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Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)
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307
Dependencies/Python/Lib/idlelib/idle_test/mock_tk.py
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307
Dependencies/Python/Lib/idlelib/idle_test/mock_tk.py
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"""Classes that replace tkinter gui objects used by an object being tested.
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A gui object is anything with a master or parent parameter, which is
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typically required in spite of what the doc strings say.
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"""
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import re
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from _tkinter import TclError
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class Event:
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'''Minimal mock with attributes for testing event handlers.
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This is not a gui object, but is used as an argument for callbacks
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that access attributes of the event passed. If a callback ignores
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the event, other than the fact that is happened, pass 'event'.
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Keyboard, mouse, window, and other sources generate Event instances.
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Event instances have the following attributes: serial (number of
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event), time (of event), type (of event as number), widget (in which
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event occurred), and x,y (position of mouse). There are other
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attributes for specific events, such as keycode for key events.
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tkinter.Event.__doc__ has more but is still not complete.
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'''
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def __init__(self, **kwds):
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"Create event with attributes needed for test"
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self.__dict__.update(kwds)
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class Var:
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"Use for String/Int/BooleanVar: incomplete"
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def __init__(self, master=None, value=None, name=None):
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self.master = master
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self.value = value
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self.name = name
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def set(self, value):
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self.value = value
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def get(self):
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return self.value
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class Mbox_func:
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"""Generic mock for messagebox functions, which all have the same signature.
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Instead of displaying a message box, the mock's call method saves the
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arguments as instance attributes, which test functions can then examine.
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The test can set the result returned to ask function
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"""
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def __init__(self, result=None):
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self.result = result # Return None for all show funcs
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def __call__(self, title, message, *args, **kwds):
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# Save all args for possible examination by tester
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self.title = title
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self.message = message
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self.args = args
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self.kwds = kwds
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return self.result # Set by tester for ask functions
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class Mbox:
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"""Mock for tkinter.messagebox with an Mbox_func for each function.
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Example usage in test_module.py for testing functions in module.py:
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---
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from idlelib.idle_test.mock_tk import Mbox
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import module
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orig_mbox = module.messagebox
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showerror = Mbox.showerror # example, for attribute access in test methods
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class Test(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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module.messagebox = Mbox
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@classmethod
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def tearDownClass(cls):
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module.messagebox = orig_mbox
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---
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For 'ask' functions, set func.result return value before calling the method
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that uses the message function. When messagebox functions are the
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only GUI calls in a method, this replacement makes the method GUI-free,
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"""
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askokcancel = Mbox_func() # True or False
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askquestion = Mbox_func() # 'yes' or 'no'
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askretrycancel = Mbox_func() # True or False
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askyesno = Mbox_func() # True or False
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askyesnocancel = Mbox_func() # True, False, or None
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showerror = Mbox_func() # None
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showinfo = Mbox_func() # None
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showwarning = Mbox_func() # None
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class Text:
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"""A semi-functional non-gui replacement for tkinter.Text text editors.
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The mock's data model is that a text is a list of \n-terminated lines.
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The mock adds an empty string at the beginning of the list so that the
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index of actual lines start at 1, as with Tk. The methods never see this.
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Tk initializes files with a terminal \n that cannot be deleted. It is
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invisible in the sense that one cannot move the cursor beyond it.
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This class is only tested (and valid) with strings of ascii chars.
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For testing, we are not concerned with Tk Text's treatment of,
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for instance, 0-width characters or character + accent.
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"""
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def __init__(self, master=None, cnf={}, **kw):
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'''Initialize mock, non-gui, text-only Text widget.
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At present, all args are ignored. Almost all affect visual behavior.
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There are just a few Text-only options that affect text behavior.
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'''
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self.data = ['', '\n']
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def index(self, index):
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"Return string version of index decoded according to current text."
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return "%s.%s" % self._decode(index, endflag=1)
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def _decode(self, index, endflag=0):
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"""Return a (line, char) tuple of int indexes into self.data.
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This implements .index without converting the result back to a string.
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The result is constrained by the number of lines and linelengths of
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self.data. For many indexes, the result is initially (1, 0).
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The input index may have any of several possible forms:
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* line.char float: converted to 'line.char' string;
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* 'line.char' string, where line and char are decimal integers;
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* 'line.char lineend', where lineend='lineend' (and char is ignored);
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* 'line.end', where end='end' (same as above);
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* 'insert', the positions before terminal \n;
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* 'end', whose meaning depends on the endflag passed to ._endex.
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* 'sel.first' or 'sel.last', where sel is a tag -- not implemented.
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"""
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if isinstance(index, (float, bytes)):
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index = str(index)
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try:
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index=index.lower()
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except AttributeError:
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raise TclError('bad text index "%s"' % index) from None
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lastline = len(self.data) - 1 # same as number of text lines
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if index == 'insert':
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return lastline, len(self.data[lastline]) - 1
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elif index == 'end':
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return self._endex(endflag)
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line, char = index.split('.')
