Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

feat: Add lack stuffs and Enforce tests for Tuple #250

Merged
merged 5 commits into from
Aug 1, 2024
Merged

feat: Add lack stuffs and Enforce tests for Tuple #250

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
bf07262
Add bifoldMap export
MikuroXina Jul 28, 2024
e9b5623
Add applicative for Tuple
MikuroXina Jul 31, 2024
ae3d1b1
Add monad for Tuple
MikuroXina Jul 31, 2024
b48ac42
Add duplicate and comonad for Tuple
MikuroXina Aug 1, 2024
a53437f
Add tests for Tuple
MikuroXina Aug 1, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
399 changes: 399 additions & 0 deletions src/tuple.test.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,399 @@
import { assertEquals } from "../deps.ts";
import { Array, Lazy, Number, Option, Tuple } from "../mod.ts";
import { compose, id } from "./func.ts";
import { equal, greater, less, type Ordering } from "./ordering.ts";
import { unwrap } from "./result.ts";
import {
decU32Be,
decUtf8,
encU32Be,
encUtf8,
runCode,
runDecoder,
} from "./serial.ts";
import { stringEq } from "./type-class/eq.ts";
import { maxMonoid } from "./type-class/monoid.ts";
import { stringOrd } from "./type-class/ord.ts";
import { nonNanOrd } from "./type-class/ord.ts";
import { semiGroupSymbol } from "./type-class/semi-group.ts";

Deno.test("partial equality", () => {
const equality = Tuple.partialEq({
equalityA: stringEq,
equalityB: Number.partialOrd,
});
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("foo")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("bar")(3), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(3)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(4), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(4)),
false,
);

assertEquals(
equality.eq(Tuple.make("foo")(NaN), Tuple.make("foo")(NaN)),
false,
);

assertEquals(equality.eq(Tuple.make("foo")(3), Tuple.make("foo")(3)), true);
});
Deno.test("equality", () => {
const equality = Tuple.eq({
equalityA: stringEq,
equalityB: nonNanOrd,
});
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("foo")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("bar")(3), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(3)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(4), Tuple.make("bar")(4)),
false,
);
assertEquals(
equality.eq(Tuple.make("foo")(3), Tuple.make("bar")(4)),
false,
);

assertEquals(equality.eq(Tuple.make("foo")(3), Tuple.make("foo")(3)), true);
});
Deno.test("partial order", () => {
const order = Tuple.partialOrd({
ordA: nonNanOrd,
ordB: Number.partialOrd,
});

assertEquals(
order.partialCmp(
Tuple.make(5)(NaN),
Tuple.make(5)(NaN),
),
Option.none(),
);
assertEquals(
order.partialCmp(
Tuple.make(5)(NaN),
Tuple.make(6)(NaN),
),
Option.none(),
);
assertEquals(
order.partialCmp(
Tuple.make(6)(NaN),
Tuple.make(6)(NaN),
),
Option.none(),
);

assertEquals(
order.partialCmp(
Tuple.make(5)(4),
Tuple.make(5)(4),
),
Option.some(equal as Ordering),
);
assertEquals(
order.partialCmp(
Tuple.make(5)(4),
Tuple.make(5)(5),
),
Option.some(less as Ordering),
);
assertEquals(
order.partialCmp(
Tuple.make(5)(5),
Tuple.make(5)(4),
),
Option.some(greater as Ordering),
);
});
Deno.test("total order", () => {
const order = Tuple.ord({
ordA: stringOrd,
ordB: nonNanOrd,
});

assertEquals(order.cmp(Tuple.make("a")(64), Tuple.make("a")(64)), equal);
assertEquals(order.cmp(Tuple.make("a")(64), Tuple.make("abc")(64)), less);
assertEquals(
order.cmp(Tuple.make("abc")(64), Tuple.make("a")(64)),
greater,
);
assertEquals(order.cmp(Tuple.make("a")(64), Tuple.make("a")(65)), less);
assertEquals(order.cmp(Tuple.make("a")(65), Tuple.make("a")(64)), greater);
});

