TravBot-v3/src/lib.test.ts

import {strict as assert} from "assert";
import {pluralise, pluraliseSigned, replaceAll, toTitleCase, split, parseVars} from "./lib";

// I can't figure out a way to run the test suite while running the bot.
describe("Wrappers", () => {
    describe("NumberWrapper", () => {
        describe("#pluralise()", () => {
            it('should return "5 credits"', () => {
                assert.strictEqual(pluralise(5, "credit", "s"), "5 credits");
            });

            it('should return "1 credit"', () => {
                assert.strictEqual(pluralise(1, "credit", "s"), "1 credit");
            });

            it('should return "-1 credits"', () => {
                assert.strictEqual(pluralise(-1, "credit", "s"), "-1 credits");
            });

            it("should be able to work with a plural suffix", () => {
                assert.strictEqual(pluralise(2, "part", "ies", "y"), "2 parties");
            });

            it("should be able to work with a singular suffix", () => {
                assert.strictEqual(pluralise(1, "part", "ies", "y"), "1 party");
            });

            it("should be able to exclude the number", () => {
                assert.strictEqual(pluralise(1, "credit", "s", "", true), "credit");
            });
        });

        describe("#pluraliseSigned()", () => {
            it('should return "-1 credits"', () => {
                assert.strictEqual(pluraliseSigned(-1, "credit", "s"), "-1 credits");
            });

            it('should return "+0 credits"', () => {
                assert.strictEqual(pluraliseSigned(0, "credit", "s"), "+0 credits");
            });

            it('should return "+1 credit"', () => {
                assert.strictEqual(pluraliseSigned(1, "credit", "s"), "+1 credit");
            });
        });
    });

    describe("StringWrapper", () => {
        describe("#replaceAll()", () => {
            it('should convert "test" to "zesz"', () => {
                assert.strictEqual(replaceAll("test", "t", "z"), "zesz");
            });
        });

        describe("#parseVars()", () => {
            it('should replace %test% with "yeet"', () => {
                assert.strictEqual(parseVars("ya %test%", {test: "yeet"}), "ya yeet");
            });
        });

        describe("#toTitleCase()", () => {
            it("should capitalize the first letter of each word", () => {
                assert.strictEqual(
                    toTitleCase("yeetus deletus find salvation from jesus"),
                    "Yeetus Deletus Find Salvation From Jesus"
                );
            });
        });
    });

    describe("ArrayWrapper", () => {
        describe("#split()", () => {
            it("should split [1,2,3,4,5,6,7,8,9,10] into [[1,2,3],[4,5,6],[7,8,9],[10]]", () => {
                assert.deepStrictEqual(split([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 3), [
                    [1, 2, 3],
                    [4, 5, 6],
                    [7, 8, 9],
                    [10]
                ]);
            });
        });
    });
});