8th day of python challenges 111-117

venv/lib/python3.6/site-packages/pandas/tests/test_errors.py

@@ -0,0 +1,82 @@
+import pytest
+
+from pandas.errors import AbstractMethodError
+
+import pandas as pd  # noqa
+
+
+@pytest.mark.parametrize(
+    "exc",
+    [
+        "UnsupportedFunctionCall",
+        "UnsortedIndexError",
+        "OutOfBoundsDatetime",
+        "ParserError",
+        "PerformanceWarning",
+        "DtypeWarning",
+        "EmptyDataError",
+        "ParserWarning",
+        "MergeError",
+    ],
+)
+def test_exception_importable(exc):
+    from pandas import errors
+
+    e = getattr(errors, exc)
+    assert e is not None
+
+    # check that we can raise on them
+    with pytest.raises(e):
+        raise e()
+
+
+def test_catch_oob():
+    from pandas import errors
+
+    try:
+        pd.Timestamp("15000101")
+    except errors.OutOfBoundsDatetime:
+        pass
+
+
+def test_error_rename():
+    # see gh-12665
+    from pandas.errors import ParserError
+    from pandas.io.common import CParserError
+
+    try:
+        raise CParserError()
+    except ParserError:
+        pass
+
+    try:
+        raise ParserError()
+    except CParserError:
+        pass
+
+
+class Foo:
+    @classmethod
+    def classmethod(cls):
+        raise AbstractMethodError(cls, methodtype="classmethod")
+
+    @property
+    def property(self):
+        raise AbstractMethodError(self, methodtype="property")
+
+    def method(self):
+        raise AbstractMethodError(self)
+
+
+def test_AbstractMethodError_classmethod():
+    xpr = "This classmethod must be defined in the concrete class Foo"
+    with pytest.raises(AbstractMethodError, match=xpr):
+        Foo.classmethod()
+
+    xpr = "This property must be defined in the concrete class Foo"
+    with pytest.raises(AbstractMethodError, match=xpr):
+        Foo().property
+
+    xpr = "This method must be defined in the concrete class Foo"
+    with pytest.raises(AbstractMethodError, match=xpr):
+        Foo().method()