pythoningLearning
diff --git a/‎opc/package.py‎
Lines changed: 27 additions & 0 deletions b/‎opc/package.py‎
Lines changed: 27 additions & 0 deletions
diff --git a/‎tests/test_package.py‎
Lines changed: 14 additions & 1 deletion b/‎tests/test_package.py‎
Lines changed: 14 additions & 1 deletion
@@ -38,6 +38,33 @@ class Part(object):
     intended to be subclassed in client code to implement specific part
     behaviors.
     """
+    def __init__(self, partname, content_type, blob):
+        super(Part, self).__init__()
+        self._partname = partname
+        self._content_type = content_type
+        self._blob = blob
+
+    @property
+    def blob(self):
+        """
+        Contents of this package part as a sequence of bytes. May be text or
+        binary.
+        """
+        return self._blob
+
+    @property
+    def content_type(self):
+        """
+        Content type of this part.
+        """
+        return self._content_type
+
+    @property
+    def partname(self):
+        """
+        |PackURI| instance containing partname for this part.
+        """
+        return self._partname
 
 
 class PartFactory(object):
 
@@ -13,7 +13,7 @@
 
 from mock import call, Mock
 
-from opc.package import OpcPackage, PartFactory, Unmarshaller
+from opc.package import OpcPackage, Part, PartFactory, Unmarshaller
 
 from .unitutil import class_mock, method_mock
 
@@ -46,6 +46,19 @@ def it_can_open_a_pkg_file(self, PackageReader_, PartFactory_,
         assert isinstance(pkg, OpcPackage)
 
 
+class DescribePart(object):
+
+    def it_remembers_its_construction_state(self):
+        partname, content_type, blob = (
+            Mock(name='partname'), Mock(name='content_type'),
+            Mock(name='blob')
+        )
+        part = Part(partname, content_type, blob)
+        assert part.blob == blob
+        assert part.content_type == content_type
+        assert part.partname == partname
+
+
 class DescribePartFactory(object):
 
     @pytest.fixture