Test for writing and removing server info files

IPython/html/tests/test_notebookapp.py

@@ -14,6 +14,7 @@
 import nose.tools as nt
 
 import IPython.testing.tools as tt
+from IPython.html import notebookapp
 
 #-----------------------------------------------------------------------------
 # Test functions
@@ -23,3 +24,18 @@ def test_help_output():
     """ipython notebook --help-all works"""
     tt.help_all_output_test('notebook')
 
+def test_server_info_file():
+    nbapp = notebookapp.NotebookApp(profile='nbserver_file_test')
+    def get_servers():
+        return list(notebookapp.discover_running_servers(profile='nbserver_file_test'))
+    nbapp.initialize(argv=[])
+    nbapp.write_server_info_file()
+    servers = get_servers()
+    nt.assert_equal(len(servers), 1)
+    nt.assert_equal(servers[0]['port'], nbapp.port)
+    nt.assert_equal(servers[0]['url'], nbapp.connection_url)
+    nbapp.remove_server_info_file()
+    nt.assert_equal(get_servers(), [])
+
+    # The ENOENT error should be silenced.
+    nbapp.remove_server_info_file()