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line = int(line)
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# Out of bounds line becomes first or last ('end') index
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if line < 1:
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return 1, 0
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elif line > lastline:
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return self._endex(endflag)
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linelength = len(self.data[line]) -1 # position before/at \n
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if char.endswith(' lineend') or char == 'end':
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return line, linelength
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# Tk requires that ignored chars before ' lineend' be valid int
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if m := re.fullmatch(r'end-(\d*)c', char, re.A): # Used by hyperparser.
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return line, linelength - int(m.group(1))
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# Out of bounds char becomes first or last index of line
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char = int(char)
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if char < 0:
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char = 0
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elif char > linelength:
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char = linelength
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return line, char
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def _endex(self, endflag):
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'''Return position for 'end' or line overflow corresponding to endflag.
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-1: position before terminal \n; for .insert(), .delete
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0: position after terminal \n; for .get, .delete index 1
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1: same viewed as beginning of non-existent next line (for .index)
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'''
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n = len(self.data)
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if endflag == 1:
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return n, 0
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else:
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n -= 1
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return n, len(self.data[n]) + endflag
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def insert(self, index, chars):
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"Insert chars before the character at index."
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if not chars: # ''.splitlines() is [], not ['']
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return
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chars = chars.splitlines(True)
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if chars[-1][-1] == '\n':
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chars.append('')
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line, char = self._decode(index, -1)
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before = self.data[line][:char]
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after = self.data[line][char:]
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self.data[line] = before + chars[0]
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self.data[line+1:line+1] = chars[1:]
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self.data[line+len(chars)-1] += after
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def get(self, index1, index2=None):
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"Return slice from index1 to index2 (default is 'index1+1')."
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startline, startchar = self._decode(index1)
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if index2 is None:
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endline, endchar = startline, startchar+1
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else:
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endline, endchar = self._decode(index2)
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if startline == endline:
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return self.data[startline][startchar:endchar]
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else:
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lines = [self.data[startline][startchar:]]
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for i in range(startline+1, endline):
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lines.append(self.data[i])
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lines.append(self.data[endline][:endchar])
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return ''.join(lines)
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def delete(self, index1, index2=None):
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'''Delete slice from index1 to index2 (default is 'index1+1').
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Adjust default index2 ('index+1) for line ends.
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Do not delete the terminal \n at the very end of self.data ([-1][-1]).
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'''
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startline, startchar = self._decode(index1, -1)
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if index2 is None:
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if startchar < len(self.data[startline])-1:
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# not deleting \n
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endline, endchar = startline, startchar+1
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elif startline < len(self.data) - 1:
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# deleting non-terminal \n, convert 'index1+1 to start of next line
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endline, endchar = startline+1, 0
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else:
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# do not delete terminal \n if index1 == 'insert'
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return
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else:
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endline, endchar = self._decode(index2, -1)
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# restricting end position to insert position excludes terminal \n
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if startline == endline and startchar < endchar:
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self.data[startline] = self.data[startline][:startchar] + \
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self.data[startline][endchar:]
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elif startline < endline:
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self.data[startline] = self.data[startline][:startchar] + \
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self.data[endline][endchar:]
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startline += 1
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for i in range(startline, endline+1):
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del self.data[startline]
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def compare(self, index1, op, index2):
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line1, char1 = self._decode(index1)
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line2, char2 = self._decode(index2)
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if op == '<':
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return line1 < line2 or line1 == line2 and char1 < char2
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elif op == '<=':
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return line1 < line2 or line1 == line2 and char1 <= char2
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elif op == '>':
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return line1 > line2 or line1 == line2 and char1 > char2
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elif op == '>=':
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return line1 > line2 or line1 == line2 and char1 >= char2
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elif op == '==':
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return line1 == line2 and char1 == char2
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elif op == '!=':
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return line1 != line2 or char1 != char2
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else:
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raise TclError('''bad comparison operator "%s": '''
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'''must be <, <=, ==, >=, >, or !=''' % op)
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# The following Text methods normally do something and return None.
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# Whether doing nothing is sufficient for a test will depend on the test.
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def mark_set(self, name, index):
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"Set mark *name* before the character at index."
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pass
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def mark_unset(self, *markNames):
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"Delete all marks in markNames."
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def tag_remove(self, tagName, index1, index2=None):
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"Remove tag tagName from all characters between index1 and index2."
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pass
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# The following Text methods affect the graphics screen and return None.
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# Doing nothing should always be sufficient for tests.
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def scan_dragto(self, x, y):
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"Adjust the view of the text according to scan_mark"
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def scan_mark(self, x, y):
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"Remember the current X, Y coordinates."
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def see(self, index):
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"Scroll screen to make the character at INDEX is visible."
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pass
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# The following is a Misc method inherited by Text.
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# It should properly go in a Misc mock, but is included here for now.
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def bind(sequence=None, func=None, add=None):
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"Bind to this widget at event sequence a call to function func."
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pass
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class Entry:
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"Mock for tkinter.Entry."
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def focus_set(self):
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pass
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