TST: use a fixed seed to have the same uniques across python versions (#25346)

TST: add pytest-mock to handle mocker fixture
(cherry picked from commit 4a20d5b)

Author: jreback

ci/deps/azure-27-compat.yaml

@@ -20,6 +20,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - pip:
     - html5lib==1.0b2
     - beautifulsoup4==4.2.1

ci/deps/azure-27-locale.yaml

@@ -22,6 +22,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - hypothesis>=3.58.0
   - pip:
     - html5lib==1.0b2

ci/deps/azure-36-locale_slow.yaml

@@ -28,6 +28,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - moto
   - pip:
     - hypothesis>=3.58.0

ci/deps/azure-37-locale.yaml

@@ -27,6 +27,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - pip:
     - hypothesis>=3.58.0
     - moto  # latest moto in conda-forge fails with 3.7, move to conda dependencies when this is fixed

ci/deps/azure-37-numpydev.yaml

@@ -8,6 +8,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - hypothesis>=3.58.0
   - pip:
     - "git+git://github.com/dateutil/dateutil.git"

ci/deps/azure-macos-35.yaml

@@ -24,6 +24,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - pip:
     - python-dateutil==2.5.3
     - hypothesis>=3.58.0

ci/deps/azure-windows-27.yaml

@@ -27,5 +27,6 @@ dependencies:
   - cython>=0.28.2
   - pytest
   - pytest-xdist
+  - pytest-mock
   - moto
   - hypothesis>=3.58.0

ci/deps/azure-windows-36.yaml

@@ -25,4 +25,5 @@ dependencies:
   - cython>=0.28.2
   - pytest
   - pytest-xdist
+  - pytest-mock
   - hypothesis>=3.58.0

ci/deps/travis-27.yaml

@@ -41,6 +41,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - moto==1.3.4
   - hypothesis>=3.58.0
   - pip:

ci/deps/travis-36-locale.yaml

@@ -30,6 +30,7 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - moto
   - pip:
     - hypothesis>=3.58.0

ci/deps/travis-36-slow.yaml

@@ -27,5 +27,6 @@ dependencies:
   # universal
   - pytest
   - pytest-xdist
+  - pytest-mock
   - moto
   - hypothesis>=3.58.0

ci/deps/travis-36.yaml

@@ -36,6 +36,7 @@ dependencies:
   - pytest
   - pytest-xdist
   - pytest-cov
+  - pytest-mock
   - hypothesis>=3.58.0
   - pip:
     - brotlipy

ci/deps/travis-37.yaml

@@ -14,6 +14,7 @@ dependencies:
   - pytz
   - pytest
   - pytest-xdist
+  - pytest-mock
   - hypothesis>=3.58.0
   - s3fs
   - pip:

pandas/tests/io/formats/test_console.py

@@ -78,13 +78,12 @@ def test_detect_console_encoding_fallback_to_default(monkeypatch, std, locale):
 
 
 @pytest.mark.parametrize("size", ['', ['']])
-def test_terminal_unknown_dimensions(monkeypatch, size):
-    mock = pytest.importorskip("unittest.mock")
+def test_terminal_unknown_dimensions(monkeypatch, size, mocker):
 
     def communicate(*args, **kwargs):
         return size
 
-    monkeypatch.setattr('subprocess.Popen', mock.Mock())
+    monkeypatch.setattr('subprocess.Popen', mocker.Mock())
     monkeypatch.setattr('subprocess.Popen.return_value.returncode', None)
     monkeypatch.setattr(
         'subprocess.Popen.return_value.communicate', communicate)

pandas/tests/resample/test_datetime_index.py

@@ -1209,9 +1209,13 @@ def test_resample_nunique_with_date_gap():
 @pytest.mark.parametrize('k', [10, 100, 1000])
 def test_resample_group_info(n, k):
     # GH10914
+
+    # use a fixed seed to always have the same uniques
+    prng = np.random.RandomState(1234)
+
     dr = date_range(start='2015-08-27', periods=n // 10, freq='T')
-    ts = Series(np.random.randint(0, n // k, n).astype('int64'),
-                index=np.random.choice(dr, n))
+    ts = Series(prng.randint(0, n // k, n).astype('int64'),
+                index=prng.choice(dr, n))
 
     left = ts.resample('30T').nunique()
     ix = date_range(start=ts.index.min(), end=ts.index.max(),