import { upperCaseValues } from "../../src/utils";

describe("upperCaseValues", () => {
    it("should return undefined if the input object is undefined or null", () => {
        expect(upperCaseValues(undefined)).toBeUndefined();
        expect(upperCaseValues(null)).toBeUndefined();
    });

    it("should return an object with all its string values converted to upper case", () => {
        const input = {
            key1: "value1",
            key2: "value2",
            key3: "value3",
        };

        const expectedOutput = {
            key1: "VALUE1",
            key2: "VALUE2",
            key3: "VALUE3",
        };

        expect(upperCaseValues(input)).toEqual(expectedOutput);
    });
});