| d7bc84f6 |
import * as uut from "../index.js";
export function iotaTests({ describe, test, expect }) {
describe("iota", () => {
test("returns the right number of items", () => {
for (let items = 0; items < 10; items++) {
expect(() => uut.iota(items)).toHaveLength(items);
}
});
test("returns the right number of items, independently of start", () => {
for (let start = 0; start < 10; start++) {
expect(() => uut.iota(5, start)).toHaveLength(5);
}
expect(() => uut.iota(5, 2.3)).toHaveLength(5);
});
test("returns the right start, if count > 0", () => {
expect(() => uut.iota(0, 5)).toEqual([]);
for (let items = 1; items < 10; items++) {
expect(({ items }) => uut.iota(items, 5), { items }).toHaveProperty(
"0",
5
);
expect(({ items }) => uut.iota(items, -5), { items }).toHaveProperty(
"0",
-5
);
expect(({ items }) => uut.iota(items, 2.5), { items }).toHaveProperty(
"0",
2.5
);
expect(({ items }) => uut.iota(items, NaN), { items }).toHaveProperty(
"0",
NaN
);
expect(({ items }) => uut.iota(items, Infinity), {
items,
}).toHaveProperty("0", Infinity);
expect(({ items }) => uut.iota(items, -Infinity), {
items,
}).toHaveProperty("0", -Infinity);
}
});
});
}
export function overTests({ describe, test, expect }) {
describe("over", () => {
test("applies transform to each element", () => {
expect(() => uut.over((v) => v + 1)([1, 2, 3])).toEqual([2, 3, 4]);
});
test("preserves length", () => {
for (let items = 0; items < 10; items++) {
const inp = uut.iota(items);
expect(() => uut.over((v) => v)(inp)).toHaveLength(items);
}
});
});
}
export function juxtTests({ describe, test, expect }) {
describe("juxt", () => {
test("works", () => {
expect(() =>
uut.juxt(
(v) => v + 1,
(v) => v * 2,
(v) => v / 2,
(v) => v - 2
)(6)
).toEqual([7, 12, 3, 4]);
});
test("runs each transform", () => {
for (let items = 1; items < 10; items++) {
const inp = uut.iota(items).map(() => (v) => v);
expect(() => uut.juxt(...inp)({})).toHaveLength(items);
}
});
});
}
export function onTests({ describe, test, expect }) {
describe("on", () => {
test("works", () => {
expect(() =>
uut.on(
(v) => v + 1,
({ a }) => a
)({ a: 2 })
).toEqual(3);
});
});
}
export function applyingTests({ describe, test, expect }) {
describe("applying", () => {
test("works", () => {
expect(() =>
uut.applying(
(...args) => args.reduce((a, b) => a + b, 0),
2,
3
)([4, 5, 6])
).toEqual(2 + 3 + 4 + 5 + 6);
});
});
}
export function filterTests({ describe, test, expect }) {
describe("filter", () => {
test("works", () => {
expect(() => uut.filter((a, b) => a < b, 6)([4, 5, 6])).toEqual([4, 5]);
});
});
}
export function includeTests({ describe, test, expect }) {
describe("include", () => {
test("works", () => {
expect(() => uut.include((a) => a < 6)([4, 5, 6])).toEqual([4, 5]);
});
});
}
export function excludeTests({ describe, test, expect }) {
describe("exclude", () => {
test("works", () => {
expect(() => uut.exclude((a, b) => a < 6)([4, 5, 6])).toEqual([6]);
});
});
}
export function zip_withTests({ describe, test, expect }) {
describe("zip_with", () => {
test("works", () => {
expect(() =>
uut.zip_with((a, b) => a < b)([
[4, 5, 6],
[6, 5, 4],
])
).toEqual([true, false, false]);
expect(() =>
uut.zip_with((a, b, c) => a + b + c)([
[4, 5, 6],
[6, 5, 4],
[0, 0, 0],
])
).toEqual([10, 10, 10]);
});
});
}
export function elementTests({ describe, test, expect }) {
describe("element", () => {
test("works", () => {
expect(() => uut.element(0)([1])).toEqual(1);
});
});
}
export function keyTests({ describe, test, expect }) {
describe("key", () => {
test("works", () => {
expect(() => uut.key(0)([1])).toEqual(1);
expect(() => uut.key("a")({ a: 1 })).toEqual(1);
});
});
}
export function eqTests({ describe, test, expect }) {
describe("eq", () => {
test("works", () => {
expect(() => uut.eq(0)(0)).toBeTruthy();
expect(() => uut.eq(0, (a, b) => a + 1 === b - 1)(2)).toBeTruthy();
});
});
}
export function applicable_whenTests({ describe, test, expect }) {
describe("applicable_when", () => {
test("works", () => {
expect(() =>
uut.applicable_when(
() => true,
(v) => v + 1
)(0)
).toEqual(1);
expect(() =>
uut.applicable_when(
() => false,
(v) => v + 1
)(0)
).toEqual(0);
});
});
}
export function matches_regexTests({ describe, test, expect }) {
describe("matches_regex", () => {
test("works", () => {
expect(() => uut.matches_regex(/^a/)("a")).toBeTruthy();
expect(() => uut.matches_regex(/^a/)("b")).toBeFalsy();
expect(() => uut.matches_regex(/a/)("ba")).toBeTruthy();
expect(() =>
uut.matches_regex({
test() {
return true;
},
})()
).toEqual(true);
expect(() =>
uut.matches_regex({
test() {
return false;
},
})()
).toEqual(false);
});
});
}
export function complementTests({ describe, test, expect }) {
describe("complement", () => {
test("works", () => {
expect(() => uut.complement(() => true)()).toEqual(false);
expect(() => uut.complement(() => false)()).toEqual(true);
expect(() => uut.complement((a, b) => a < b)(1, 2)).toEqual(false);
expect(() => uut.complement((a, b) => a < b)(1, 1)).toEqual(true);
expect(() => uut.complement((a, b) => a < b)(2, 1)).toEqual(true);
});
});
}
export function pickTests({ describe, test, expect }) {
describe("pick", () => {
test("works", () => {
expect(() => uut.pick({ a: 1, b: 2, c: 3 })(["a", "c"])).toEqual([1, 3]);
});
});
}
/*
(funcall (on (alexandria:compose
(over (transform-tail (over (slice 1))))
(compress-runs :collector 'combine-matching-lists))
(alexandria:compose
(over (juxt (element 0)
'identity))
(sorted 'char<
:key (element 0))))
'("January" "February" "March" "April"
"May" "June" "July" "August"
"September" "October" "November" "December"))
*/
|
| d7bc84f6 |
});
});
}
function composedTests({ describe, test, expect }) {
describe("compose", () => {
test("sample", () => {
expect(() =>
uut.compose(
(v) => v + 1,
(v) => v * 2,
(v) => v + 1
)(4)
).toEqual(11);
(({
combine_matching_lists,
compose,
compress_runs,
element,
juxt,
on,
over,
slice,
sorted,
transform_tail,
}) => {
expect(() =>
on(
compose(
over(transform_tail(over(slice(1)))),
compress_runs({ collector: combine_matching_lists })
),
compose(
over(juxt(element(0), (x) => x)),
sorted((a, b) => a < b, element(0))
)
)([
"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December",
])
).toEqual([
["A", "pril", "ugust"],
["D", "ecember"],
["F", "ebruary"],
["J", "anuary", "une", "uly"],
["M", "arch", "ay"],
["N", "ovember"],
["O", "ctober"],
["S", "eptember"],
]);
})(uut);
});
});
}
/**
|