Run ZEO server tests while backed with a BlobStorage-adapted FileStorage.

Assert that blobs implement IBlob.

branches/ctheune-blobsupport/src/ZEO/tests/testZEO.py

@@ -201,7 +201,32 @@ class MappingStorageTests(GenericTests):
     def getConfig(self):
         return """<mappingstorage 1/>"""
 
-test_classes = [FileStorageTests, MappingStorageTests]
+class BlobAdaptedFileStorageTests(GenericTests):
+    """ZEO backed by a BlobStorage-adapted FileStorage."""
+    def setUp(self):
+        self.blobdir = tempfile.mkdtemp()
+        super(BlobAdaptedFileStorageTests, self).setUp()
+        
+    def tearDown(self):
+        import shutil
+        shutil.rmtree(self.blobdir)
+        super(BlobAdaptedFileStorageTests, self).tearDown()
+
+    def getConfig(self):
+        return """
+        <blobstorage 1>
+          blob-dir %s
+          <filestorage 2>
+            path %s
+          </filestorage>
+        </blobstorage>
+        """ % (self.blobdir, tempfile.mktemp())
+
+    def checkStoreBlob(self):
+        pass  
+
+test_classes = [FileStorageTests, MappingStorageTests,
+                BlobAdaptedFileStorageTests]
 
 def test_suite():
     suite = unittest.TestSuite()

branches/ctheune-blobsupport/src/ZODB/Blobs/Blob.txt

@@ -20,6 +20,12 @@ You create a blob like this:
     >>> from ZODB.Blobs.Blob import Blob
     >>> myblob = Blob()
 
+A blob implements the IBlob interface:
+
+    >>> from ZODB.Blobs.interfaces import IBlob
+    >>> IBlob.providedBy(myblob)
+    True
+
 Opening a new Blob for reading fails:
 
     >>> myblob.open("r")