Enable test_word2vec_stand_alone_script by using sys.executable for p…

…ython

gensim/test/test_word2vec.py

@@ -14,6 +14,7 @@
 import bz2
 import sys
 import tempfile
+import subprocess
 
 import numpy as np
 
@@ -1162,15 +1163,15 @@ def test_path_line_sentences_one_file(self):
 
 # endclass TestWord2VecSentenceIterators
 
-# TODO: get correct path to Python binary
-# class TestWord2VecScripts(unittest.TestCase):
-#     def test_word2vec_stand_alone_script(self):
-#         """Does Word2Vec script launch standalone?"""
-#         cmd = 'python -m gensim.scripts.word2vec_standalone -train ' + datapath('testcorpus.txt') + \
-#               ' -output vec.txt -size 200 -sample 1e-4 -binary 0 -iter 3 -min_count 1'
-#         output = check_output(cmd, stderr=PIPE)
-#         self.assertEqual(output, '0')
-# #endclass TestWord2VecScripts
+class TestWord2VecScripts(unittest.TestCase):
+    def test_word2vec_stand_alone_script(self):
+        """Does Word2Vec script launch standalone?"""
+        cmd = [sys.executable, '-m', 'gensim.scripts.word2vec_standalone', '-train', datapath('testcorpus.txt')] + \
+	       '-output vec.txt -size 200 -sample 1e-4 -binary 0 -iter 3 -min_count 1'.split()
+        output = check_output(args=cmd, stderr=subprocess.PIPE)
+        self.assertEqual(output, '0')
+
+#endclass TestWord2VecScripts
 
 
 if not hasattr(TestWord2VecModel, 'assertLess'):