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import os
import pytest
from pynvim.api import Nvim, NvimError
def test_repr(vim: Nvim) -> None:
assert repr(vim.current.buffer) == "<Buffer(handle=1)>"
def test_get_length(vim: Nvim) -> None:
assert len(vim.current.buffer) == 1
vim.current.buffer.append('line')
assert len(vim.current.buffer) == 2
vim.current.buffer.append('line')
assert len(vim.current.buffer) == 3
vim.current.buffer[-1] = None
assert len(vim.current.buffer) == 2
vim.current.buffer[-1] = None
vim.current.buffer[-1] = None
# There's always at least one line
assert len(vim.current.buffer) == 1
def test_get_set_del_line(vim: Nvim) -> None:
assert vim.current.buffer[0] == ''
vim.current.buffer[0] = 'line1'
assert vim.current.buffer[0] == 'line1'
vim.current.buffer[0] = 'line2'
assert vim.current.buffer[0] == 'line2'
vim.current.buffer[0] = None
assert vim.current.buffer[0] == ''
# __delitem__
vim.current.buffer[:] = ['line1', 'line2', 'line3']
assert vim.current.buffer[2] == 'line3'
del vim.current.buffer[0]
assert vim.current.buffer[0] == 'line2'
assert vim.current.buffer[1] == 'line3'
del vim.current.buffer[-1]
assert vim.current.buffer[0] == 'line2'
assert len(vim.current.buffer) == 1
def test_get_set_del_slice(vim: Nvim) -> None:
assert vim.current.buffer[:] == ['']
# Replace buffer
vim.current.buffer[:] = ['a', 'b', 'c']
assert vim.current.buffer[:] == ['a', 'b', 'c']
assert vim.current.buffer[1:] == ['b', 'c']
assert vim.current.buffer[1:2] == ['b']
assert vim.current.buffer[1:1] == []
assert vim.current.buffer[:-1] == ['a', 'b']
assert vim.current.buffer[1:-1] == ['b']
assert vim.current.buffer[-2:] == ['b', 'c']
vim.current.buffer[1:2] = ['a', 'b', 'c']
assert vim.current.buffer[:] == ['a', 'a', 'b', 'c', 'c']
vim.current.buffer[-1:] = ['a', 'b', 'c']
assert vim.current.buffer[:] == ['a', 'a', 'b', 'c', 'a', 'b', 'c']
vim.current.buffer[:-3] = None
assert vim.current.buffer[:] == ['a', 'b', 'c']
vim.current.buffer[:] = None
assert vim.current.buffer[:] == ['']
# __delitem__
vim.current.buffer[:] = ['a', 'b', 'c']
del vim.current.buffer[:]
assert vim.current.buffer[:] == ['']
vim.current.buffer[:] = ['a', 'b', 'c']
del vim.current.buffer[:1]
assert vim.current.buffer[:] == ['b', 'c']
del vim.current.buffer[:-1]
assert vim.current.buffer[:] == ['c']
def test_vars(vim: Nvim) -> None:
vim.current.buffer.vars['python'] = [1, 2, {'3': 1}]
assert vim.current.buffer.vars['python'] == [1, 2, {'3': 1}]
assert vim.eval('b:python') == [1, 2, {'3': 1}]
assert vim.current.buffer.vars.get('python') == [1, 2, {'3': 1}]
del vim.current.buffer.vars['python']
with pytest.raises(KeyError):
vim.current.buffer.vars['python']
assert vim.eval('exists("b:python")') == 0
with pytest.raises(KeyError):
del vim.current.buffer.vars['python']
assert vim.current.buffer.vars.get('python', 'default') == 'default'
def test_api(vim: Nvim) -> None:
vim.current.buffer.api.set_var('myvar', 'thetext')
assert vim.current.buffer.api.get_var('myvar') == 'thetext'
assert vim.eval('b:myvar') == 'thetext'
vim.current.buffer.api.set_lines(0, -1, True, ['alpha', 'beta'])
assert vim.current.buffer.api.get_lines(0, -1, True) == ['alpha', 'beta']
assert vim.current.buffer[:] == ['alpha', 'beta']
