TST: raise nose.SkipTest -> pytest.skip

TST: remove KnownFailure (unused), should be replaced by pytest.xfail anyhow

TST: remove nose

xref pandas-dev#15341

Author: jreback

.travis.yml

@@ -331,5 +331,5 @@ after_script:
   - echo "after_script start"
   - ci/install_test.sh
   - source activate pandas && python -c "import pandas; pandas.show_versions();"
-  - ci/print_skipped.py /tmp/nosetests.xml
+  - ci/print_skipped.py /tmp/pytest.xml
   - echo "after_script done"

ci/install_test.sh

@@ -8,7 +8,6 @@ if [ "$INSTALL_TEST" ]; then
     conda uninstall cython || exit 1
     python "$TRAVIS_BUILD_DIR"/setup.py sdist --formats=zip,gztar || exit 1
     pip install "$TRAVIS_BUILD_DIR"/dist/*tar.gz || exit 1
-    # nosetests --exe -A "$TEST_ARGS" pandas/tests/test_series.py --with-xunit --xunit-file=/tmp/nosetests_install.xml
     pytest pandas/tests/test_series.py --junitxml=/tmp/pytest_install.xml
 else
     echo "Skipping installation test."

ci/install_travis.sh

@@ -92,12 +92,7 @@ if [ -e ${INSTALL} ]; then
     time bash $INSTALL || exit 1
 else
     # create new env
-    time conda create -n pandas python=$PYTHON_VERSION nose pytest || exit 1
-
-    if [ "$LINT" ]; then
-        conda install flake8
-        pip install cpplint
-    fi
+    time conda create -n pandas python=$PYTHON_VERSION pytest || exit 1
 fi
 
 # build deps
@@ -116,6 +111,12 @@ fi
 
 source activate pandas
 
+pip install pytest-xdist
+if [ "$LINT" ]; then
+   conda install flake8
+   pip install cpplint
+fi
+
 if [ "$COVERAGE" ]; then
     pip install coverage pytest-cov
 fi

ci/lint.sh

@@ -55,7 +55,7 @@ if [ "$LINT" ]; then
     echo "Linting *.c and *.h DONE"
 
     echo "Check for invalid testing"
-    grep -r -E --include '*.py' --exclude nosetester.py --exclude testing.py '(numpy|np)\.testing' pandas
+    grep -r -E --include '*.py' --exclude testing.py '(numpy|np)\.testing' pandas
     if [ $? = "0" ]; then
         RET=1
     fi

ci/requirements_all.txt

@@ -1,6 +1,6 @@
-nose
 pytest
 pytest-cov
+pytest-xdist
 flake8
 sphinx
 ipython

ci/requirements_dev.txt

@@ -2,7 +2,7 @@ python-dateutil
 pytz
 numpy
 cython
-nose
 pytest
 pytest-cov
+pytest-xdist
 flake8

ci/script.sh

@@ -18,10 +18,10 @@ if [ -n "$LOCALE_OVERRIDE" ]; then
 fi
 
 if [ "$BUILD_TEST" ]; then
-    echo "We are not running nosetests as this is simply a build test."
+    echo "We are not running pytest as this is simply a build test."
 elif [ "$COVERAGE" ]; then
-    echo pytest -s --cov=pandas --cov-report xml:/tmp/nosetests.xml $TEST_ARGS pandas
-    pytest -s --cov=pandas --cov-report xml:/tmp/nosetests.xml $TEST_ARGS pandas
+    echo pytest -s --cov=pandas --cov-report xml:/tmp/pytest.xml $TEST_ARGS pandas
+    pytest -s --cov=pandas --cov-report xml:/tmp/pytest.xml $TEST_ARGS pandas
 else
     echo pytest $TEST_ARGS pandas
     pytest $TEST_ARGS pandas # TODO: doctest

doc/source/contributing.rst

@@ -734,7 +734,7 @@ gbq integration tests on a forked repository:
    the status by visiting your Travis branches page which exists at the
    following location: https://travis-ci.org/your-user-name/pandas/branches .
    Click on a build job for your branch. Expand the following line in the
-   build log: ``ci/print_skipped.py /tmp/nosetests.xml`` . Search for the
+   build log: ``ci/print_skipped.py /tmp/pytest.xml`` . Search for the
    term ``test_gbq`` and confirm that gbq integration tests are not skipped.
 
