From f85338dcbcc93806ef6a8d7e43c690205c72e331 Mon Sep 17 00:00:00 2001
From: Rodrigo Castro <rodrigondec@gmail.com>
Date: Tue, 1 Sep 2020 14:34:43 -0300
Subject: [PATCH] =?UTF-8?q?Corrige=20serializa=C3=A7=C3=A3o=20de=20Configu?=
 =?UTF-8?q?rations=20(#11)?=
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* corrige serialização do configurations

* adiciona teste

* fmt
---
 imopay_wrapper/models/transaction.py               | 14 +++++++++-----
 .../transaction/test_invoice_configurations.py     | 10 ++++++++++
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/imopay_wrapper/models/transaction.py b/imopay_wrapper/models/transaction.py
index adf5b92..78413ea 100644
--- a/imopay_wrapper/models/transaction.py
+++ b/imopay_wrapper/models/transaction.py
@@ -44,11 +44,15 @@ def to_dict(self):
         Ao invés de solucionar isso, mais fácil sobreescrever o método
         no momento.
         """
-        data = {
-            "fine": self.fine.to_dict(),
-            "interest": self.interest.to_dict(),
-            "discounts": [discount.to_dict() for discount in self.discounts],
-        }
+        data = {}
+        if self.fine:
+            data["fine"] = self.fine.to_dict()
+
+        if self.interest:
+            data["interest"] = self.interest.to_dict()
+
+        if self.discounts:
+            data["discounts"] = [discount.to_dict() for discount in self.discounts]
         return data
 
 
diff --git a/tests/models/transaction/test_invoice_configurations.py b/tests/models/transaction/test_invoice_configurations.py
index 50da07b..83c0a50 100644
--- a/tests/models/transaction/test_invoice_configurations.py
+++ b/tests/models/transaction/test_invoice_configurations.py
@@ -19,3 +19,13 @@ def test_2(self):
             {"fine": {"value": 1, "type": "foo", "charge_type": "foo", "days": 0}}
         )
         self.assertEqual(t.fine.value, 1)
+
+    def test_3(self):
+        t = InvoiceConfigurations.from_dict(
+            {
+                "fine": Configuration.from_dict(
+                    {"value": 1, "type": "foo", "charge_type": "foo", "days": 0}
+                )
+            }
+        )
+        t.to_dict()