def test_generate_using_tokens():
wc1 = WordCloud(random_state=42)
wc1.generate_from_words(wc1.tokenize(THIS))
wc2 = WordCloud(random_state=42)
wc2.generate(THIS)
assert_equal(wc1.words_, wc2.words_)
wc3 = WordCloud(random_state=42)
assert_raises(TypeError, wc3.generate, 3) #invalid data types
