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test_formatparagraph.py
# Test the functions and main class method of FormatParagraph.py import unittest from idlelib import FormatParagraph as fp from idlelib.EditorWindow import EditorWindow from Tkinter import Tk, Text from test.test_support import requires class Is_Get_Test(unittest.TestCase): """Test the is_ and get_ functions""" test_comment = '# This is a comment' test_nocomment = 'This is not a comment' trailingws_comment = '# This is a comment ' leadingws_comment = ' # This is a comment' leadingws_nocomment = ' This is not a comment' def test_is_all_white(self): self.assertTrue(fp.is_all_white('')) self.assertTrue(fp.is_all_white('\t\n\r\f\v')) self.assertFalse(fp.is_all_white(self.test_comment)) def test_get_indent(self): Equal = self.assertEqual Equal(fp.get_indent(self.test_comment), '') Equal(fp.get_indent(self.trailingws_comment), '') Equal(fp.get_indent(self.leadingws_comment), ' ') Equal(fp.get_indent(self.leadingws_nocomment), ' ') def test_get_comment_header(self): Equal = self.assertEqual # Test comment strings Equal(fp.get_comment_header(self.test_comment), '#') Equal(fp.get_comment_header(self.trailingws_comment), '#') Equal(fp.get_comment_header(self.leadingws_comment), ' #') # Test non-comment strings Equal(fp.get_comment_header(self.leadingws_nocomment), ' ') Equal(fp.get_comment_header(self.test_nocomment), '') class FindTest(unittest.TestCase): """Test the find_paragraph function in FormatParagraph. Using the runcase() function, find_paragraph() is called with 'mark' set at multiple indexes before and inside the test paragraph. It appears that code with the same indentation as a quoted string is grouped as part of the same paragraph, which is probably incorrect behavior. """ @classmethod def setUpClass(cls): from idlelib.idle_test.mock_tk import Text cls.text = Text() def runcase(self, inserttext, stopline, expected): # Check that find_paragraph returns the expected paragraph when # the mark index is set to beginning, middle, end of each line # up to but not including the stop line text = self.text text.insert('1.0', inserttext) for line in range(1, stopline): linelength = int(text.index("%d.end" % line).split('.')[1]) for col in (0, linelength//2, linelength): tempindex = "%d.%d" % (line, col) self.assertEqual(fp.find_paragraph(text, tempindex), expected) text.delete('1.0', 'end') def test_find_comment(self): comment = ( "# Comment block with no blank lines before\n" "# Comment line\n" "\n") self.runcase(comment, 3, ('1.0', '3.0', '#', comment[0:58])) comment = ( "\n" "# Comment block with whitespace line before and after\n" "# Comment line\n" "\n") self.runcase(comment, 4, ('2.0', '4.0', '#', comment[1:70])) comment = ( "\n" " # Indented comment block with whitespace before and after\n" " # Comment line\n" "\n") self.runcase(comment, 4, ('2.0', '4.0', ' #', comment[1:82])) comment = ( "\n" "# Single line comment\n" "\n") self.runcase(comment, 3, ('2.0', '3.0', '#', comment[1:23])) comment = ( "\n" " # Single line comment with leading whitespace\n" "\n") self.runcase(comment, 3, ('2.0', '3.0', ' #', comment[1:51])) comment = ( "\n" "# Comment immediately followed by code\n" "x = 42\n" "\n") self.runcase(comment, 3, ('2.0', '3.0', '#', comment[1:40])) comment = ( "\n" " # Indented comment immediately followed by code\n" "x = 42\n" "\n") self.runcase(comment, 3, ('2.0', '3.0', ' #', comment[1:53])) comment = ( "\n" "# Comment immediately followed by indented code\n" " x = 42\n" "\n") self.runcase(comment, 3, ('2.0', '3.0', '#', comment[1:49])) def test_find_paragraph(self): teststring = ( '"""String with no blank lines before\n' 'String line\n' '"""\n' '\n') self.runcase(teststring, 4, ('1.0', '4.0', '', teststring[0:53])) teststring = ( "\n" '"""String with whitespace line before and after\n' 'String line.\n' '"""\n' '\n') self.runcase(teststring, 5, ('2.0', '5.0', '', teststring[1:66])) teststring = ( '\n' ' """Indented string with whitespace before and after\n' ' Comment string.