pulled these test cases into a separate lib so they can be shared

[gitmo/MooseX-UndefTolerant.git] / t / lib / ConstructorTests.pm

diff --git a/t/lib/ConstructorTests.pm b/t/lib/ConstructorTests.pm
new file mode 100644 (file)
index 0000000..340e2f7
--- /dev/null
+++ b/t/lib/ConstructorTests.pm
@@ -0,0 +1,137 @@
+package # hide from PAUSE
+    ConstructorTests;
+
+{
+    package Foo;
+    use Moose;
+
+    has 'attr1' => (
+        traits => [ qw(MooseX::UndefTolerant::Attribute)],
+        is => 'ro',
+        isa => 'Num',
+        predicate => 'has_attr1',
+    );
+    has 'attr2' => (
+        is => 'ro',
+        isa => 'Num',
+        predicate => 'has_attr2',
+    );
+    has 'attr3' => (
+        is => 'ro',
+        isa => 'Maybe[Num]',
+        predicate => 'has_attr3',
+    );
+}
+
+{
+    package Bar;
+    use Moose;
+    use MooseX::UndefTolerant;
+
+    has 'attr1' => (
+        is => 'ro',
+        isa => 'Num',
+        predicate => 'has_attr1',
+    );
+    has 'attr2' => (
+        is => 'ro',
+        isa => 'Num',
+        predicate => 'has_attr2',
+    );
+    has 'attr3' => (
+        is => 'ro',
+        isa => 'Maybe[Num]',
+        predicate => 'has_attr3',
+    );
+}
+
+package # hide from PAUSE
+    ConstructorTests;
+
+use strict;
+use warnings;
+
+use Test::More;
+use Test::Fatal;
+
+sub do_tests
+{
+    note 'Testing class with a single UndefTolerant attribute';
+    {
+        my $obj = Foo->new;
+        ok(!$obj->has_attr1, 'attr1 has no value before it is assigned');
+        ok(!$obj->has_attr2, 'attr2 has no value before it is assigned');
+        ok(!$obj->has_attr3, 'attr3 has no value before it is assigned');
+    }
+
+    TODO: {
+        local $TODO;
+        $TODO = 'some immutable cases are not handled yet; see CAVEATS' if Foo->meta->is_immutable;
+        is(
+            exception {
+
+                my $obj = Foo->new(attr1 => undef);
+                ok(!$obj->has_attr1, 'UT attr1 has no value when assigned undef in constructor');
+                like(
+                    exception { $obj = Foo->new(attr2 => undef) },
+                    qr/\QAttribute (attr2) does not pass the type constraint because: Validation failed for 'Num' with value undef\E/,
+                    'But assigning undef to attr2 generates a type constraint error');
+
+                is (exception { $obj = Foo->new(attr3 => undef) }, undef,
+                    'assigning undef to attr3 is acceptable');
+                ok($obj->has_attr3, 'attr3 retains its undef value when assigned undef in constructor');
+            },
+            undef,
+            'successfully tested spot-applicaction of UT trait in immutable classes',
+        );
+    }
+
+    {
+        my $obj = Foo->new(attr1 => 1234, attr2 => 5678, attr3 => 9012);
+        is($obj->attr1, 1234, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr1, '...and the predicate returns true as normal');
+
+        is($obj->attr2, 5678, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr2, '...and the predicate returns true as normal');
+
+        is($obj->attr3, 9012, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr3, '...and the predicate returns true as normal');
+    }
+
+
+    note '';
+    note 'Testing class with the entire class being UndefTolerant';
+    {
+        my $obj = Bar->new;
+        ok(!$obj->has_attr1, 'attr1 has no value before it is assigned');
+        ok(!$obj->has_attr2, 'attr2 has no value before it is assigned');
+        ok(!$obj->has_attr3, 'attr3 has no value before it is assigned');
+    }
+
+    {
+        my $obj = Bar->new(attr1 => undef);
+        ok(!$obj->has_attr1, 'attr1 has no value when assigned undef in constructor');
+        # note this test differs from the Foo case above
+        is (exception { $obj = Bar->new(attr2 => undef) }, undef,
+            'assigning undef to attr2 does not produce an error');
+        ok(!$obj->has_attr2, 'attr2 has no value when assigned undef in constructor');
+
+        is( exception { $obj = Foo->new(attr3 => undef) }, undef,
+            'assigning undef to attr3 is acceptable');
+        ok($obj->has_attr3, 'attr3 retains its undef value when assigned undef in constructor');
+    }
+
+    {
+        my $obj = Bar->new(attr1 => 1234, attr2 => 5678, attr3 => 9012);
+        is($obj->attr1, 1234, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr1, '...and the predicate returns true as normal');
+
+        is($obj->attr2, 5678, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr2, '...and the predicate returns true as normal');
+
+        is($obj->attr3, 9012, 'assigning a defined value during construction works as normal');
+        ok($obj->has_attr3, '...and the predicate returns true as normal');
+    }
+}
+
+1;