import { Test, TestingModule } from "@nestjs/testing";
import { IntroService } from "@/intro/intro.service";
import introDataset from "@/intro/intro.dataset";

describe("IntroService", () => {
    let service: IntroService;

    beforeEach(async () => {
        const module: TestingModule = await Test.createTestingModule({
            providers: [IntroService],
        }).compile();

        jest.spyOn(introDataset, "getData").mockImplementation(() => [
            {
                category: "Personal details",
                name: "Name",
                value: "Bob ross",
            },
            {
                category: "Personal details",
                name: "Gender",
                value: "Male",
            },
            {
                category: "Personal details",
                name: "Address",
                value: "",
            },
            {
                category: "Personal details",
                name: "Phone number",
                value: "+31 6 00 00 00 00",
            },
            {
                category: "Personal details",
                name: "Date of birth",
                value: "1942-10-29",
            },
            {
                category: "Hobbies",
                name: "Painting",
                value: "",
            },
        ]);

        service = module.get<IntroService>(IntroService);
    });

    it("should be defined", () => {
        expect(service).toBeDefined();
    });

    describe("getMany method", () => {
        it("should be defined", () => {
            expect(service.getMany).toBeDefined();
        });

        it("should return an array with 6 entries", () => {
            const intro = service.getMany();

            expect(Array.isArray(intro)).toBe(true);
            expect(intro.length).toBe(6);
        });

        it("should return a filtered array with 5 entries", () => {
            const intro = service.getMany({
                category: "Personal details",
            });

            expect(Array.isArray(intro)).toBe(true);
            expect(intro.length).toBe(5);
        });
    });
});