|
| 1 | +from __future__ import unicode_literals |
| 2 | + |
| 3 | +from prompt_toolkit.buffer import Buffer |
| 4 | + |
| 5 | +import pytest |
| 6 | + |
| 7 | + |
| 8 | +@pytest.fixture |
| 9 | +def _buffer(): |
| 10 | + return Buffer() |
| 11 | + |
| 12 | + |
| 13 | +def test_initial(_buffer): |
| 14 | + assert _buffer.text == '' |
| 15 | + assert _buffer.cursor_position == 0 |
| 16 | + |
| 17 | + |
| 18 | +def test_insert_text(_buffer): |
| 19 | + _buffer.insert_text('some_text') |
| 20 | + assert _buffer.text == 'some_text' |
| 21 | + assert _buffer.cursor_position == len('some_text') |
| 22 | + |
| 23 | + |
| 24 | +def test_cursor_movement(_buffer): |
| 25 | + _buffer.insert_text('some_text') |
| 26 | + _buffer.cursor_left() |
| 27 | + _buffer.cursor_left() |
| 28 | + _buffer.cursor_left() |
| 29 | + _buffer.cursor_right() |
| 30 | + _buffer.insert_text('A') |
| 31 | + |
| 32 | + assert _buffer.text == 'some_teAxt' |
| 33 | + assert _buffer.cursor_position == len('some_teA') |
| 34 | + |
| 35 | + |
| 36 | +def test_backspace(_buffer): |
| 37 | + _buffer.insert_text('some_text') |
| 38 | + _buffer.cursor_left() |
| 39 | + _buffer.cursor_left() |
| 40 | + _buffer.delete_before_cursor() |
| 41 | + |
| 42 | + assert _buffer.text == 'some_txt' |
| 43 | + assert _buffer.cursor_position == len('some_t') |
| 44 | + |
| 45 | + |
| 46 | +def test_cursor_up(_buffer): |
| 47 | + # Cursor up to a line thats longer. |
| 48 | + _buffer.insert_text('long line1\nline2') |
| 49 | + _buffer.cursor_up() |
| 50 | + |
| 51 | + assert _buffer.document.cursor_position == 5 |
| 52 | + |
| 53 | + # Going up when already at the top. |
| 54 | + _buffer.cursor_up() |
| 55 | + assert _buffer.document.cursor_position == 5 |
| 56 | + |
| 57 | + # Going up to a line that's shorter. |
| 58 | + _buffer.reset() |
| 59 | + _buffer.insert_text('line1\nlong line2') |
| 60 | + |
| 61 | + _buffer.cursor_up() |
| 62 | + assert _buffer.document.cursor_position == 5 |
| 63 | + |
| 64 | + |
| 65 | +def test_cursor_down(_buffer): |
| 66 | + _buffer.insert_text('line1\nline2') |
| 67 | + _buffer.cursor_position = 3 |
| 68 | + |
| 69 | + # Normally going down |
| 70 | + _buffer.cursor_down() |
| 71 | + assert _buffer.document.cursor_position == len('line1\nlin') |
| 72 | + |
| 73 | + # Going down to a line that's storter. |
| 74 | + _buffer.reset() |
| 75 | + _buffer.insert_text('long line1\na\nb') |
| 76 | + _buffer.cursor_position = 3 |
| 77 | + |
| 78 | + _buffer.cursor_down() |
| 79 | + assert _buffer.document.cursor_position == len('long line1\na') |
| 80 | + |
| 81 | + |
| 82 | +def test_join_next_line(_buffer): |
| 83 | + _buffer.insert_text('line1\nline2\nline3') |
| 84 | + _buffer.cursor_up() |
| 85 | + _buffer.join_next_line() |
| 86 | + |
| 87 | + assert _buffer.text == 'line1\nline2 line3' |
| 88 | + |
| 89 | + # Test when there is no '\n' in the text |
| 90 | + _buffer.reset() |
| 91 | + _buffer.insert_text('line1') |
| 92 | + _buffer.cursor_position = 0 |
| 93 | + _buffer.join_next_line() |
| 94 | + |
| 95 | + assert _buffer.text == 'line1' |
| 96 | + |
| 97 | + |
| 98 | +def test_newline(_buffer): |
| 99 | + _buffer.insert_text('hello world') |
| 100 | + _buffer.newline() |
| 101 | + |
| 102 | + assert _buffer.text == 'hello world\n' |
| 103 | + |
| 104 | + |
| 105 | +def test_swap_characters_before_cursor(_buffer): |
| 106 | + _buffer.insert_text('hello world') |
| 107 | + _buffer.cursor_left() |
| 108 | + _buffer.cursor_left() |
| 109 | + _buffer.swap_characters_before_cursor() |
| 110 | + |
| 111 | + assert _buffer.text == 'hello wrold' |
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