fix coercion of ShallowAttributes values

lib/shallow_attributes/instance_methods.rb

@@ -139,7 +139,13 @@ def reset_attribute(attribute)
     #
     # @since 0.1.0
     def coerce(value, _options = {})
-      self.attributes = value
+      self.attributes =
+        if value.class.included_modules.include?(ShallowAttributes)
+          value.to_h
+        else
+          value
+        end
+
       self
     end
 

shallow_attributes.gemspec

@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_development_dependency "bundler", "~> 1.11"
+  spec.add_development_dependency "bundler", "> 1.11"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "minitest", "~> 5.0"
   spec.add_development_dependency "dry-types", "~> 0.11"

test/custom_types_test.rb

@@ -58,23 +58,22 @@ class Person
     end
 
     describe 'when one of attribute is array' do
-      let(:person) do
-        Person.new(
-          addresses: [
-            {
-              street: 'Street 1/2',
-              city: {
-                name: 'NYC'
-              }
-            },
-            {
-              street: 'Street 3/2',
-              city: {
-                name: 'Moscow'
-              }
-            }
-          ]
-        )
+      let(:person) { Person.new addresses: [address_1, address_2] }
+      let(:address_1) do
+        {
+          street: 'Street 1/2',
+          city: {
+            name: 'NYC'
+          }
+        }
+      end
+      let(:address_2) do
+        {
+          street: 'Street 3/2',
+          city: {
+            name: 'Moscow'
+          }
+        }
       end
 
       it 'allows embedded values' do
@@ -105,6 +104,35 @@ class Person
         person.addresses[0].must_be_instance_of Address
       end
 
+      describe 'array of ShallowAttributes objects' do
+        let(:address_1) do
+          Address.new(
+            street: 'Street 1/2',
+            city: {
+              name: 'NYC'
+            }
+          )
+        end
+        let(:address_2) do
+          Address.new(
+            street: 'Street 3/2',
+            city: {
+              name: 'Moscow'
+            }
+          )
+        end
+
+        it 'allows embedded ShallowAttributes objects' do
+          person.addresses.count.must_equal 2
+
+          person.addresses[0].street.must_equal 'Street 1/2'
+          person.addresses[0].city.name.must_equal 'NYC'
+
+          person.addresses[1].street.must_equal 'Street 3/2'
+          person.addresses[1].city.name.must_equal 'Moscow'
+        end
+      end
+
       describe '#attributes' do
         it 'returns attributes hash' do
           hash = person.attributes