def test_validation(self):
"""Test validation of grammar"""
test = Visualization()
test.axes.append({'bad axes': 'ShouldRaiseError'})
with nt.assert_raises(ValidationError) as err:
test.validate()
nt.assert_equal(err.exception.args[0],
'invalid contents: axes[0] must be Axis')
def test_legends(self):
test_vis = Visualization()
test_vis.legend(title='Test', text_color='#000')
nt.assert_equals(test_vis.legends[0].title, 'Test')
nt.assert_equals(test_vis.legends[0].properties.labels.fill.value,
'#000')
nt.assert_equals(test_vis.legends[0].properties.title.fill.value,
'#000')
def test_validation(self):
"""Test validation of grammar"""
test = Visualization()
test.axes.append({'bad axes': 'ShouldRaiseError'})
with nt.assert_raises(ValidationError) as err:
test.validate()
nt.assert_equal(err.exception.message,
'invalid contents: axes[0] must be Axis')
def test_legends(self):
test_vis = Visualization()
test_vis.legend(title='Test', text_color='#000')
nt.assert_equals(test_vis.legends[0].title, 'Test')
nt.assert_equals(test_vis.legends[0].properties.labels.fill.value,
'#000')
nt.assert_equals(test_vis.legends[0].properties.title.fill.value,
'#000')
def test_grammar_dict():
"""Test Vincent Grammar Dict"""
g_dict = GrammarDict()
test = Visualization()
test_dict = {'axes': [], 'data': [], 'marks': [],
'scales': [], 'legends': []}
test_str = ('{"marks": [], "axes": [], "data": [],'
' "legends": [], "scales": []}')
nt.assert_equal(test.grammar(), test_dict)
nt.assert_equal(str(test.grammar), test_str)
nt.assert_equal(g_dict.encoder(test), test.grammar)
def test_grammar_dict():
"""Test Vincent Grammar Dict"""
g_dict = GrammarDict()
test = Visualization()
test_dict = {'axes': [], 'data': [], 'marks': [],
'scales': [], 'legends': []}
test_str = ('{"marks": [], "axes": [], "data": [],'
' "legends": [], "scales": []}')
nt.assert_equal(test.grammar(), test_dict)
nt.assert_equal(str(test.grammar), test_str)
nt.assert_equal(g_dict.encoder(test), test.grammar)
def test_to_json(self):
"""Test JSON to string"""
pretty = '''{
"marks": [],
"axes": [],
"data": [],
"scales": [],
"legends": []
}'''
test = Visualization()
actual, tested = json.loads(pretty), json.loads(test.to_json())
nt.assert_dict_equal(actual, tested)
def test_to_json(self):
"""Test JSON to string"""
pretty = '''{
"marks": [],
"axes": [],
"data": [],
"scales": [],
"legends": []
}'''
test = Visualization()
actual, tested = json.loads(pretty), json.loads(test.to_json())
nt.assert_dict_equal(actual, tested)
def test_grammar_dict():
"""Test Vincent Grammar Dict"""
g_dict = GrammarDict()
test = Visualization()
test_dict = {'axes': [], 'data': [], 'marks': [],
'scales': [], 'legends': []}
test_str = ('{"axes": [], "data": [], "legends": [], '
'"marks": [], "scales": []}')
nt.assert_equal(test.grammar(), test_dict)
print(json.dumps(test.grammar, sort_keys=True))
nt.assert_equal(json.dumps(test.grammar, sort_keys=True),
test_str)
nt.assert_equal(g_dict.encoder(test), test.grammar)
def test_axis_labeling(self):
"""Test convenience method for axis label setting"""
#With Axes already in place
test_obj = Visualization()
test_obj.axes.extend([Axis(type='x'), Axis(type='y')])
test_obj.axis_titles(x="test1", y="test2")
nt.assert_equals(test_obj.axes['x'].title, 'test1')
nt.assert_equals(test_obj.axes['y'].title, 'test2')
#With no Axes already defined
del test_obj.axes[0]
del test_obj.axes[0]
test_obj.axis_titles(x="test1", y="test2")
nt.assert_equals(test_obj.axes['x'].title, 'test1')
nt.assert_equals(test_obj.axes['y'].title, 'test2')
def test_manual_typecheck(self):
"""Test manual typechecking for elements like marks"""
test_attr = [('data', [1]), ('scales', [1]), ('axes', [1]),
('marks', [1]), ('legends', [1])]
assert_manual_typechecking(test_attr, Visualization())
def test_grammar_dict():
"""Test Vincent Grammar Dict"""
g_dict = GrammarDict()
test = Visualization()
test_dict = {
'axes': [],
'data': [],
'marks': [],
'scales': [],
'legends': []
}
test_str = ('{"axes": [], "data": [], "legends": [], '
'"marks": [], "scales": []}')
nt.assert_equal(test.grammar(), test_dict)
print(json.dumps(test.grammar, sort_keys=True))
nt.assert_equal(json.dumps(test.grammar, sort_keys=True), test_str)
nt.assert_equal(g_dict.encoder(test), test.grammar)
def test_grammar_typechecking(self):
"""Visualization fields are correctly type checked"""
grammar_types = [('name', [str]), ('width', [int]), ('height', [int]),
('data', [list, KeyedList]),
('scales', [list, KeyedList]),
('axes', [list, KeyedList]),
