tvl-depot/z-yants-tests.nix
Vincent Ambo f6635fec98 feat: Add rough initial version of sum types
Sum types are represented as attribute sets with a single key in them.
2019-08-28 14:36:55 +01:00

71 lines
1.5 KiB
Nix

with (import ./yants.nix {});
with builtins;
# Note: Derivations are not included in the tests below as they cause
# issues with deepSeq.
deepSeq rec {
# Test that all primitive types match
primitives = [
(int 15)
(bool false)
(float 13.37)
(string "Hello!")
(function (x: x * 2))
];
# Test that polymorphic types work as intended
poly = [
(option int null)
(list string [ "foo" "bar" ])
(either int float 42)
];
# Test that structures work as planned.
person = struct "person" {
name = string;
age = int;
contact = option (struct {
email = string;
phone = option string;
});
};
testPerson = person {
name = "Brynhjulf";
age = 42;
contact.email = "brynhjulf@yants.nix";
};
# Test enum definitions & matching
colour = enum "colour" [ "red" "blue" "green" ];
testMatch = colour.match "red" {
red = "It is in fact red!";
blue = throw "It should not be blue!";
green = throw "It should not be green!";
};
# Test sum type definitions
creature = sum "creature" {
human = struct {
name = string;
age = option int;
};
pet = enum "pet" [ "dog" "lizard" "cat" ];
};
testSum = creature {
human = {
name = "Brynhjulf";
age = 42;
};
};
# Test curried function definitions
func = defun [ string int string ]
(name: age: "${name} is ${toString age} years old");
testFunc = func "Brynhjulf" 42;
} "All tests passed!\n"