From 1110808a9d39d4b808aef724c861a2e1a38d2a69 Mon Sep 17 00:00:00 2001
From: Devtools Arcadia <arcadia-devtools@yandex-team.ru>
Date: Mon, 7 Feb 2022 18:08:42 +0300
Subject: intermediate changes ref:cde9a383711a11544ce7e107a78147fb96cc4029

---
 .../python/prompt-toolkit/py2/tests/test_buffer.py | 111 +++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 contrib/python/prompt-toolkit/py2/tests/test_buffer.py

(limited to 'contrib/python/prompt-toolkit/py2/tests/test_buffer.py')

diff --git a/contrib/python/prompt-toolkit/py2/tests/test_buffer.py b/contrib/python/prompt-toolkit/py2/tests/test_buffer.py
new file mode 100644
index 0000000000..a9cff19024
--- /dev/null
+++ b/contrib/python/prompt-toolkit/py2/tests/test_buffer.py
@@ -0,0 +1,111 @@
+from __future__ import unicode_literals
+
+from prompt_toolkit.buffer import Buffer
+
+import pytest
+
+
+@pytest.fixture
+def _buffer():
+    return Buffer()
+
+
+def test_initial(_buffer):
+    assert _buffer.text == ''
+    assert _buffer.cursor_position == 0
+
+
+def test_insert_text(_buffer):
+    _buffer.insert_text('some_text')
+    assert _buffer.text == 'some_text'
+    assert _buffer.cursor_position == len('some_text')
+
+
+def test_cursor_movement(_buffer):
+    _buffer.insert_text('some_text')
+    _buffer.cursor_left()
+    _buffer.cursor_left()
+    _buffer.cursor_left()
+    _buffer.cursor_right()
+    _buffer.insert_text('A')
+
+    assert _buffer.text == 'some_teAxt'
+    assert _buffer.cursor_position == len('some_teA')
+
+
+def test_backspace(_buffer):
+    _buffer.insert_text('some_text')
+    _buffer.cursor_left()
+    _buffer.cursor_left()
+    _buffer.delete_before_cursor()
+
+    assert _buffer.text == 'some_txt'
+    assert _buffer.cursor_position == len('some_t')
+
+
+def test_cursor_up(_buffer):
+    # Cursor up to a line thats longer.
+    _buffer.insert_text('long line1\nline2')
+    _buffer.cursor_up()
+
+    assert _buffer.document.cursor_position == 5
+
+    # Going up when already at the top.
+    _buffer.cursor_up()
+    assert _buffer.document.cursor_position == 5
+
+    # Going up to a line that's shorter.
+    _buffer.reset()
+    _buffer.insert_text('line1\nlong line2')
+
+    _buffer.cursor_up()
+    assert _buffer.document.cursor_position == 5
+
+
+def test_cursor_down(_buffer):
+    _buffer.insert_text('line1\nline2')
+    _buffer.cursor_position = 3
+
+    # Normally going down
+    _buffer.cursor_down()
+    assert _buffer.document.cursor_position == len('line1\nlin')
+
+    # Going down to a line that's storter.
+    _buffer.reset()
+    _buffer.insert_text('long line1\na\nb')
+    _buffer.cursor_position = 3
+
+    _buffer.cursor_down()
+    assert _buffer.document.cursor_position == len('long line1\na')
+
+
+def test_join_next_line(_buffer):
+    _buffer.insert_text('line1\nline2\nline3')
+    _buffer.cursor_up()
+    _buffer.join_next_line()
+
+    assert _buffer.text == 'line1\nline2 line3'
+
+    # Test when there is no '\n' in the text
+    _buffer.reset()
+    _buffer.insert_text('line1')
+    _buffer.cursor_position = 0
+    _buffer.join_next_line()
+
+    assert _buffer.text == 'line1'
+
+
+def test_newline(_buffer):
+    _buffer.insert_text('hello world')
+    _buffer.newline()
+
+    assert _buffer.text == 'hello world\n'
+
+
+def test_swap_characters_before_cursor(_buffer):
+    _buffer.insert_text('hello world')
+    _buffer.cursor_left()
+    _buffer.cursor_left()
+    _buffer.swap_characters_before_cursor()
+
+    assert _buffer.text == 'hello wrold'
-- 
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