def test_accepts_only_with_message(self):
items = ["a", "b"]
items_failing = ["a", "b", 1]
message = "There should be only strings."
Guard.accepts_only(items, [str], message)
self.assertRaisesEx(ValueError, Guard.accepts_only, items_failing, [str], message, exc_pattern=re.compile(message))
def test_accepts_only_without_message(self):
items = ["a", "b"]
items_failing = ["a", "b", 1]
message = u"All arguments in the given collection should be of type\(s\) \[str\] and at least one of them isn't."
Guard.accepts_only(items, [str])
self.assertRaisesEx(ValueError, Guard.accepts_only, items_failing, [str], exc_pattern=re.compile(message))
def test_accepts_only_without_message(self):
items = ["a", "b"]
items_failing = ["a", "b", 1]
message = u"All arguments in the given collection should be of type\(s\) \[str\] and at least one of them isn't."
Guard.accepts_only(items, [str])
self.assertRaisesEx(ValueError,
Guard.accepts_only,
items_failing, [str],
exc_pattern=re.compile(message))
def select(self, *cols):
empty_message = "Selecting with no fields is not valid. " \
+ "When using From(provider).select method, " \
+ "please provide a list of expressions or strings as fields."
Guard.against_empty(cols, empty_message)
for col in cols:
Guard.against_empty(col, empty_message)
Guard.accepts_only(cols, [str, Expression], "Selecting with invalid type. " \
+ "When using From(provider).select method, " \
+ "please provide a list of expressions or strings as fields.")
return self.provider.parse(self, action=Actions.Select, cols=cols)
def test_accepts_only_with_message(self):
items = ["a", "b"]
items_failing = ["a", "b", 1]
message = "There should be only strings."
Guard.accepts_only(items, [str], message)
self.assertRaisesEx(ValueError,
Guard.accepts_only,
items_failing, [str],
message,
exc_pattern=re.compile(message))
def select(self, *cols):
empty_message = "Selecting with no fields is not valid. " \
+ "When using From(provider).select method, " \
+ "please provide a list of expressions or strings as fields."
Guard.against_empty(cols, empty_message)
for col in cols:
Guard.against_empty(col, empty_message)
Guard.accepts_only(cols, [str, Expression], "Selecting with invalid type. " \
+ "When using From(provider).select method, " \
+ "please provide a list of expressions or strings as fields.")
return self.provider.parse(self, action=Actions.Select, cols=cols)
