31 lines
894 B
TypeScript
31 lines
894 B
TypeScript
import { assertEquals } from "https://deno.land/std/testing/asserts.ts";
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import { identity, nop, partial, pipe } from "./composition.ts";
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Deno.test("nop", () => {
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assertEquals(nop(), undefined);
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});
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Deno.test("identity", () => {
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assertEquals(identity(5), 5);
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assertEquals(identity(null), null);
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});
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Deno.test("partial", () => {
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const func1 = (conf: { a: number; b: string; c: number }) =>
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`${conf.a}${conf.b}${conf.c}`;
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const pfunc1 = partial({ b: "test" }, func1);
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assertEquals(pfunc1({ a: 5, c: 8 }), "5test8");
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const func2 = (conf: { a: number; b: string }, c: number) =>
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`${conf.a}${conf.b}${c}`;
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const pfunc2 = partial({ b: "test" }, func2);
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assertEquals(pfunc2({ a: 2 }, 3), "2test3");
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});
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Deno.test("pipe", () => {
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const f = pipe((x: number) => x * 2, (x: number) => x + 1);
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assertEquals(f(1), 3);
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assertEquals(f(2), 5);
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assertEquals(f(3), 7);
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});
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