Jade Lovelace
faf00ad022
This commit makes Lix include the summarized content of the value being
indexed when it is bad.
lix/lix2 » nix eval --expr '{x.y = 2;}' 'x.y.z'
error: the value being indexed in the selection path 'x.y.z' at 'x.y' should be a set but is an integer: 2
lix/lix2 » nix eval --expr '{x.y = { a = 3; };}' 'x.y.z'
error: attribute 'z' in selection path 'x.y.z' not found inside path 'x.y', whose contents are: { a = 3; }
Did you mean a?
lix/lix2 » nix eval --expr '{x.y = { a = 3; };}' 'x.y.1'
error: the expression selected by the selection path 'x.y.1' should be a list but is a set: { a = 3; }
Change-Id: I3202aba0e437e00b4c6d3ee287a2d9a7c6892dbf
57 lines
2.0 KiB
Python
57 lines
2.0 KiB
Python
from functional2.testlib.fixtures import Nix
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import pytest
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from typing import NamedTuple
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from textwrap import dedent
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class ShouldError(NamedTuple):
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expr: str
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attr: str
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error: str
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ERR_CASES: list[ShouldError] = [
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# FIXME(jade): expect-test system for pytest that allows for updating these easily
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ShouldError('{}', '"x',
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"""error: missing closing quote in selection path '"x'"""),
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ShouldError(
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'[]', 'x',
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"""error: the value being indexed in the selection path 'x' at '' should be a set but is a list: [ ]"""
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),
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ShouldError(
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'{}', '1',
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"""error: the expression selected by the selection path '1' should be a list but is a set: { }"""
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),
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ShouldError('{}', '.',
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"""error: empty attribute name in selection path '.'"""),
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ShouldError('{ x."" = 2; }', 'x.""',
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"""error: empty attribute name in selection path 'x.""'"""),
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ShouldError('{ x."".y = 2; }', 'x."".y',
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"""error: empty attribute name in selection path 'x."".y'"""),
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ShouldError(
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'[]', '1',
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"""error: list index 1 in selection path '1' is out of range for list [ ]"""
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),
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ShouldError(
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'{ x.y = { z = 2; a = 3; }; }', 'x.y.c',
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dedent("""\
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error: attribute 'c' in selection path 'x.y.c' not found inside path 'x.y', whose contents are: { a = 3; z = 2; }
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Did you mean one of a or z?""")
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),
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]
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# I do not know why it does this, but I guess it makes sense as allowing a tool
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# to pass -A unconditionally and then allow a blank attribute to mean the whole
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# thing
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def test_attrpath_accepts_empty_attr_as_no_attr(nix: Nix):
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assert nix.nix_instantiate(['--eval', '--expr', '{}', '-A',
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'']).run().ok().stdout_plain == '{ }'
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@pytest.mark.parametrize(['expr', 'attr', 'error'], ERR_CASES)
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def test_attrpath_error(nix: Nix, expr: str, attr: str, error: str):
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res = nix.nix_instantiate(['--eval', '--expr', expr, '-A', attr]).run()
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assert res.expect(1).stderr_plain == error
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