tvl-depot/nix/tag/tests.nix
Vincent Ambo aa122cbae7 style: format entire depot with nixpkgs-fmt
This CL can be used to compare the style of nixpkgs-fmt against other
formatters (nixpkgs, alejandra).

Change-Id: I87c6abff6bcb546b02ead15ad0405f81e01b6d9e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4397
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: wpcarro <wpcarro@gmail.com>
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: kanepyork <rikingcoding@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: cynthia <cynthia@tvl.fyi>
Reviewed-by: edef <edef@edef.eu>
Reviewed-by: eta <tvl@eta.st>
Reviewed-by: grfn <grfn@gws.fyi>
2022-01-31 16:11:53 +00:00

94 lines
2 KiB
Nix

{ depot, lib, verifyTag, discr, discrDef, match, matchLam }:
let
inherit (depot.nix.runTestsuite)
runTestsuite
assertEq
it
;
isTag-test = it "checks whether something is a tag" [
(assertEq "is Tag"
(verifyTag { foo = "bar"; })
{
isTag = true;
name = "foo";
val = "bar";
errmsg = null;
})
(assertEq "is not Tag"
(removeAttrs (verifyTag { foo = "bar"; baz = 42; }) [ "errmsg" ])
{
isTag = false;
name = null;
val = null;
})
];
discr-test = it "can discr things" [
(assertEq "id"
(discr [
{ a = lib.const true; }
] "x")
{ a = "x"; })
(assertEq "bools here, ints there"
(discr [
{ bool = lib.isBool; }
{ int = lib.isInt; }
] 25)
{ int = 25; })
(assertEq "bools here, ints there 2"
(discr [
{ bool = lib.isBool; }
{ int = lib.isInt; }
]
true)
{ bool = true; })
(assertEq "fallback to default"
(discrDef "def" [
{ bool = lib.isBool; }
{ int = lib.isInt; }
] "foo")
{ def = "foo"; })
];
match-test = it "can match things" [
(assertEq "match example"
(
let
success = { res = 42; };
failure = { err = "no answer"; };
matcher = {
res = i: i + 1;
err = _: 0;
};
in
{
one = match success matcher;
two = match failure matcher;
}
)
{
one = 43;
two = 0;
})
(assertEq "matchLam & pipe"
(lib.pipe { foo = 42; } [
(matchLam {
foo = i: if i < 23 then { small = i; } else { big = i; };
bar = _: { small = 5; };
})
(matchLam {
small = i: "yay it was small";
big = i: "whoo it was big!";
})
])
"whoo it was big!")
];
in
runTestsuite "tag" [
isTag-test
discr-test
match-test
]