Merge pull request #232 from Cube707/DELETE

text: implement DELETE

src/inquirer/render/console/_text.py

@@ -29,6 +29,14 @@ def process_input(self, pressed):
                     self.current = self.current[: n - 1] + self.current[n:]
                 else:
                     self.current = self.current[:-1]
+        elif pressed == key.SUPR:
+            if self.current and self.cursor_offset:
+                n = -self.cursor_offset
+                self.cursor_offset -= 1
+                if n < -1:
+                    self.current = self.current[:n] + self.current[n + 1 :]  # noqa E203
+                else:
+                    self.current = self.current[:n]
         elif pressed == key.LEFT:
             if self.cursor_offset < len(self.current):
                 self.cursor_offset += 1

tests/integration/console_render/test_text.py

@@ -98,7 +98,7 @@ def raise_exc(x, current):
         self.assertInStdout(message)
         self.assertInStdout("Custom error")
 
-    def test_allows_deletion(self):
+    def test_allows_BACKSPACE_deletion(self):
         stdin_array = ["a", key.BACKSPACE, "b", key.ENTER]
         stdin = helper.event_factory(*stdin_array)
         message = "Foo message"
@@ -111,6 +111,19 @@ def test_allows_deletion(self):
 
         self.assertEqual("b", result)
 
+    def test_allows_DELETE_deletion(self):
+        stdin_array = ["a", "b", key.LEFT, key.LEFT, "c", key.SUPR, key.SUPR, key.ENTER]
+        stdin = helper.event_factory(*stdin_array)
+        message = "Foo message"
+        variable = "Bar variable"
+
+        question = questions.Text(variable, message)
+
+        sut = ConsoleRender(event_generator=stdin)
+        result = sut.render(question)
+
+        self.assertEqual("c", result)
+
     def test_cursor_movement(self):
         stdin_array = [
             "a",