diff --git a/flask/app.py b/flask/app.py
index 51b50d34..efcc8ee0 100644
--- a/flask/app.py
+++ b/flask/app.py
@@ -2017,10 +2017,19 @@ class Flask(_PackageBoundObject):
     def test_request_context(self, *args, **kwargs):
         """Creates a WSGI environment from the given values (see
         :class:`werkzeug.test.EnvironBuilder` for more information, this
-        function accepts the same arguments).
+        function accepts the same arguments plus two additional).
+
+        Additional arguments (only if ``base_url`` is not specified):
+
+        :param subdomain: subdomain to use for route matching
+        :param url_scheme: scheme for the request, default
+            ``PREFERRED_URL_SCHEME`` or ``http``.
         """
+
         from flask.testing import make_test_environ_builder
+
         builder = make_test_environ_builder(self, *args, **kwargs)
+
         try:
             return self.request_context(builder.get_environ())
         finally:
diff --git a/flask/testing.py b/flask/testing.py
index 31600245..86e433bc 100644
--- a/flask/testing.py
+++ b/flask/testing.py
@@ -21,19 +21,37 @@ except ImportError:
     from urlparse import urlsplit as url_parse
 
 
-def make_test_environ_builder(app, path='/', base_url=None, *args, **kwargs):
+def make_test_environ_builder(
+    app, path='/', base_url=None, subdomain=None, url_scheme=None,
+    *args, **kwargs
+):
     """Creates a new test builder with some application defaults thrown in."""
-    http_host = app.config.get('SERVER_NAME')
-    app_root = app.config.get('APPLICATION_ROOT')
+
+    assert (
+        not (base_url or subdomain or url_scheme)
+        or (base_url is not None) != bool(subdomain or url_scheme)
+    ), 'Cannot pass "subdomain" or "url_scheme" with "base_url".'
+
     if base_url is None:
+        http_host = app.config.get('SERVER_NAME') or 'localhost'
+        app_root = app.config.get('APPLICATION_ROOT') or '/'
+
+        if subdomain:
+            http_host = '{0}.{1}'.format(subdomain, http_host)
+
+        if url_scheme is None:
+            url_scheme = app.config.get('PREFERRED_URL_SCHEME') or 'http'
+
         url = url_parse(path)
-        base_url = 'http://%s/' % (url.netloc or http_host or 'localhost')
-        if app_root:
-            base_url += app_root.lstrip('/')
-        if url.netloc:
-            path = url.path
-            if url.query:
-                path += '?' + url.query
+        base_url = '{0}://{1}/{2}'.format(
+            url_scheme, url.netloc or http_host, app_root.lstrip('/')
+        )
+        path = url.path
+
+        if url.query:
+            sep = b'?' if isinstance(url.query, bytes) else '?'
+            path += sep + url.query
+
     return EnvironBuilder(path, base_url, *args, **kwargs)
 
 
diff --git a/tests/test_testing.py b/tests/test_testing.py
index 7ec0c993..0c8ddebe 100644
--- a/tests/test_testing.py
+++ b/tests/test_testing.py
@@ -73,6 +73,38 @@ def test_environ_base_modified(app, client, app_ctx):
     assert flask.g.user_agent == 'Bar'
 
 
+def test_specify_url_scheme(app, client):
+    @app.route('/')
+    def index():
+        return flask.request.url
+
+    ctx = app.test_request_context(url_scheme='https')
+    assert ctx.request.url == 'https://localhost/'
+
+    rv = client.get('/', url_scheme='https')
+    assert rv.data == b'https://localhost/'
+
+
+def test_blueprint_with_subdomain(app, client):
+    app.config['SERVER_NAME'] = 'example.com:1234'
+    app.config['APPLICATION_ROOT'] = '/foo'
+
+    bp = flask.Blueprint('company', __name__, subdomain='xxx')
+
+    @bp.route('/')
+    def index():
+        return flask.request.url
+
+    app.register_blueprint(bp)
+
+    ctx = app.test_request_context('/', subdomain='xxx')
+    assert ctx.request.url == 'http://xxx.example.com:1234/foo/'
+    assert ctx.request.blueprint == bp.name
+
+    rv = client.get('/', subdomain='xxx')
+    assert rv.data == b'http://xxx.example.com:1234/foo/'
+
+
 def test_redirect_keep_session(app, client, app_ctx):
     app.secret_key = 'testing'