import { describe, expect, test } from "bun:test";
import twuiNormalizeText from "./normalize-text";

describe("twuiNormalizeText", () => {
    test("collapses multiple spaces", () => {
        expect(twuiNormalizeText("hello   world")).toBe("hello world");
    });

    test("replaces newlines with spaces", () => {
        expect(twuiNormalizeText("hello\nworld")).toBe("hello world");
    });

    test("replaces carriage returns with spaces", () => {
        expect(twuiNormalizeText("hello\rworld")).toBe("hello world");
    });

    test("replaces CRLF with spaces", () => {
        expect(twuiNormalizeText("hello\r\nworld")).toBe("hello world");
    });

    test("trims leading and trailing whitespace", () => {
        expect(twuiNormalizeText("  hello world  ")).toBe("hello world");
    });

    test("handles mixed whitespace", () => {
        expect(twuiNormalizeText("  hello\n\n  world  \r\n  ")).toBe("hello world");
    });

    test("handles empty string", () => {
        expect(twuiNormalizeText("")).toBe("");
    });

    test("handles string with only whitespace", () => {
        expect(twuiNormalizeText("   ")).toBe("");
    });

    test("preserves single spaces", () => {
        expect(twuiNormalizeText("hello world")).toBe("hello world");
    });

    test("handles tabs as regular characters (not collapsed by default)", () => {
        const result = twuiNormalizeText("hello\tworld");
        expect(result).toContain("hello");
        expect(result).toContain("world");
    });

    test("handles multiple consecutive newlines", () => {
        expect(twuiNormalizeText("hello\n\n\nworld")).toBe("hello world");
    });
});