def test_not_a_layout_or_widget(self):
finder = None
maker = QObjectMaker(finder)
result = raises_layout_error_with_this_message("""
This class name: <QColor>, instantiates successfully,
but is neither a QLayout nor a QWidget.
""", maker.make, 'fred', 'QColor')
if not result:
self.fail()
def test_finding_error_handling_when_nothing_found(self):
finder = WidgetAndLayoutFinder()
maker = QObjectMaker(finder)
result = raises_layout_error_with_this_message("""
Cannot find any objects of class <CustomLayout>,
that are referenced by a variable or attribute
called <wont_find_me>
""", maker.make, 'wont_find_me', '?CustomLayout')
if not result:
self.fail()
def test_error_message_when_no_meaningful_input_found(self):
str_input = """
# Hello
"""
result = raises_layout_error_with_this_message(
"""
This input provided (unit test provenance) contains nothing, or
nothing except whitespace and comments.
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_error_message_when_tabs_are_present(self):
str_input = """
page \t QLabel
"""
result = raises_layout_error_with_this_message(
"""
This line contains a tab - which is not allowed.
(This line: <page \t QLabel>)
(Line number: 1, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_cannot_instantiate(self):
finder = None
maker = QObjectMaker(finder)
result = raises_layout_error_with_this_message("""
Cannot instantiate one of these: <__name__>.
It is supposed to be the name a a QLayout or QWidget
class, that can be used as a constructor.
The error coming back from Python is:
'str' object is not callable.
""", maker.make, 'fred', '__name__')
if not result:
self.fail()
def test_error_message_when_too_few_words_per_line(self):
str_input = """
page
"""
result = raises_layout_error_with_this_message(
"""
Cannot split this line, into exactly two words,
(after comments and parenthesis have been removed.)
(This line: <page>)
(Line number: 1, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_error_message_when_indent_is_not_multiple_of_two(self):
str_input = """
page QLabel
layout QHBoxLayout
"""
result = raises_layout_error_with_this_message(
"""
A line is indented by 1 spaces.
Indentation spaces must be a multiple of 2.
(This line: < layout QHBoxLayout>)
(Line number: 2, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_error_message_when_skip_indent_levels(self):
str_input = """
page QWidget
layout QVBoxLayout
"""
result = raises_layout_error_with_this_message(
"""
This line is indented too much.
It cannot be indented relative to the line
above it by more than 2 spaces.
(This line: < layout QVBoxLayout>)
(Line number: 2, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_error_message_when_set_text_fails(self):
# You can't call setText('hello') on a QVBoxLayout.
str_input = """
layout QVBoxLayout(hello)
"""
result = raises_layout_error_with_this_message(
"""
Cannot do anything with the text you specified
in parenthesis because the object being created
has neither of the following methods: setText(), or setTitle().
(This line: <layout QVBoxLayout(hello)>)
(Line number: 1, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_finding_error_handling_when_duplicates_found(self):
# Create two items that should get found and thus be duplicates.
# Assign them the local variables to defeat immediate GC.
my_page = CustomLayout()
arbitrary = HasTargetIn()
finder = WidgetAndLayoutFinder()
maker = QObjectMaker(finder)
result = raises_layout_error_with_this_message("""
Ambiguity problem. Found more than one object of
class: <CustomLayout>, referenced by a variable or attribute
called: <my_page>
""", maker.make, 'my_page', '?CustomLayout')
if not result:
self.fail()
def test_error_message_when_name_is_not_unique(self):
# Names must be unique.
str_input = """
foo QVBoxLayout
bar QGroupBox
bar QLabel
"""
result = raises_layout_error_with_this_message(
"""
The name you have given this item (<bar>), has already
been used.
(This line: < bar QLabel>)
(Line number: 3, from unit test provenance)
""", Builder.build, str_input, 'unit test provenance')
if not result:
self.fail()
def test_unrecognized_class(self):
# Specify the required class as HBoxLayout (omitting the Q)
finder = None
maker = QObjectMaker(finder)
result = raises_layout_error_with_this_message("""
Python cannot find this word in the QtGui namespace: <HBoxLayout>,
Did you mean one of these:
QHBoxLayout
QBoxLayout
QVBoxLayout
QLayout
QTextLayout
QFormLayout
""", maker.make, 'fred', 'HBoxLayout')
if not result:
self.fail()
def test_error_handling_when_speculative_methods_all_fail(self):
# There is no way to add a widget to a widget.
result = raises_layout_error_with_this_message(
"""
Could not add this child: <fred> to its parent.
The child is a: <QWidget>
The parent is a: <QWidget>
None of the following addition methods worked:
addLayout
setLayout
addWidget
addTab
setWidget
addSpacerItem
""", ChildAdder.add, QWidget(), 'fred', QWidget())
if not result:
self.fail()
def test_querying_accessor_error_msg_for_none_found(self):
str_input = """
layout QVBoxLayout
foo QLabel
bar QPushButton
baz QTextEdit
"""
layouts_created = Builder.build(str_input, 'unit test provenance')
result = raises_layout_error_with_this_message(
"""
No path can be found that ends with <harry>.
These are the paths that do exist:
layout QVBoxLayout
layout.foo QLabel
layout.bar QPushButton
layout.baz QTextEdit
""", layouts_created.at, 'harry')
if not result:
self.fail()