\n' ' """\n' '\n') self.runcase(teststring, 5, ('2.0', '5.0', ' ', teststring[1:85])) teststring = ( '\n' '"""Single line string."""\n' '\n') self.runcase(teststring, 3, ('2.0', '3.0', '', teststring[1:27])) teststring = ( '\n' ' """Single line string with leading whitespace."""\n' '\n') self.runcase(teststring, 3, ('2.0', '3.0', ' ', teststring[1:55])) class ReformatFunctionTest(unittest.TestCase): """Test the reformat_paragraph function without the editor window.""" def test_reformat_paragraph(self): Equal = self.assertEqual reform = fp.reformat_paragraph hw = "O hello world" Equal(reform(' ', 1), ' ') Equal(reform("Hello world", 20), "Hello world") # Test without leading newline Equal(reform(hw, 1), "O\nhello\nworld") Equal(reform(hw, 6), "O\nhello\nworld") Equal(reform(hw, 7), "O hello\nworld") Equal(reform(hw, 12), "O hello\nworld") Equal(reform(hw, 13), "O hello world") # Test with leading newline hw = "\nO hello world" Equal(reform(hw, 1), "\nO\nhello\nworld") Equal(reform(hw, 6), "\nO\nhello\nworld") Equal(reform(hw, 7), "\nO hello\nworld") Equal(reform(hw, 12), "\nO hello\nworld") Equal(reform(hw, 13), "\nO hello world") class ReformatCommentTest(unittest.TestCase): """Test the reformat_comment function without the editor window.""" def test_reformat_comment(self): Equal = self.assertEqual # reformat_comment formats to a minimum of 20 characters test_string = ( " \"\"\"this is a test of a reformat for a triple quoted string" " will it reformat to less than 70 characters for me?\"\"\"") result = fp.reformat_comment(test_string, 70, " ") expected = ( " \"\"\"this is a test of a reformat for a triple quoted string will it\n" " reformat to less than 70 characters for me?\"\"\"") Equal(result, expected) test_comment = ( "# this is a test of a reformat for a triple quoted string will " "it reformat to less than 70 characters for me?") result = fp.reformat_comment(test_comment, 70, "#") expected = ( "# this is a test of a reformat for a triple quoted string will it\n" "# reformat to less than 70 characters for me?") Equal(result, expected) class FormatClassTest(unittest.TestCase): def test_init_close(self): instance = fp.FormatParagraph('editor') self.assertEqual(instance.editwin, 'editor') instance.close() self.assertEqual(instance.editwin, None) # For testing format_paragraph_event, Initialize FormatParagraph with # a mock Editor with .text and .get_selection_indices. The text must # be a Text wrapper that adds two methods # A real EditorWindow creates unneeded, time-consuming baggage and # sometimes emits shutdown warnings like this: # "warning: callback failed in WindowList <class '_tkinter.TclError'> # : invalid command name ".55131368.windows". # Calling EditorWindow._close in tearDownClass prevents this but causes # other problems (windows left open). class TextWrapper: def __init__(self, master): self.text = Text(master=master) def __getattr__(self, name): return getattr(self.text, name) def undo_block_start(self): pass def undo_block_stop(self): pass class Editor: def __init__(self, root): self.text = TextWrapper(root) get_selection_indices = EditorWindow. get_selection_indices.im_func class FormatEventTest(unittest.TestCase): """Test the formatting of text inside a Text widget. This is done with FormatParagraph.format.paragraph_event, which calls functions in the module as appropriate. """ test_string = ( " '''this is a test of a reformat for a triple " "quoted string will it reformat to less than 70 " "characters for me?'''\n") multiline_test_string = ( " '''The first line is under the max width.\n" " The second line's length is way over the max width. It goes " "on and on until it is over 100 characters long.\n" " Same thing with the third line. It is also way over the max " "width, but FormatParagraph will fix it.\n" " '''\n") multiline_test_comment = ( "# The first line is under the max width.\n" "# The second line's length is way over the max width. It goes on " "and on until it is over 100 characters long.