Fix zdoptions.test and dynamic_server_ports.test under PyPy by closing the files.

src/ZEO/tests/dynamic_server_ports.test

@@ -82,7 +82,8 @@ dynamic port using ZConfig, you'd use a hostname by itself. In this
 case, ZConfig passes None as the port.
 
     >>> import ZEO.runzeo
-    >>> r = open('conf', 'w').write("""
+    >>> with open('conf', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 127.0.0.1
     ... </zeo>
@@ -103,4 +104,3 @@ case, ZConfig passes None as the port.
 .. cleanup
 
     >>> ZODB.event.notify = old_notify
-

src/ZEO/tests/zdoptions.test

@@ -16,7 +16,8 @@ It is an error not to specify any storages:
     ...    from io import StringIO
     >>> stderr = sys.stderr
 
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>
@@ -37,7 +38,8 @@ It is an error not to specify any storages:
 
 But we can specify a storage without a name:
 
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>
@@ -52,7 +54,8 @@ But we can specify a storage without a name:
 We can't have multiple unnamed storages:
 
     >>> sys.stderr = StringIO()
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>
@@ -74,7 +77,8 @@ We can't have multiple unnamed storages:
 Or an unnamed storage and one named '1':
 
     >>> sys.stderr = StringIO()
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>
@@ -95,7 +99,8 @@ Or an unnamed storage and one named '1':
 
 But we can have multiple storages:
 
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    _ = f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>
@@ -112,7 +117,8 @@ But we can have multiple storages:
 As long as the names are unique:
 
     >>> sys.stderr = StringIO()
-    >>> r = open('config', 'w').write("""
+    >>> with open('config', 'w') as f:
+    ...    f.write("""
     ... <zeo>
     ...     address 8100
     ... </zeo>