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lib: Add test for composeExtensions

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This commit is contained in:
Shea Levy 2017-04-12 12:40:24 -04:00
parent ae002d6ecb
commit b2c87fbf98
1 changed files with 10 additions and 0 deletions
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10
lib/tests.nix
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@ -277,4 +277,14 @@ runTests {
expected = [ "2001" "db8" "0" "0042" "" "8a2e" "370" "" ];
};
testComposeExtensions = {
expr = let obj = makeExtensible (self: { foo = self.bar; });
f = self: super: { bar = false; baz = true; };
g = self: super: { bar = super.baz or false; };
f_o_g = composeExtensions f g;
composed = obj.extend f_o_g;
in composed.foo;
expected = true;
};
}