Fix slash in previous commit

bwscanner/measurement.py

@@ -44,6 +44,9 @@ def __init__(self, state, clock, measurement_dir, **kwargs):
         self.tasks = []
         self.circuits = None
         self.baseurl = kwargs.get('baseurl')
+        # test does not use baseurl
+        if self.baseurl is not None:
+            assert self.baseurl.endswith('/')
         self.bw_files = kwargs.get('bw_files')
         self.result_sink = ResultSink(self.measurement_dir, chunk_size=10)
 
@@ -64,7 +67,7 @@ def choose_file_size(self, path):
         return max(self.bw_files.keys())
 
     def choose_url(self, path):
-        return self.baseurl + '/' + self.bw_files[self.choose_file_size(path)][0]
+        return self.baseurl + self.bw_files[self.choose_file_size(path)][0]
 
     def run_scan(self):
         all_done = defer.Deferred()

test/test_measurement.py

@@ -40,7 +40,7 @@ def test_scan_chutney(self):
         # check that each run is producing the same input set!
         self.tmp = mkdtemp()
         scan = BwScan(self.tor_state, reactor, self.tmp)
-        scan.baseurl = 'http://127.0.0.1:{}'.format(self.port)
+        scan.baseurl = 'http://127.0.0.1:{}/'.format(self.port)
         # FIXME: to simplify test, use same data and hash, no matter what the file size is
         scan.bw_files = {
             64*1024: ("64M", '86f7e437faa5a7fce15d1ddcb9eaeaea377667b8'),