tests: add `dask`

environment.yml

@@ -25,6 +25,7 @@ dependencies:
 - flake8-comprehensions
 - coverage
 # extras
+- dask               # dask
 - matplotlib         # gui
 - numpy              # pandas, keras, contrib.tenumerate
 - pandas

tests/tests_dask.py

@@ -0,0 +1,19 @@
+from __future__ import division
+
+from time import sleep
+
+from .tests_tqdm import importorskip, mark
+
+pytestmark = mark.slow
+
+
+def test_dask(capsys):
+    """Test tqdm.dask.TqdmCallback"""
+    ProgressBar = importorskip('tqdm.dask').TqdmCallback
+    dask = importorskip('dask')
+
+    schedule = [dask.delayed(sleep)(i / 10) for i in range(5)]
+    with ProgressBar():
+        dask.compute(schedule)
+    _, err = capsys.readouterr()
+    assert '5/5' in err

tox.ini

@@ -27,6 +27,7 @@ passenv=TOXENV CI GITHUB_* CODECOV_* COVERALLS_* CODACY_* HOME
 deps=
     {[core]deps}
     cython
+    dask[delayed]
     matplotlib
     numpy
     pandas