Deno.test("first", () => {
assertEquals(Tuple.first(Tuple.make(1)("4")), 1);
assertEquals(Tuple.first(Tuple.make("4")(1)), "4");
});
Deno.test("second", () => {
assertEquals(Tuple.second(Tuple.make(1)("4")), "4");
assertEquals(Tuple.second(Tuple.make("4")(1)), 1);
});
Deno.test("assocL", () => {
assertEquals(
Tuple.assocL(Tuple.make(1)(Tuple.make(2)(3))),
Tuple.make(Tuple.make(1)(2))(3),
);
});
Deno.test("assocR", () => {
assertEquals(
Tuple.assocR(Tuple.make(Tuple.make(1)(2))(3)),
Tuple.make(1)(Tuple.make(2)(3)),
);
});
Deno.test("curry", () => {
const product = ([a, b]: Tuple.Tuple<number, number>): number => a * b;
const curried = Tuple.curry(product);
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
assertEquals(curried(x)(y), product([x, y]));
}
}
});
Deno.test("uncurry", () => {
const product = (a: number) => (b: number): number => a * b;
const uncurried = Tuple.uncurry(product);
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
assertEquals(uncurried([x, y]), product(x)(y));
}
}
});
Deno.test("swap", () => {
assertEquals(Tuple.swap(Tuple.make(1)("4")), Tuple.make("4")(1));
});
Deno.test("bind", () => {
assertEquals(
Tuple.bind({
combine: (l: number, r: number) => l + r,
[semiGroupSymbol]: true,
})(Tuple.make(4)(5))((x: number) => Tuple.make(x + 1)("y")),
Tuple.make(10)("y"),
);
});
Deno.test("defer", () => {
const unzipped = Tuple.defer(Lazy.known(Tuple.make(4)(2)));
assertEquals(Lazy.force(unzipped[0]), 4);
assertEquals(Lazy.force(unzipped[1]), 2);
});
Deno.test("foldR", () => {
assertEquals(
Tuple.foldR((x: number) => (y: number) => x ^ y)(1)(Tuple.make(2)(4)),
7,
);
});
Deno.test("bifoldR", () => {
assertEquals(
Tuple.bifoldable.bifoldR((a: number) => (c: string) =>
a.toString() + c
)((b: boolean) => (c: string) => b.toString() + c)("")([5, false]),
"5false",
);
});
Deno.test("bitraverse", () => {
assertEquals(
Tuple.bitraversable.bitraverse(Array.applicative)((
x: string,
) => ["ERROR", x])((x: number) => [x, x + 1])(Tuple.make("")(2)),
[
Tuple.make("ERROR")(2),
Tuple.make("ERROR")(3),
Tuple.make("")(2),
Tuple.make("")(3),
],
);
});

Deno.test("functor laws", () => {
const f = Tuple.functor<number>();
// identity
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(f.map((x: number) => x)(t), t);
}
}

// composition
const mul2 = (x: number) => x * 2;
const add3 = (x: number) => x + 3;
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(
f.map((x: number) => add3(mul2(x)))(t),
f.map(add3)(f.map(mul2)(t)),
);
}
}
});
Deno.test("applicative functor laws", () => {
const app = Tuple.applicative<number>(maxMonoid(-Infinity));
const mul2 = app.pure((x: number) => x * 2);
const add3 = app.pure((x: number) => x + 3);

// identity
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(app.apply(app.pure((i: number) => i))(t), t);
}
}

// composition
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
app.apply(
app.apply(
app.apply(app.pure(
(f: (x: number) => number) =>
(g: (x: number) => number) =>
(i: number) => f(g(i)),
))(add3),
)(mul2),
)(t), app.apply(add3)(app.apply(mul2)(t));
}
}

// homomorphism
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(
app.apply(app.pure(Tuple.swap))(app.pure(t)),
app.pure(Tuple.swap(t)),
);
}
}

// interchange
for (let x = -100; x <= 100; ++x) {
assertEquals(
app.apply(add3)(app.pure(x)),
app.apply(app.pure((i: (x: number) => number) => i(x)))(add3),
);
}
});
Deno.test("monad laws", () => {
const m = Tuple.monad<number>(maxMonoid(-Infinity));

const halfDouble = (
x: number,
): Tuple.Tuple<number, number> => [x / 2, x * 2];
const minusPlus = (
x: number,
): Tuple.Tuple<number, number> => [x - 1, x + 1];

// left identity
for (let x = -100; x <= 100; ++x) {
assertEquals(m.flatMap(halfDouble)(m.pure(x)), halfDouble(x));
}

// right identity
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(m.flatMap(m.pure)(t), t);
}
}

// associativity
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(
m.flatMap(halfDouble)(m.flatMap(minusPlus)(t)),
m.flatMap((x: number) => m.flatMap(halfDouble)(minusPlus(x)))(
t,
),
);
}
}
});
Deno.test("bifunctor laws", () => {
const f = Tuple.bifunctor;

// identity
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(f.biMap(id)(id)(t), t);
}
}

// composition
const succ = (x: number) => x + 1;
const invert = (x: number) => ~x;
const mul4 = (x: number) => x * 4;
const square = (x: number) => x ** 2;
for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
assertEquals(
f.biMap(compose(succ)(invert))(compose(mul4)(square))(t),
compose(f.biMap(succ)(mul4))(f.biMap(invert)(square))(t),
);
}
}
});
Deno.test("comonad laws", () => {
const c = Tuple.comonad<number>();

for (let x = -100; x <= 100; ++x) {
for (let y = -100; y <= 100; ++y) {
const t = Tuple.make(x)(y);
// duplicate then extract
assertEquals(c.extract(c.duplicate(t)), t);

// extract as identity of map
assertEquals(c.map(c.extract)(c.duplicate(t)), t);

// duplicate as identity of map
assertEquals(
c.duplicate(c.duplicate(t)),
c.map(c.duplicate)(c.duplicate(t)),
);
}
}
});

Deno.test("encode then decode", () => {
const data = Tuple.make(1024)("wow");
const serial = runCode(Tuple.enc(encU32Be)(encUtf8)(data));
assertEquals(
unwrap(runDecoder(Tuple.dec(decU32Be())(decUtf8()))(serial)),
data,
);
});
Loading