/usr/lib/python3/dist-packages/matplotlib/tests/test_labeled_data_unpacking.py is in python3-matplotlib 1.5.1-1ubuntu1.
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from nose.tools import (assert_raises, assert_equal)
from nose.plugins.skip import SkipTest
try:
# 3.2+ versions
from nose.tools import assert_regex, assert_not_regex
except ImportError:
try:
# 2.7 versions
from nose.tools import assert_regexp_matches, assert_not_regexp_matches
assert_regex = assert_regexp_matches
assert_not_regex = assert_not_regexp_matches
except ImportError:
# 2.6 versions
def noop(txt, regex):
raise SkipTest("No assert for regex matching in py2.6")
assert_regex = noop
assert_not_regex = noop
from ..testing import assert_produces_warning
from .. import unpack_labeled_data
# Notes on testing the plotting functions itself
# * the individual decorated plotting functions are tested in 'test_axes.py'
# * that pyplot functions accept a data kwarg is only tested in
# test_axes.test_pie_linewidth_0
# these two get used in multiple tests, so define them here
@unpack_labeled_data(replace_names=["x", "y"], label_namer="y")
def plot_func(ax, x, y, ls="x", label=None, w="xyz"):
return ("x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label))
@unpack_labeled_data(replace_names=["x", "y"], label_namer="y",
positional_parameter_names=["x", "y", "ls", "label", "w"])
def plot_func_varags(ax, *args, **kwargs):
all_args = [None, None, "x", None, "xyz"]
for i, v in enumerate(args):
all_args[i] = v
for i, k in enumerate(["x", "y", "ls", "label", "w"]):
if k in kwargs:
all_args[i] = kwargs[k]
x, y, ls, label, w = all_args
return ("x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label))
all_funcs = [plot_func, plot_func_varags]
def test_compiletime_checks():
"""test decorator invocations -> no replacements"""
def func(ax, x, y): pass
def func_args(ax, x, y, *args): pass
def func_kwargs(ax, x, y, **kwargs): pass
def func_no_ax_args(*args, **kwargs): pass
# this is ok
unpack_labeled_data(replace_names=["x", "y"])(func)
unpack_labeled_data(replace_names=["x", "y"])(func_kwargs)
# this has "enough" information to do all the replaces
unpack_labeled_data(replace_names=["x", "y"])(func_args)
# no positional_parameter_names but needed due to replaces
def f():
# z is unknown
unpack_labeled_data(replace_names=["x", "y", "z"])(func_args)
assert_raises(AssertionError, f)
def f():
unpack_labeled_data(replace_names=["x", "y"])(func_no_ax_args)
assert_raises(AssertionError, f)
# no replacements at all -> all ok...
unpack_labeled_data(replace_names=[], label_namer=None)(func)
unpack_labeled_data(replace_names=[], label_namer=None)(func_args)
unpack_labeled_data(replace_names=[], label_namer=None)(func_kwargs)
unpack_labeled_data(replace_names=[], label_namer=None)(func_no_ax_args)
# label namer is unknown
def f():
unpack_labeled_data(label_namer="z")(func)
assert_raises(AssertionError, f)
def f():
unpack_labeled_data(label_namer="z")(func_args)
assert_raises(AssertionError, f)
# but "ok-ish", if func has kwargs -> will show up at runtime :-(
unpack_labeled_data(label_namer="z")(func_kwargs)
unpack_labeled_data(label_namer="z")(func_no_ax_args)
def test_label_problems_at_runtime():
"""Tests for behaviour which would actually be nice to get rid of."""
@unpack_labeled_data(label_namer="z")
def func(*args, **kwargs):
pass
def f():
func(None, x="a", y="b")
# This is a programming mistake: the parameter which should add the
# label is not present in the function call. Unfortunately this was masked
# due to the **kwargs useage
# This would be nice to handle as a compiletime check (see above...)
with assert_produces_warning(RuntimeWarning):
f()
def real_func(x, y):
pass
@unpack_labeled_data(label_namer="x")
def func(*args, **kwargs):
real_func(**kwargs)
def f():
func(None, x="a", y="b")