('marks', [list, KeyedList])]
assert_grammar_typechecking(grammar_types, Visualization())
def test_validation(self):
"""Test Visualization validation"""
test_obj = Visualization()
with nt.assert_raises(ValidationError) as err:
test_obj.validate()
nt.assert_equal(err.exception.args[0],
'data must be defined for valid visualization')
test_obj.data = [Data(name='test'), Data(name='test')]
with nt.assert_raises(ValidationError) as err:
test_obj.validate()
nt.assert_equal(err.exception.args[0], 'data has duplicate names')
def test_validation(self):
"""Test Visualization validation"""
test_obj = Visualization()
with nt.assert_raises(ValidationError) as err:
test_obj.validate()
nt.assert_equal(err.exception.message,
'data must be defined for valid visualization')
test_obj.data = [Data(name='test'), Data(name='test')]
with nt.assert_raises(ValidationError) as err:
test_obj.validate()
nt.assert_equal(err.exception.message,
'data has duplicate names')
def test_validation_checking(self):
"""Visualization fields are grammar-checked"""
grammar_errors = [('width', -1, ValueError,
'width cannot be negative'),
('height', -1, ValueError,
'height cannot be negative'),
('viewport', [1], ValueError,
'viewport must have 2 dimensions'),
('viewport', [-1, -1], ValueError,
'viewport dimensions cannot be negative'),
('padding', {'top': 2}, ValueError,
('Padding must have keys "top", "left", "right",'
' "bottom".')),
('padding',
{'top': 1, 'left': 1, 'right': 1, 'bottom': -1},
ValueError, 'Padding cannot be negative.'),
('padding', -1, ValueError,
'Padding cannot be negative.')]
assert_grammar_validation(grammar_errors, Visualization())
def test_axis_labeling(self):
"""Test convenience method for axis label setting"""
#With Axes already in place
test_obj = Visualization()
test_obj.axes.extend([Axis(type='x'), Axis(type='y')])
test_obj.axis_titles(x="test1", y="test2")
nt.assert_equals(test_obj.axes['x'].title, 'test1')
nt.assert_equals(test_obj.axes['y'].title, 'test2')
#With no Axes already defined
del test_obj.axes[0]
del test_obj.axes[0]
test_obj.axis_titles(x="test1", y="test2")
nt.assert_equals(test_obj.axes['x'].title, 'test1')
nt.assert_equals(test_obj.axes['y'].title, 'test2')
def test_axis_properties(self):
test_vis = Visualization()
with nt.assert_raises(ValueError) as err:
test_vis.x_axis_properties(title_size=20, label_angle=30)
nt.assert_equals(err.exception.args[0],
'This Visualization has no axes!')
test_vis.axes = [Axis(scale='x'), Axis(scale='y')]
test_vis.x_axis_properties(title_size=20,
title_offset=10,
label_angle=30,
color='#000')
test_vis.y_axis_properties(title_size=20,
title_offset=10,
label_angle=30,
color='#000')
def check_axis_colors():
for axis in test_vis.axes:
props = axis.properties
for prop in [props.title.fill, props.labels.fill]:
nt.assert_equals(getattr(prop, 'value'), '#000')
for prop in [
props.axis.stroke, props.major_ticks.stroke,
props.minor_ticks.stroke, props.ticks.stroke
]:
nt.assert_equals(getattr(prop, 'value'), '#000')
for axis in test_vis.axes:
props = axis.properties
nt.assert_equals(props.labels.angle.value, 30)
nt.assert_equals(props.title.font_size.value, 20)
nt.assert_equals(props.title.dy.value, 10)
check_axis_colors()
test_vis.axes = [Axis(scale='x'), Axis(scale='y')]
test_vis.common_axis_properties(color='#000')
for axis in test_vis.axes:
check_axis_colors()
def test_axis_properties(self):
test_vis = Visualization()
with nt.assert_raises(ValueError) as err:
test_vis.x_axis_properties(title_size=20, label_angle=30)
nt.assert_equals(err.exception.args[0],
'This Visualization has no axes!')
test_vis.axes = [Axis(scale='x'), Axis(scale='y')]
test_vis.x_axis_properties(title_size=20, title_offset=10,
label_angle=30, color='#000')
test_vis.y_axis_properties(title_size=20, title_offset=10,
label_angle=30, color='#000')
def check_axis_colors():
for axis in test_vis.axes:
props = axis.properties
for prop in [props.title.fill, props.labels.fill]:
nt.assert_equals(getattr(prop, 'value'), '#000')
for prop in [props.axis.stroke, props.major_ticks.stroke,
props.minor_ticks.stroke, props.ticks.stroke]:
nt.assert_equals(getattr(prop, 'value'), '#000')
for axis in test_vis.axes:
props = axis.properties
nt.assert_equals(props.labels.angle.value, 30)
nt.assert_equals(props.title.font_size.value, 20)
nt.assert_equals(props.title.dy.value, 10)
check_axis_colors()
test_vis.axes = [Axis(scale='x'), Axis(scale='y')]
test_vis.common_axis_properties(color='#000')
for axis in test_vis.axes:
check_axis_colors()