import { describe, expect, test } from "bun:test";
import twuiSlugify from "./slugify";

describe("twuiSlugify", () => {
    test("returns empty string for undefined input", () => {
        expect(twuiSlugify(undefined)).toBe("");
    });

    test("returns empty string for empty string input", () => {
        expect(twuiSlugify("")).toBe("");
    });

    test("slugifies simple text", () => {
        expect(twuiSlugify("Hello World")).toBe("hello-world");
    });

    test("removes special characters", () => {
        expect(twuiSlugify("Yes!")).toBe("yes");
    });

    test("removes multiple special characters", () => {
        expect(twuiSlugify("Hello!!! World!")).toBe("hello-world");
    });

    test("converts to lowercase", () => {
        expect(twuiSlugify("UPPERCASE TEXT")).toBe("uppercase-text");
    });

    test("replaces multiple spaces with single divider", () => {
        expect(twuiSlugify("Hello   World")).toBe("hello-world");
    });

    test("removes leading dash by default", () => {
        expect(twuiSlugify(" hello")).toBe("hello");
    });

    test("removes trailing dash by default", () => {
        expect(twuiSlugify("hello ")).toBe("hello");
    });

    test("keeps trailing dash when allowTrailingDash is true", () => {
        expect(twuiSlugify("hello-", "-", true)).toBe("hello-");
    });

    test("uses underscore divider when specified", () => {
        expect(twuiSlugify("Hello World", "_")).toBe("hello_world");
    });

    test("handles numbers", () => {
        expect(twuiSlugify("Item 123")).toBe("item-123");
    });

    test("handles mixed alphanumeric and special chars", () => {
        expect(twuiSlugify("Hello @World #2024!")).toBe("hello-world-2024");
    });

    test("replaces consecutive dashes with single dash", () => {
        expect(twuiSlugify("a---b")).toBe("a-b");
    });

    test("trims whitespace before processing", () => {
        expect(twuiSlugify("  hello world  ")).toBe("hello-world");
    });

    test("handles single character input", () => {
        expect(twuiSlugify("a")).toBe("a");
    });

    test("handles number-only input", () => {
        expect(twuiSlugify("123")).toBe("123");
    });
});