add format interchange functions, add tests, fix stuff

tests/test_fields.py

@@ -1,17 +1,15 @@
 import unittest
-import decimal
 from pyaccuwage.fields import TextField
-from pyaccuwage.fields import IntegerField
-from pyaccuwage.fields import StateField
-from pyaccuwage.fields import BlankField
-from pyaccuwage.fields import ZeroField
-from pyaccuwage.fields import MoneyField
+# from pyaccuwage.fields import IntegerField
+# from pyaccuwage.fields import StateField
+# from pyaccuwage.fields import BlankField
+# from pyaccuwage.fields import ZeroField
+# from pyaccuwage.fields import MoneyField
 from pyaccuwage.fields import ValidationError
 from pyaccuwage.model import Model
 
 
 class TestTextField(unittest.TestCase):
-
     def testStringShortOptional(self):
         field = TextField(max_length=6, required=False)
         field.validate()  # optional
@@ -30,43 +28,6 @@ class TestTextField(unittest.TestCase):
     def testStringLongOptional(self):
         field = TextField(max_length=6, required=False)
         field.value = 'Hello, World!'  # too long
-        self.assertEqual(len(field.get_data()), field.max_length)
-
-
-class TestModelOutput(unittest.TestCase):
-    class TestModel(Model):
-        record_length = 128
-        record_identifier = 'TEST'  # 4 bytes
-        field1 = TextField(max_length=16)
-        field2 = IntegerField(max_length=16)
-        blank1 = BlankField(max_length=16)
-        zero1 = ZeroField(max_length=16)
-        money = MoneyField(max_length=32)
-        state_txt = StateField()
-        state_num = StateField(use_numeric=True)
-        blank2 = BlankField(max_length=24)
-
-    def setUp(self):
-        self.model = TestModelOutput.TestModel()
-
-    def testModelOutput(self):
-        model = self.model
-        model.field1.value = 'Hello, sir!'
-        model.field2.value = 12345
-        model.money.value = decimal.Decimal('1234.56')
-        model.state_txt.value = 'IA'
-        model.state_num.value = 'IA'
-
-        expected = b''.join([
-            b'TEST',
-            b'HELLO, SIR!'.ljust(16),
-            b'12345'.zfill(16),
-            b' ' * 16,
-            b'0' * 16,
-            b'123456'.zfill(32),
-            b'IA',
-            b'19',
-            b' ' * 24,
-            ])
-
-        self.assertEqual(model.output(), expected)
+        data = field.get_data()
+        self.assertEqual(len(data), field.max_length)
+        self.assertEqual(data, b'HELLO,')