import abs from "../src/abs";

describe("abs function", () => {

test("should return absolute value of positive number", () => {

expect(abs("123.456")).toBe("123.456");

});

test("should return absolute value of negative number", () => {

expect(abs("-123.456")).toBe("123.456");

});

test("should handle positive sign", () => {

expect(abs("+123.456")).toBe("123.456");

});

test("should handle zero", () => {

expect(abs("0")).toBe("0");

expect(abs("-0")).toBe("0");

expect(abs("+0")).toBe("0");

});

test("should handle very large numbers", () => {

expect(abs("-999999999999999999999999.123456789")).toBe("999999999999999999999999.123456789");

});

test("should handle whitespace", () => {

expect(abs(" -123.456 ")).toBe("123.456");

});

test("should throw error for non-string input", () => {

expect(() => abs(123 as any)).toThrow("Input must be a string");

});

});