\n" "# Same thing with the third line. It is also way over the max " "width, but FormatParagraph will fix it.\n" "# The fourth line is short like the first line.") @classmethod def setUpClass(cls): requires('gui') cls.root = Tk() editor = Editor(root=cls.root) cls.text = editor.text.text # Test code does not need the wrapper. cls.formatter = fp.FormatParagraph(editor).format_paragraph_event # Sets the insert mark just after the re-wrapped and inserted text. @classmethod def tearDownClass(cls): del cls.text, cls.formatter cls.root.destroy() del cls.root def test_short_line(self): self.text.insert('1.0', "Short line\n") self.formatter("Dummy") self.assertEqual(self.text.get('1.0', 'insert'), "Short line\n" ) self.text.delete('1.0', 'end') def test_long_line(self): text = self.text # Set cursor ('insert' mark) to '1.0', within text. text.insert('1.0', self.test_string) text.mark_set('insert', '1.0') self.formatter('ParameterDoesNothing', limit=70) result = text.get('1.0', 'insert') # find function includes \n expected = ( " '''this is a test of a reformat for a triple quoted string will it\n" " reformat to less than 70 characters for me?'''\n") # yes self.assertEqual(result, expected) text.delete('1.0', 'end') # Select from 1.11 to line end. text.insert('1.0', self.test_string) text.tag_add('sel', '1.11', '1.end') self.formatter('ParameterDoesNothing', limit=70) result = text.get('1.0', 'insert') # selection excludes \n expected = ( " '''this is a test of a reformat for a triple quoted string will it reformat\n" " to less than 70 characters for me?'''") # no self.assertEqual(result, expected) text.delete('1.0', 'end') def test_multiple_lines(self): text = self.text # Select 2 long lines. text.insert('1.0', self.multiline_test_string) text.tag_add('sel', '2.0', '4.0') self.formatter('ParameterDoesNothing', limit=70) result = text.get('2.0', 'insert') expected = ( " The second line's length is way over the max width. It goes on and\n" " on until it is over 100 characters long. Same thing with the third\n" " line. It is also way over the max width, but FormatParagraph will\n" " fix it.\n") self.assertEqual(result, expected) text.delete('1.0', 'end') def test_comment_block(self): text = self.text # Set cursor ('insert') to '1.0', within block. text.insert('1.0', self.multiline_test_comment) self.formatter('ParameterDoesNothing', limit=70) result = text.get('1.0', 'insert') expected = ( "# The first line is under the max width. The second line's length is\n" "# way over the max width. It goes on and on until it is over 100\n" "# characters long. Same thing with the third line. It is also way over\n" "# the max width, but FormatParagraph will fix it. The fourth line is\n" "# short like the first line.\n") self.assertEqual(result, expected) text.delete('1.0', 'end') # Select line 2, verify line 1 unaffected. text.insert('1.0', self.multiline_test_comment) text.tag_add('sel', '2.0', '3.0') self.formatter('ParameterDoesNothing', limit=70) result = text.get('1.0', 'insert') expected = ( "# The first line is under the max width.\n" "# The second line's length is way over the max width. It goes on and\n" "# on until it is over 100 characters long.\n") self.assertEqual(result, expected) text.delete('1.0', 'end') # The following block worked with EditorWindow but fails with the mock. # Lines 2 and 3 get pasted together even though the previous block left # the previous line alone. More investigation is needed. ## # Select lines 3 and 4 ## text.insert('1.0', self.multiline_test_comment) ## text.tag_add('sel', '3.0', '5.0') ## self.formatter('ParameterDoesNothing') ## result = text.get('3.0', 'insert') ## expected = ( ##"# Same thing with the third line. It is also way over the max width,\n" ##"# but FormatParagraph will fix it. The fourth line is short like the\n" ##"# first line.\n") ## self.assertEqual(result, expected) ## text.delete('1.0', 'end') if __name__ == '__main__': unittest.main(verbosity=2, exit=2)
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