 Running the vbench performance test suite (phasing out)

pandas/computation/tests/test_compat.py

@@ -1,7 +1,7 @@
 
 # flake8: noqa
 
-import nose
+import pytest
 from itertools import product
 from distutils.version import LooseVersion
 
@@ -31,7 +31,7 @@ def test_compat():
             assert _NUMEXPR_INSTALLED
 
     except ImportError:
-        raise nose.SkipTest("not testing numexpr version compat")
+        pytest.skip("not testing numexpr version compat")
 
 
 def test_invalid_numexpr_version():
@@ -49,14 +49,14 @@ def testit():
         try:
             import numexpr as ne
         except ImportError:
-            raise nose.SkipTest("no numexpr")
+            pytest.skip("no numexpr")
         else:
             if ne.__version__ < LooseVersion('2.1'):
                 with tm.assertRaisesRegexp(ImportError, "'numexpr' version is "
                                            ".+, must be >= 2.1"):
                     testit()
             elif ne.__version__ == LooseVersion('2.4.4'):
-                raise nose.SkipTest("numexpr version==2.4.4")
+                pytest.skip("numexpr version==2.4.4")
             else:
                 testit()
     else:

pandas/computation/tests/test_eval.py

@@ -6,8 +6,7 @@
 from itertools import product
 from distutils.version import LooseVersion
 
-import nose
-from nose.tools import assert_raises
+import pytest
 
 from numpy.random import randn, rand, randint
 import numpy as np
@@ -319,7 +318,7 @@ def get_expected_pow_result(self, lhs, rhs):
         except ValueError as e:
             if str(e).startswith('negative number cannot be raised to a fractional power'):
                 if self.engine == 'python':
-                    raise nose.SkipTest(str(e))
+                    pytest.skip(str(e))
                 else:
                     expected = np.nan
             else:
@@ -1174,13 +1173,15 @@ def test_bool_ops_with_constants(self):
     def test_panel_fails(self):
         x = Panel(randn(3, 4, 5))
         y = Series(randn(10))
-        assert_raises(NotImplementedError, self.eval, 'x + y',
+        with pytest.raises(NotImplementedError):
+            self.eval('x + y',
                       local_dict={'x': x, 'y': y})
 
     def test_4d_ndarray_fails(self):
         x = randn(3, 4, 5, 6)
         y = Series(randn(10))
-        assert_raises(NotImplementedError, self.eval, 'x + y',
+        with pytest.raises(NotImplementedError):
+            self.eval('x + y',
                       local_dict={'x': x, 'y': y})
 
     def test_constant(self):
@@ -1705,7 +1706,7 @@ def test_result_types(self):
 
     def test_result_types2(self):
         # xref https://github.com/pandas-dev/pandas/issues/12293
-        raise nose.SkipTest("unreliable tests on complex128")
+        pytest.skip("unreliable tests on complex128")
 
         # Did not test complex64 because DataFrame is converting it to
         # complex128. Due to https://github.com/pandas-dev/pandas/issues/10952
@@ -1822,7 +1823,8 @@ def check_disallowed_nodes(engine, parser):
     inst = VisitorClass('x + 1', engine, parser)
 
     for ops in uns_ops:
-        assert_raises(NotImplementedError, getattr(inst, ops))
+        with pytest.raises(NotImplementedError):
+            getattr(inst, ops)()
 
 
 def test_disallowed_nodes():
@@ -1833,7 +1835,8 @@ def test_disallowed_nodes():
 def check_syntax_error_exprs(engine, parser):
     tm.skip_if_no_ne(engine)
     e = 's +'
-    assert_raises(SyntaxError, pd.eval, e, engine=engine, parser=parser)
+    with pytest.raises(SyntaxError):
+        pd.eval(e, engine=engine, parser=parser)
 
 
 def test_syntax_error_exprs():