Add test for replace in selection (test issue spyder-ide#5494)

spyder/widgets/tests/test_editor.py

@@ -334,6 +334,30 @@ def test_replace_plain_regex(editor_find_replace_bot):
     qtbot.keyPress(finder.replace_text, Qt.Key_Return)
     assert editor.toPlainText()[0:-1] == expected_new_text
 
+
+def test_selection_escape_characters(editor_find_replace_bot):
+    editor_stack, editor, finder, qtbot = editor_find_replace_bot
+    expected_new_text = ('spam bacon\n'
+                         'spam sausage\n'
+                         'spam egg\n'
+                         '\\n \\t some escape characters')
+    qtbot.keyClicks(editor, '\\n \\t escape characters')
+
+    finder.show()
+    finder.show_replace()
+    qtbot.keyClicks(finder.search_text, 'escape')
+    qtbot.keyClicks(finder.replace_text, 'some escape')
+
+    # Select last line
+    cursor = editor.textCursor()
+    cursor.select(QTextCursor.LineUnderCursor)
+    assert cursor.selection().toPlainText() == "\\n \\t escape characters"
+
+    #replace
+    finder.replace_find_selection()
+    assert editor.toPlainText() == expected_new_text
+
+
 def test_advance_cell(editor_cells_bot):
     editor_stack, editor, qtbot = editor_cells_bot