Issue #18292: Idle - test AutoExpand. Patch by Saihadhav Heblikar.
diff --git a/Lib/idlelib/AutoExpand.py b/Lib/idlelib/AutoExpand.py
index 9e93d57..7059054 100644
--- a/Lib/idlelib/AutoExpand.py
+++ b/Lib/idlelib/AutoExpand.py
@@ -1,3 +1,17 @@
+'''Complete the current word before the cursor with words in the editor.
+
+Each menu selection or shortcut key selection replaces the word with a
+different word with the same prefix. The search for matches begins
+before the target and moves toward the top of the editor. It then starts
+after the cursor and moves down. It then returns to the original word and
+the cycle starts again.
+
+Changing the current text line or leaving the cursor in a different
+place before requesting the next selection causes AutoExpand to reset
+its state.
+
+This is an extension file and there is only one instance of AutoExpand.
+'''
import string
import re
@@ -20,6 +34,7 @@
self.state = None
def expand_word_event(self, event):
+ "Replace the current word with the next expansion."
curinsert = self.text.index("insert")
curline = self.text.get("insert linestart", "insert lineend")
if not self.state:
@@ -46,6 +61,7 @@
return "break"
def getwords(self):
+ "Return a list of words that match the prefix before the cursor."
word = self.getprevword()
if not word:
return []
@@ -76,8 +92,13 @@
return words
def getprevword(self):
+ "Return the word prefix before the cursor."
line = self.text.get("insert linestart", "insert")
i = len(line)
while i > 0 and line[i-1] in self.wordchars:
i = i-1
return line[i:]
+
+if __name__ == '__main__':
+ import unittest
+ unittest.main('idlelib.idle_test.test_autoexpand', verbosity=2)