do not use Undef-Tolerant behaviour on attributes that are capable of handling undef

[gitmo/MooseX-UndefTolerant.git] / t / constructor.t

diff --git a/t/constructor.t b/t/constructor.t
index 96b27a2..e97766e 100644 (file)
--- a/t/constructor.t
+++ b/t/constructor.t
@@ -1,9 +1,7 @@
-use Test::More tests => 14;
+#use Test::More;
+use Test::Most 'die';
 use Test::Fatal;
 
-# TODO: this test should be renamed constructor.t, since all it tests is
-# UT behaviour during construction.
-
 {
     package Foo;
     use Moose;
@@ -14,12 +12,16 @@ use Test::Fatal;
         isa => 'Num',
         predicate => 'has_attr1',
     );
-
     has 'attr2' => (
         is => 'ro',
         isa => 'Num',
         predicate => 'has_attr2',
     );
+    has 'attr3' => (
+        is => 'ro',
+        isa => 'Maybe[Num]',
+        predicate => 'has_attr3',
+    );
 }
 
 {
@@ -37,55 +39,101 @@ use Test::Fatal;
         isa => 'Num',
         predicate => 'has_attr2',
     );
+    has 'attr3' => (
+        is => 'ro',
+        isa => 'Maybe[Num]',
+        predicate => 'has_attr3',
+    );
 }
 
 package main;
 
-note 'Constructor behaviour';
-note '';
-
-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');
-}
-
+sub do_tests
 {
-    my $obj = Foo->new(attr1 => undef);
-    ok(!$obj->has_attr1, 'UT attr1 has no value when assigned undef in constructor');
-    ok (exception { $obj = Foo->new(attr2 => undef) },
-        'But assigning undef to attr2 generates a type constraint error');
-}
-
-{
-    my $obj = Foo->new(attr1 => 1234, attr2 => 5678);
-    is($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');
+    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');
+    }
+
+    {
+        my $obj = Foo->new(attr1 => undef);
+        ok(!$obj->has_attr1, 'UT attr1 has no value when assigned undef in constructor');
+        isnt (exception { $obj = Foo->new(attr2 => undef) }, undef,
+            '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');
+    }
+
+    {
+        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');
+    }
 }
 
 
+note 'Constructor behaviour: mutable classes';
 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');
-}
+do_tests;
 
-{
-    my $obj = Bar->new(attr1 => undef);
-    ok(!$obj->has_attr1, 'attr1 has no value when assigned undef in constructor');
-    ok (!exception { $obj = Bar->new(attr2 => undef) },
-        'assigning undef to attr2 does not produce an error');
-    ok(!$obj->has_attr2, 'attr2 has no value when assigned undef in constructor');
-}
-
-{
-    my $obj = Bar->new(attr1 => 1234);
-    is($obj->attr1, 1234, 'assigning a defined value during construction works as normal');
-    ok($obj->has_attr1, '...and the predicate returns true as normal');
+note '';
+note 'Constructor behaviour: immutable classes';
+note '';
+Foo->meta->make_immutable;
+Bar->meta->make_immutable;
+TODO: {
+    local $TODO = 'some immutable cases are not handled yet';
+    # for now, catch errors
+    is(exception { do_tests }, undef, 'tests do not die');
+
+    is(Test::More->builder->current_test, 28, 'if we got here, we can declare victory!');
 }
 
+done_testing;