Fix wrapper tests

[menshikh-iv]

After running all tests I found some problems

1. ldavw wrapper
   (replace assertEqual to assertAlmostEqual for second element)

Traceback (most recent call last):
  File "/home/ivan/release/test/gensim/gensim/test/test_ldavowpalwabbit_wrapper.py", line 223, in testvwmodel2ldamodel
    self.assertEqual(tm1[document][0], tm2[document][0])
AssertionError: Tuples differ: (1, 0.99731147) != (1, 0.99731144183873388)

First differing element 1:
0.99731147
0.99731144183873388

- (1, 0.99731147)
+ (1, 0.99731144183873388)
?              +++++ ++++

2. ldamallet wrapper
   (replace assertEqual to assertAlmostEqual for second element with places=1)

Traceback (most recent call last):
  File "/home/ivan/release/test/gensim/gensim/test/test_ldamallet_wrapper.py", line 110, in testMallet2Model
    self.assertEqual(tm1[document][0], tm2[document][0])
AssertionError: Tuples differ: (0, 0.5157232704402516) != (0, 0.50981136383330472)

First differing element 1:
0.5157232704402516
0.509811363833

- (0, 0.5157232704402516)
+ (0, 0.50981136383330472)

3. varembed wrapper
   (remove test because we don't support 2.6 from 1.0.0)

4. dtm wrapper

Traceback (most recent call last):
  File "/home/ivan/release/test/gensim/gensim/test/test_dtm.py", line 55, in testDim
    rng_seed=1)
  File "/home/ivan/release/test/gensim/gensim/models/wrappers/dtmmodel.py", line 96, in __init__
    if model == "fixed" and any([i == 0 for i in [len(text) for text in corpus.get_texts()]]):
AttributeError: 'MmCorpus' object has no attribute 'get_texts'

5. varembed wrapper

Traceback (most recent call last):
  File "/home/ivan/release/test/gensim/gensim/test/test_varembed_wrapper.py", line 56, in testAddMorphemesToEmbeddings
    vectors=varembed_model_vector_file, morfessor_model=varembed_model_morfessor_file)
  File "/home/ivan/release/test/gensim/gensim/models/wrappers/varembed.py", line 69, in load_varembed_format
    morfessor_model = morfessor.MorfessorIO().read_binary_model_file(morfessor_model)
  File "/home/ivan/.virtualenvs/clean-2.7/local/lib/python2.7/site-packages/morfessor/io.py", line 179, in read_binary_model_file
    model = pickle.load(fobj)
AttributeError: 'module' object has no attribute 'FixedCorpusWeight'

6. ldamallet wrapper (python 3 only)

Traceback (most recent call last):
  File "/home/ivan/release/test/gensim/gensim/test/test_ldamallet_wrapper.py", line 144, in testLargeMmap
    model = ldamallet.LdaMallet(self.mallet_path, self.corpus, num_topics=2, iterations=100)
  File "/home/ivan/release/test/gensim/gensim/models/wrappers/ldamallet.py", line 100, in __init__
    self.train(corpus)
  File "/home/ivan/release/test/gensim/gensim/models/wrappers/ldamallet.py", line 168, in train
    self.word_topics = self.load_word_topics()
  File "/home/ivan/release/test/gensim/gensim/models/wrappers/ldamallet.py", line 193, in load_word_topics
    word2id = dict((v, k) for k, v in iteritems(self.id2word))
  File "/home/ivan/.virtualenvs/clean-3.5/lib/python3.5/site-packages/six.py", line 581, in iteritems
    return iter(d.items(**kw))
AttributeError: 'FakeDict' object has no attribute 'items'

[tmylk]

Best way to test this fix is in the docker container in #1121

[shubhamdotjain]

In 4th, get_texts() is an attribute of wiki_corpus, not mmcorpus. Also mmcorpus doesn't have any similar attribute that would get the text from the document. How to go about this?

[menshikh-iv]

Fixed in PR1359