working fs replacement enabling use case testing.

papers content was mostly moved to papers_cmd.py
You can now use papers_cmd.execute('papers tag Page99'.split()) from the code

papers/papers

@@ -1,50 +1,5 @@
 #!/usr/bin/env python2
 # -*- coding:utf-8 -*-
 
-
-import argparse
-import collections
-
-from papers.ui import UI
-from papers import configs
-from papers import commands
-from papers import plugin
-
-cmds = collections.OrderedDict([
-        ('init',        commands.init_cmd),
-        ('add',         commands.add_cmd),
-        ('add_library', commands.add_library_cmd),
-        ('import',      commands.import_cmd),
-        ('export',      commands.export_cmd),
-        ('list',        commands.list_cmd),
-        ('edit',        commands.edit_cmd),
-        ('remove',      commands.remove_cmd),
-        ('open',        commands.open_cmd),
-        ('websearch',   commands.websearch_cmd),
-        ('tag',         commands.tag_cmd),
-        ('attach',      commands.attach_cmd),
-        ('update',      commands.update_cmd),
-        ])
-
-config = configs.read_config()
-ui = UI(config)
-
-# Extend with plugin commands
-plugin.load_plugins(config, ui, configs.get_plugins(config))
-for p in plugin.get_plugins().values():
-    cmds.update(collections.OrderedDict([(p.name, p)]))
-#
-
-parser = argparse.ArgumentParser(description="research papers repository")
-subparsers = parser.add_subparsers(title="valid commands", dest="command")
-
-for cmd_mod in cmds.values():
-    subparser = cmd_mod.parser(subparsers, config)  # why do we return the subparser ?
-
-args = parser.parse_args()
-args.config = config
-args.ui = ui
-cmd = args.command
-del args.command
-
-cmds[cmd].command(**vars(args))
+import papers_cmd
+papers_cmd.execute()

papers/papers_cmd.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python2
+# -*- coding:utf-8 -*-
+import sys
+
+import argparse
+import collections
+
+from .ui import UI
+from . import configs
+from . import commands
+from . import plugin
+
+cmds = collections.OrderedDict([
+        ('init',        commands.init_cmd),
+        ('add',         commands.add_cmd),
+        ('add_library', commands.add_library_cmd),
+        ('import',      commands.import_cmd),
+        ('export',      commands.export_cmd),
+        ('list',        commands.list_cmd),
+        ('edit',        commands.edit_cmd),
+        ('remove',      commands.remove_cmd),
+        ('open',        commands.open_cmd),
+        ('websearch',   commands.websearch_cmd),
+        ('tag',         commands.tag_cmd),
+        ('attach',      commands.attach_cmd),
+        ('update',      commands.update_cmd),
+        ])
+
+config = configs.read_config()
+ui = UI(config)
+
+# Extend with plugin commands
+plugin.load_plugins(config, ui, configs.get_plugins(config))
+for p in plugin.get_plugins().values():
+    cmds.update(collections.OrderedDict([(p.name, p)]))
+#
+
+parser = argparse.ArgumentParser(description="research papers repository")
+subparsers = parser.add_subparsers(title="valid commands", dest="command")
+
+for cmd_mod in cmds.values():
+    subparser = cmd_mod.parser(subparsers, config)  # why do we return the subparser ?
+
+def execute(raw_args = sys.argv):
+    args = parser.parse_args(raw_args[1:])
+    args.config = config
+    args.ui = ui
+    cmd = args.command
+    del args.command
+
+    cmds[cmd].command(**vars(args))

tests/test_usecase.py

@@ -0,0 +1,36 @@
+import sys, os
+import unittest
+import pkgutil
+
+import testenv
+import fake_filesystem
+
+import papers
+from papers import papers_cmd
+
+def create_fake_fs():
+    fake_fs = fake_filesystem.FakeFilesystem()
+    fake_os = fake_filesystem.FakeOsModule(fake_fs)
+    fake_open = fake_filesystem.FakeFileOpen(fake_fs)
+    fake_fs.CreateFile('/Users/fabien/bla')
+    __builtins__['open'] = fake_open
+    __builtins__['file'] = fake_open
+
+    for importer, modname, ispkg in pkgutil.walk_packages(path=papers.__path__,
+                                                      prefix=papers.__name__+'.',
+                                                      onerror=lambda x: None):
+        md = __import__(modname, fromlist = 'dummy')
+        md.os = fake_os
+
+
+class TestUseCases(unittest.TestCase):
+
+    def test_init(self):
+        create_fake_fs()
+        papers_md.execute_papers('papers init -p paper_test2'.split())
+
+    def test_init(self):
+        create_fake_fs()
+        papers_cmd.execute('papers init -p paper_test2'.split())
+
+