def test_options(vim: Nvim) -> None:
assert vim.current.buffer.options['shiftwidth'] == 8
vim.current.buffer.options['shiftwidth'] = 4
assert vim.current.buffer.options['shiftwidth'] == 4
# global-local option
global_define = vim.options['define']
vim.current.buffer.options['define'] = 'test'
assert vim.current.buffer.options['define'] == 'test'
# Doesn't change the global value
assert vim.options['define'] == global_define
with pytest.raises(KeyError) as excinfo:
vim.current.buffer.options['doesnotexist']
assert excinfo.value.args == ("Invalid option name: 'doesnotexist'",)
def test_number(vim: Nvim) -> None:
curnum = vim.current.buffer.number
vim.command('new')
assert vim.current.buffer.number == curnum + 1
vim.command('new')
assert vim.current.buffer.number == curnum + 2
def test_name(vim: Nvim) -> None:
vim.command('new')
assert vim.current.buffer.name == ''
new_name = vim.eval('resolve(tempname())')
vim.current.buffer.name = new_name
assert vim.current.buffer.name == new_name
vim.command('silent w!')
assert os.path.isfile(new_name)
os.unlink(new_name)
def test_valid(vim: Nvim) -> None:
vim.command('new')
buffer = vim.current.buffer
assert buffer.valid
vim.command('bw!')
assert not buffer.valid
def test_append(vim: Nvim) -> None:
vim.current.buffer.append('a')
assert vim.current.buffer[:] == ['', 'a']
vim.current.buffer.append('b', 0)
assert vim.current.buffer[:] == ['b', '', 'a']
vim.current.buffer.append(['c', 'd'])
assert vim.current.buffer[:] == ['b', '', 'a', 'c', 'd']
vim.current.buffer.append(['c', 'd'], 2)
assert vim.current.buffer[:] == ['b', '', 'c', 'd', 'a', 'c', 'd']
vim.current.buffer.append(b'bytes')
assert vim.current.buffer[:] == ['b', '', 'c', 'd', 'a', 'c', 'd', 'bytes']
def test_mark(vim: Nvim) -> None:
vim.current.buffer.append(['a', 'bit of', 'text'])
vim.current.window.cursor = (3, 4)
vim.command('mark V')
assert vim.current.buffer.mark('V') == (3, 0)
def test_invalid_utf8(vim: Nvim) -> None:
vim.command('normal "=printf("%c", 0xFF)\np')
assert vim.eval("char2nr(getline(1))") == 0xFF
assert vim.current.buffer[:] == ['\udcff']
vim.current.line += 'x'
assert vim.eval("getline(1)", decode=False) == '\udcffx'
assert vim.current.buffer[:] == ['\udcffx']
def test_get_exceptions(vim: Nvim) -> None:
with pytest.raises(KeyError) as excinfo:
vim.current.buffer.options['invalid-option']
assert not isinstance(excinfo.value, NvimError)
assert excinfo.value.args == ("Invalid option name: 'invalid-option'",)
def test_set_items_for_range(vim: Nvim) -> None:
vim.current.buffer[:] = ['a', 'b', 'c', 'd', 'e']
r = vim.current.buffer.range(1, 3)
r[1:3] = ['foo'] * 3
assert vim.current.buffer[:] == ['a', 'foo', 'foo', 'foo', 'd', 'e']
# NB: we can't easily test the effect of this. But at least run the lua
# function sync, so we know it runs without runtime error with simple args.
def test_update_highlights(vim: Nvim) -> None:
vim.current.buffer[:] = ['a', 'b', 'c']
src_id = vim.new_highlight_source()
vim.current.buffer.update_highlights(
src_id, [("Comment", 0, 0, -1), ("String", 1, 0, 1)], clear=True, async_=False
)
def test_buffer_inequality(vim: Nvim) -> None:
b = vim.current.buffer
assert not (b != vim.current.buffer)
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