Fix test_replace_pos_args_empty_sys_argv

[hexagonrecursion]

test_replace_pos_args_empty_sys_argv was identical to test_replace_pos_args_none_sys_argv I assume this is not intentional. This PR changes test_replace_pos_args_empty_sys_argv to test pos_args=[] instead of pos_args=None

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[codecov]

Codecov Report

Merging #1936 (3259ef9) into rewrite (b88679a) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           rewrite    #1936   +/-   ##
========================================
  Coverage    99.82%   99.82%           
========================================
  Files          143      143           
  Lines         7839     7839           
  Branches       789      789           
========================================
  Hits          7825     7825           
  Misses           3        3           
  Partials        11       11           

Flag	Coverage Δ
tests	99.82% <100.00%> (ø)

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Impacted Files	Coverage Δ
.../config/loader/ini/replace/test_replace_posargs.py	100.00% <100.00%> (ø)

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[gaborbernat]

Why? 🤔

[hexagonrecursion]

Maybe I'm missing something, but the tests look exactly the same to me. Current rewrite:

tox/tests/config/loader/ini/replace/test_replace_posargs.py

Lines 8 to 15 in b88679a

	def test_replace_pos_args_none_sys_argv(replace_one: ReplaceOne) -> None:
	result = replace_one("{posargs}", None)
	assert result == ""
	def test_replace_pos_args_empty_sys_argv(replace_one: ReplaceOne) -> None:
	result = replace_one("{posargs}", None)
	assert result == ""

I just assumed that one of them was meant to test None and the other []

[gaborbernat]