f59ab9aba5
As a complementation to builtins.functionArgs this function checks if
the function has a set pattern that contains an ellipsis
(i. e. `{ [arg, [ arg1, [ … ]]] ... }:`). The implementation of this is
pretty cursed however since there is no clean way to do this in vanilla
nix: We need to match on the output of builtins.toXML which does try to
serialize functions by outputting their argument and information about
it (whether it is a normal argument or a attribute set pattern, in the
latter case it also serialize every component of the pattern).
Change-Id: I0f33721811a3180cec205a0c98e6d92e10e92075
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2950
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
29 lines
673 B
Nix
29 lines
673 B
Nix
{ depot, ... }:
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let
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inherit (depot.nix.runTestsuite)
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runTestsuite
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it
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assertEq
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;
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inherit (depot.users.sterni.nix)
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fun
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;
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hasEllipsisTests = it "checks fun.hasEllipsis" [
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(assertEq "Malicious string" false
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(fun.hasEllipsis (builtins.toXML ({ foo, ... }: 12))))
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(assertEq "No function" false
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(fun.hasEllipsis 23))
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(assertEq "No attribute set pattern" false
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(fun.hasEllipsis (a: a + 2)))
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(assertEq "No ellipsis" false
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(fun.hasEllipsis ({ foo, bar }: foo + bar)))
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(assertEq "Ellipsis" true
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(fun.hasEllipsis ({ depot, pkgs, ... }: 42)))
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];
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in
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runTestsuite "nix.fun" [
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hasEllipsisTests
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]
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