+} 'coercion of anonymous subtype succeeds';
+
+=pod
+
+foreach my $coercion (
+    find_type_constraint('Header')->coercion,
+    $anon_type->coercion
+    ) {
+    isa_ok($coercion, 'Mouse::Meta::TypeCoercion');
+
+    {
+        my $coerced = $coercion->coerce([ 1, 2, 3 ]);
+        isa_ok($coerced, 'HTTPHeader');
+
+        is_deeply(
+            $coerced->array(),
+            [ 1, 2, 3 ],
+            '... got the right array');
+        is($coerced->hash(), undef, '... nothing assigned to the hash');
+    }
+
+    {
+        my $coerced = $coercion->coerce({ one => 1, two => 2, three => 3 });
+        isa_ok($coerced, 'HTTPHeader');
+
+        is_deeply(
+            $coerced->hash(),
+            { one => 1, two => 2, three => 3 },
+            '... got the right hash');
+        is($coerced->array(), undef, '... nothing assigned to the array');
+    }
+
+    {
+        my $scalar_ref = \(my $var);
+        my $coerced = $coercion->coerce($scalar_ref);
+        is($coerced, $scalar_ref, '... got back what we put in');
+    }
+
+    {
+        my $coerced = $coercion->coerce("Foo");
+        is($coerced, "Foo", '... got back what we put in');
+    }
+}
+
+=cut
+
+subtype 'StrWithTrailingX'
+    => as 'Str'
+    => where { /X$/ };
+
+coerce 'StrWithTrailingX'
+    => from 'Str'
+    => via { $_ . 'X' };
+
+my $tc = find_type_constraint('StrWithTrailingX');
+is($tc->coerce("foo"), "fooX", "coerce when needed");
+is($tc->coerce("fooX"), "fooX", "do not coerce when unneeded");