# This sets a label although the function can't handle it.
assert_raises(TypeError, f)
def test_function_call_without_data():
"""test without data -> no replacements"""
for func in all_funcs:
assert_equal(func(None, "x", "y"),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: None")
assert_equal(func(None, x="x", y="y"),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: None")
assert_equal(func(None, "x", "y", label=""),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: ")
assert_equal(func(None, "x", "y", label="text"),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: text")
assert_equal(func(None, x="x", y="y", label=""),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: ")
assert_equal(func(None, x="x", y="y", label="text"),
"x: ['x'], y: ['y'], ls: x, w: xyz, label: text")
def test_function_call_with_dict_data():
"""Test with dict data -> label comes from the value of 'x' parameter """
data = {"a": [1, 2], "b": [8, 9], "w": "NOT"}
for func in all_funcs:
assert_equal(func(None, "a", "b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func(None, x="a", y="b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func(None, "a", "b", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func(None, "a", "b", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
assert_equal(func(None, x="a", y="b", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func(None, x="a", y="b", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
def test_function_call_with_dict_data_not_in_data():
"test for the case that one var is not in data -> half replaces, half kept"
data = {"a": [1, 2], "w": "NOT"}
for func in all_funcs:
assert_equal(func(None, "a", "b", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: b")
assert_equal(func(None, x="a", y="b", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: b")
assert_equal(func(None, "a", "b", label="", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: ")
assert_equal(func(None, "a", "b", label="text", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: text")
assert_equal(func(None, x="a", y="b", label="", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: ")
assert_equal(func(None, x="a", y="b", label="text", data=data),
"x: [1, 2], y: ['b'], ls: x, w: xyz, label: text")
def test_function_call_with_pandas_data():
"""test with pandas dataframe -> label comes from data["col"].name """
try:
import pandas as pd
except ImportError:
raise SkipTest("Pandas not installed")
data = pd.DataFrame({"a": [1, 2], "b": [8, 9], "w": ["NOT", "NOT"]})
for func in all_funcs:
assert_equal(func(None, "a", "b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func(None, x="a", y="b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func(None, "a", "b", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func(None, "a", "b", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
assert_equal(func(None, x="a", y="b", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func(None, x="a", y="b", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
def test_function_call_replace_all():
"""Test without a "replace_names" argument, all vars should be replaced"""
data = {"a": [1, 2], "b": [8, 9], "x": "xyz"}
@unpack_labeled_data(label_namer="y")
def func_replace_all(ax, x, y, ls="x", label=None, w="NOT"):
return "x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label)
assert_equal(func_replace_all(None, "a", "b", w="x", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func_replace_all(None, x="a", y="b", w="x", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func_replace_all(None, "a", "b", w="x", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(
func_replace_all(None, "a", "b", w="x", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
assert_equal(
func_replace_all(None, x="a", y="b", w="x", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(
func_replace_all(None, x="a", y="b", w="x", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
@unpack_labeled_data(label_namer="y")
def func_varags_replace_all(ax, *args, **kwargs):
all_args = [None, None, "x", None, "xyz"]
for i, v in enumerate(args):
all_args[i] = v
for i, k in enumerate(["x", "y", "ls", "label", "w"]):
if k in kwargs:
all_args[i] = kwargs[k]
x, y, ls, label, w = all_args
return "x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label)
# in the first case, we can't get a "y" argument,
# as we don't know the names of the *args
assert_equal(func_varags_replace_all(None, x="a", y="b", w="x", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(
func_varags_replace_all(None, "a", "b", w="x", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(
func_varags_replace_all(None, "a", "b", w="x", label="text",
data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
assert_equal(
func_varags_replace_all(None, x="a", y="b", w="x", label="",
data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(
func_varags_replace_all(None, x="a", y="b", w="x", label="text",
