Add functional tests (#120)

* functional tests setup

* add a test case

ci/utils.py

@@ -0,0 +1,109 @@
+#coding: UTF-8
+
+import logging
+import os
+import re
+import sys
+from contextlib import contextmanager
+from os.path import abspath, basename, exists, expanduser, join
+from subprocess import PIPE, CalledProcessError, Popen
+
+import requests
+import termcolor
+
+try:
+    from functools import lru_cache
+except ImportError:
+    from backports.functools_lru_cache import lru_cache
+
+logger = logging.getLogger(__name__)
+
+
+def _color(s, color):
+    return s if not os.isatty(sys.stdout.fileno()) \
+        else termcolor.colored(str(s), color)
+
+
+def green(s):
+    return _color(s, 'green')
+
+
+def red(s):
+    return _color(s, 'red')
+
+
+def debug(fmt, *a):
+    logger.debug(green(fmt), *a)
+
+
+def info(fmt, *a):
+    logger.info(green(fmt), *a)
+
+
+def warning(fmt, *a):
+    logger.warn(red(fmt), *a)
+
+
+def shell(cmd, inputdata=None, wait=True, **kw):
+    info('calling "%s" in %s', cmd, kw.get('cwd', os.getcwd()))
+    kw['shell'] = not isinstance(cmd, list)
+    kw['stdin'] = PIPE if inputdata else None
+    p = Popen(cmd, **kw)
+    if inputdata:
+        p.communicate(inputdata)
+    if wait:
+        p.wait()
+        if p.returncode:
+            raise CalledProcessError(p.returncode, cmd)
+    else:
+        return p
+
+
+@contextmanager
+def cd(path):
+    olddir = os.getcwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(olddir)
+
+
+def chdir(func):
+    def wrapped(self, *w, **kw):
+        with cd(self.projectdir):
+            return func(self, *w, **kw)
+
+    return wrapped
+
+
+def setup_logging():
+    kw = {
+        'format': '[%(asctime)s][%(module)s]: %(message)s',
+        'datefmt': '%m/%d/%Y %H:%M:%S',
+        'level': logging.DEBUG,
+        'stream': sys.stdout,
+    }
+
+    logging.basicConfig(**kw)
+    logging.getLogger('requests.packages.urllib3.connectionpool'
+                      ).setLevel(logging.WARNING)
+
+
+def mkdirs(*paths):
+    for path in paths:
+        if not exists(path):
+            os.mkdir(path)
+
+def on_travis():
+    return 'TRAVIS_BUILD_NUMBER' in os.environ
+
+@contextmanager
+def cd(path):
+    path = expanduser(path)
+    olddir = os.getcwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(olddir)