Test that AnySchema ignores allow_nil.

Since it already allow it...

test/any_schema_test.rb

@@ -59,4 +59,21 @@ def test_failed_validation_reset_sanitized_object
     assert_schema_invalidate(s, Object.new)
     assert_equal(nil, s.sanitized_object)
   end
+
+  def test_allow_nil
+    s = Respect::AnySchema.new(allow_nil: true)
+    assert_schema_validate s, nil
+    assert_equal(nil, s.sanitized_object)
+    assert_schema_validate s, 42
+    assert_equal(42, s.sanitized_object)
+  end
+
+  def test_disallow_nil
+    s = Respect::AnySchema.new
+    assert !s.allow_nil?
+    assert_schema_validate s, nil
+    assert_equal(nil, s.sanitized_object)
+    assert_schema_validate s, 42
+    assert_equal(42, s.sanitized_object)
+  end
 end