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Improve error messages for head/elemAt

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This commit is contained in:
Eelco Dolstra 2024-12-09 16:15:23 +01:00
parent ad296eae2a
commit 8490fba42d
2 changed files with 26 additions and 24 deletions
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14
src/libexpr-tests/error_traces.cc
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@ -691,15 +691,15 @@ namespace nix {
ASSERT_TRACE2("elemAt \"foo\" (-1)",
TypeError,
HintFmt("expected a list but found %s: %s", "a string", Uncolored(ANSI_MAGENTA "\"foo\"" ANSI_NORMAL)),
HintFmt("while evaluating the first argument passed to builtins.elemAt"));
HintFmt("while evaluating the first argument passed to 'builtins.elemAt'"));
ASSERT_TRACE1("elemAt [] (-1)",
Error,
HintFmt("list index %d is out of bounds", -1));
HintFmt("'builtins.elemAt' called with index %d on a list of size %d", -1, 0));
ASSERT_TRACE1("elemAt [\"foo\"] 3",
Error,
HintFmt("list index %d is out of bounds", 3));
HintFmt("'builtins.elemAt' called with index %d on a list of size %d", 3, 1));
}
@ -708,11 +708,11 @@ namespace nix {
ASSERT_TRACE2("head 1",
TypeError,
HintFmt("expected a list but found %s: %s", "an integer", Uncolored(ANSI_CYAN "1" ANSI_NORMAL)),
HintFmt("while evaluating the first argument passed to builtins.elemAt"));
HintFmt("while evaluating the first argument passed to 'builtins.head'"));
ASSERT_TRACE1("head []",
Error,
HintFmt("'head' called on an empty list"));
HintFmt("'builtins.head' called on an empty list"));
}
@ -721,11 +721,11 @@ namespace nix {
ASSERT_TRACE2("tail 1",
TypeError,
HintFmt("expected a list but found %s: %s", "an integer", Uncolored(ANSI_CYAN "1" ANSI_NORMAL)),
HintFmt("while evaluating the first argument passed to builtins.tail"));
HintFmt("while evaluating the first argument passed to 'builtins.tail'"));
ASSERT_TRACE1("tail []",
Error,
HintFmt("'tail' called on an empty list"));
HintFmt("'builtins.tail' called on an empty list"));
}