add tests for reloading module

prepare test fixtures consisting of a package and module with relative & absolute import
test scripting server runs with these variations
- from package or from module
- with or without reloader
the server code is based off servertest.py

Author: lmmarsano

test/servertestpackage/__init__.py

@@ -0,0 +1,38 @@
+import sys, os, socket
+
+import servertestpackage.absolute
+from . import relative
+
+test_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+os.chdir(test_root)
+sys.path.insert(0, os.path.dirname(test_root))
+sys.path.insert(0, test_root)
+
+try:
+    server = sys.argv[1]
+    port   = int(sys.argv[2])
+    reloads= '--reload' in sys.argv
+
+    if server == 'gevent':
+        from gevent import monkey
+        monkey.patch_all()
+    elif server == 'eventlet':
+        import eventlet
+        eventlet.monkey_patch()
+
+    try:
+        import coverage
+        coverage.process_startup()
+    except ImportError:
+        pass
+
+    from bottle import route, run
+    route('/test', callback=relative.test_handler)
+    run(reloader=reloads, port=port, server=server, quiet=True)
+
+except socket.error:
+    sys.exit(3)
+except ImportError:
+    sys.exit(128)
+except KeyboardInterrupt:
+    pass

test/servertestpackage/__main__.py

@@ -0,0 +1 @@
+__main__.py

test/servertestpackage/absolute.py

@@ -0,0 +1,2 @@
+def test_handler():
+  return 'OK'

test/servertestpackage/module.py

@@ -14,8 +14,7 @@
 except:
     from urllib2 import urlopen
 
-serverscript = os.path.join(os.path.dirname(__file__), 'servertest.py')
-
+test_root = os.path.dirname(os.path.abspath(__file__))
 
 def ping(server, port):
     ''' Check if a server accepts connections on a specific TCP port '''
@@ -28,10 +27,14 @@ def ping(server, port):
     finally:
         s.close()
 
-
-class TestServer(unittest.TestCase):
+class TestServerBase(unittest.TestCase):
     server = 'wsgiref'
     skip   = False
+    script = []
+    extra_args = []
+
+    def base_cmd(self, port):
+        return [sys.executable] + self.script + [self.server, str(port)] + self.extra_args
 
     def setUp(self):
         self.skip = self.skip or 'fast' in sys.argv
@@ -40,9 +43,8 @@ def setUp(self):
         for port in range(8800, 8900):
             self.port = port
             # Start servertest.py in a subprocess
-            cmd = [sys.executable, serverscript, self.server, str(port)]
-            cmd += sys.argv[1:] # pass cmdline arguments to subprocesses
-            self.p = Popen(cmd, stdout=PIPE, stderr=PIPE)
+            cmd = self.base_cmd(port) + sys.argv[1:] # pass cmdline arguments to subprocesses
+            self.p = Popen(cmd, stdout=PIPE, stderr=PIPE, cwd=test_root)
             # Wait for the socket to accept connections
             for i in range(100):
                 time.sleep(0.1)
@@ -92,11 +94,25 @@ def fetch(self, url):
         except Exception as E:
             return repr(E)
 
+class TestServer(TestServerBase):
+    script = [os.path.join(os.path.dirname(__file__), 'servertest.py')]
+
     def test_simple(self):
         ''' Test a simple static page with this server adapter. '''
         if self.skip: return
         self.assertEqual(tob('OK'), self.fetch('test'))
 
+class TestServerPackage(TestServer):
+    script = ['-m', 'servertestpackage']
+
+class TestServerPackageReloader(TestServerPackage):
+    extra_args = ['--reload']
+
+class TestServerModule(TestServerPackage):
+    script = ['-m', 'servertestpackage.module']
+
+class TestServerModuleReloader(TestServerModule):
+    extra_args = ['--reload']
 
 blacklist = ['cgi', 'flup', 'gae', 'wsgiref']
 blacklist += ['fapws3', 'cherrypy', 'diesel'] # deprecated adapters