data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
with assert_produces_warning():
assert_equal(func_varags_replace_all(None, "a", "b", w="x", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: None")
def test_no_label_replacements():
"""Test with "label_namer=None" -> no label replacement at all"""
@unpack_labeled_data(replace_names=["x", "y"], label_namer=None)
def func_no_label(ax, x, y, ls="x", label=None, w="xyz"):
return "x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label)
data = {"a": [1, 2], "b": [8, 9], "w": "NOT"}
assert_equal(func_no_label(None, "a", "b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: None")
assert_equal(func_no_label(None, x="a", y="b", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: None")
assert_equal(func_no_label(None, "a", "b", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func_no_label(None, "a", "b", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
def test_more_args_than_pos_parameter():
@unpack_labeled_data(replace_names=["x", "y"], label_namer="y")
def func(ax, x, y, z=1):
pass
data = {"a": [1, 2], "b": [8, 9], "w": "NOT"}
def f():
func(None, "a", "b", "z", "z", data=data)
assert_raises(RuntimeError, f)
def test_function_call_with_replace_all_args():
"""Test with a "replace_all_args" argument, all *args should be replaced"""
data = {"a": [1, 2], "b": [8, 9], "x": "xyz"}
def funcy(ax, *args, **kwargs):
all_args = [None, None, "x", None, "NOT"]
for i, v in enumerate(args):
all_args[i] = v
for i, k in enumerate(["x", "y", "ls", "label", "w"]):
if k in kwargs:
all_args[i] = kwargs[k]
x, y, ls, label, w = all_args
return "x: %s, y: %s, ls: %s, w: %s, label: %s" % (
list(x), list(y), ls, w, label)
func = unpack_labeled_data(replace_all_args=True, replace_names=["w"],
label_namer="y")(funcy)
assert_equal(func(None, "a", "b", w="x", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func(None, "a", "b", w="x", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
func2 = unpack_labeled_data(replace_all_args=True, replace_names=["w"],
label_namer="y",
positional_parameter_names=["x", "y", "ls",
"label", "w"])(
funcy)
assert_equal(func2(None, "a", "b", w="x", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: b")
assert_equal(func2(None, "a", "b", w="x", label="", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: ")
assert_equal(func2(None, "a", "b", w="x", label="text", data=data),
"x: [1, 2], y: [8, 9], ls: x, w: xyz, label: text")
def test_docstring_addition():
@unpack_labeled_data()
def funcy(ax, *args, **kwargs):
"""Funcy does nothing"""
pass
assert_regex(funcy.__doc__,
r".*All positional and all keyword arguments\.")
assert_not_regex(funcy.__doc__, r".*All positional arguments\.")
assert_not_regex(funcy.__doc__,
r".*All arguments with the following names: .*")
@unpack_labeled_data(replace_all_args=True, replace_names=[])
def funcy(ax, x, y, z, bar=None):
"""Funcy does nothing"""
pass
assert_regex(funcy.__doc__, r".*All positional arguments\.")
assert_not_regex(funcy.__doc__,
r".*All positional and all keyword arguments\.")
assert_not_regex(funcy.__doc__,
r".*All arguments with the following names: .*")
@unpack_labeled_data(replace_all_args=True, replace_names=["bar"])
def funcy(ax, x, y, z, bar=None):
"""Funcy does nothing"""
pass
assert_regex(funcy.__doc__, r".*All positional arguments\.")
assert_regex(funcy.__doc__,
r".*All arguments with the following names: 'bar'\.")
assert_not_regex(funcy.__doc__,
r".*All positional and all keyword arguments\.")
@unpack_labeled_data(replace_names=["x", "bar"])
def funcy(ax, x, y, z, bar=None):
"""Funcy does nothing"""
pass
# lists can print in any order, so test for both x,bar and bar,x
assert_regex(funcy.__doc__,
r".*All arguments with the following names: '.*', '.*'\.")
assert_regex(funcy.__doc__, r".*'x'.*")
assert_regex(funcy.__doc__, r".*'bar'.*")
assert_not_regex(funcy.__doc__,
r".*All positional and all keyword arguments\.")
assert_not_regex(funcy.__doc__, r".*All positional arguments\.")
def test_positional_parameter_names_as_function():
# Also test the _plot_arg_replacer for plot...
from matplotlib.axes._axes import _plot_args_replacer
@unpack_labeled_data(replace_names=["x", "y"],
positional_parameter_names=_plot_args_replacer)
def funcy(ax, *args, **kwargs):
return "{args} | {kwargs}".format(args=args, kwargs=kwargs)
# the normal case...
data = {"x": "X", "y1": "Y"}
assert_equal(funcy(None, "x", "y1", data=data),
"('X', 'Y') | {}")
assert_equal(funcy(None, "x", "y1", "c", data=data),
"('X', 'Y', 'c') | {}")
# no arbitrary long args with data
def f():
assert_equal(funcy(None, "x", "y", "c", "x", "y", "x", "y", data=data),
"('X', 'Y', 'c', 'X', 'Y', 'X', 'Y') | {}")
assert_raises(ValueError, f)
# In the two arg case, if a valid color spec is in data, we warn but use
# it as data...
data = {"x": "X", "y": "Y", "ro": "!!"}
with assert_produces_warning(RuntimeWarning):
assert_equal(funcy(None, "y", "ro", data=data),
"('Y', '!!') | {}")
|