test: Add tests for JSONSerializer

test/typed/json_serializer_test.rb

@@ -15,15 +15,30 @@ def test_it_can_simple_serialize
     assert_equal('{"name":"Max","age":29}', @serializer.serialize(max))
   end
 
+  def test_it_can_serialize_with_nested_struct
+    hank = Person.new(name: "Hank", age: 38, job: Job.new(title: "Software Developer", salary: 90_000_00))
+
+    assert_equal('{"name":"Hank","age":38,"job":{"title":"Software Developer","salary":9000000}}', @serializer.serialize(hank))
+  end
+
   # Deserialize Tests
 
   def test_it_can_simple_deserialize
-    max_json = '{"name": "Max", "age": 29}'
+    hank_json = '{"name":"Hank","age":38,"job":{"title":"Software Developer","salary":9000000}}'
 
-    result = @serializer.deserialize(max_json)
+    result = @serializer.deserialize(hank_json)
+
+    assert_success(result)
+    assert_payload(Person.new(name: "Hank", age: 38, job: Job.new(title: "Software Developer", salary: 90_000_00)), result)
+  end
+
+  def test_it_can_deserialize_with_nested_object
+    hank_json = '{"name":"Hank","age":38,"job":{"title":"Software Developer","salary":9000000}}'
+
+    result = @serializer.deserialize(hank_json)
 
     assert_success(result)
-    assert_payload(Person.new(name: "Max", age: 29), result)
+    assert_payload(Person.new(name: "Hank", age: 38, job: Job.new(title: "Software Developer", salary: 90_000_00)), result)
   end
 
   def test_it_reports_on_parse_errors_on_deserialize