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import itertools
import functools
from unittest import TestCase
from .support import handle_all_events, handle_events_narrow_console, code_to_events, prepare_reader
from _pyrepl.console import Event
class TestReader(TestCase):
def assert_screen_equals(self, reader, expected):
actual = reader.calc_screen()
expected = expected.split("\n")
self.assertListEqual(actual, expected)
def test_calc_screen_wrap_simple(self):
events = code_to_events(10 * "a")
reader, _ = handle_events_narrow_console(events)
self.assert_screen_equals(reader, f"{9*"a"}\\\na")
def test_calc_screen_wrap_wide_characters(self):
events = code_to_events(8 * "a" + "樂")
reader, _ = handle_events_narrow_console(events)
self.assert_screen_equals(reader, f"{8*"a"}\\\n樂")
def test_calc_screen_wrap_three_lines(self):
events = code_to_events(20 * "a")
reader, _ = handle_events_narrow_console(events)
self.assert_screen_equals(reader, f"{9*"a"}\\\n{9*"a"}\\\naa")
def test_calc_screen_wrap_three_lines_mixed_character(self):
# fmt: off
code = (
"def f():\n"
f" {8*"a"}\n"
f" {5*"樂"}"
)
# fmt: on
events = code_to_events(code)
reader, _ = handle_events_narrow_console(events)
# fmt: off
self.assert_screen_equals(reader, (
"def f():\n"
f" {7*"a"}\\\n"
"a\n"
f" {3*"樂"}\\\n"
"樂樂"
))
# fmt: on
def test_calc_screen_backspace(self):
events = itertools.chain(
code_to_events("aaa"),
[
Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
],
)
reader, _ = handle_all_events(events)
self.assert_screen_equals(reader, "aa")
def test_calc_screen_wrap_removes_after_backspace(self):
events = itertools.chain(
code_to_events(10 * "a"),
[
Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
],
)
reader, _ = handle_events_narrow_console(events)
self.assert_screen_equals(reader, 9 * "a")
def test_calc_screen_backspace_in_second_line_after_wrap(self):
events = itertools.chain(
code_to_events(11 * "a"),
[
Event(evt="key", data="backspace", raw=bytearray(b"\x7f")),
],
)
reader, _ = handle_events_narrow_console(events)
self.assert_screen_equals(reader, f"{9*"a"}\\\na")
def test_setpos_for_xy_simple(self):
events = code_to_events("11+11")
reader, _ = handle_all_events(events)
reader.setpos_from_xy(0, 0)
self.assertEqual(reader.pos, 0)
def test_setpos_from_xy_multiple_lines(self):
# fmt: off
code = (
"def foo():\n"
" return 1"
)
# fmt: on
events = code_to_events(code)
reader, _ = handle_all_events(events)
reader.setpos_from_xy(2, 1)
self.assertEqual(reader.pos, 13)
def test_setpos_from_xy_after_wrap(self):
# fmt: off
code = (
"def foo():\n"
" hello"
)
# fmt: on
events = code_to_events(code)
reader, _ = handle_events_narrow_console(events)
reader.setpos_from_xy(2, 2)
self.assertEqual(reader.pos, 13)
def test_setpos_fromxy_in_wrapped_line(self):
# fmt: off
code = (
"def foo():\n"
" hello"
)
# fmt: on
events = code_to_events(code)
reader, _ = handle_events_narrow_console(events)
reader.setpos_from_xy(0, 1)
self.assertEqual(reader.pos, 9)
def test_up_arrow_after_ctrl_r(self):
events = iter(
[
Event(evt="key", data="\x12", raw=bytearray(b"\x12")),
Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
]
)
reader, _ = handle_all_events(events)
self.assert_screen_equals(reader, "")
def test_newline_within_block_trailing_whitespace(self):
# fmt: off
code = (
"def foo():\n"
"a = 1\n"
)
# fmt: on
events = itertools.chain(
code_to_events(code),
[
# go to the end of the first line
Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
Event(evt="key", data="up", raw=bytearray(b"\x1bOA")),
Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
# new lines in-block shouldn't terminate the block
Event(evt="key", data="\n", raw=bytearray(b"\n")),
Event(evt="key", data="\n", raw=bytearray(b"\n")),
# end of line 2
Event(evt="key", data="down", raw=bytearray(b"\x1bOB")),
Event(evt="key", data="\x05", raw=bytearray(b"\x1bO5")),
# a double new line in-block should terminate the block
# even if its followed by whitespace
Event(evt="key", data="\n", raw=bytearray(b"\n")),
Event(evt="key", data="\n", raw=bytearray(b"\n")),
],
)
no_paste_reader = functools.partial(prepare_reader, paste_mode=False)
reader, _ = handle_all_events(events, prepare_reader=no_paste_reader)
expected = (
"def foo():\n"
" \n"
" \n"
" a = 1\n"
" \n"
" " # HistoricalReader will trim trailing whitespace
)
self.assert_screen_equals(reader, expected)
self.assertTrue(reader.finished)
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