import { Test, TestingModule } from "@nestjs/testing";
import { ExperiencesService } from "./experiences.service";
import { SkillsService } from "@/skills/skills.service";
import experiencesDataset from "@/experiences/experiences.dataset";
import skillsDataset from "@/skills/skills.dataset";

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

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

        jest.spyOn(experiencesDataset, "getData").mockImplementation(() => [
            {
                name: "Employer A",
                city: "City A",
                url: "https://example.com/",
                jobTitle: "Tester",
                startDate: new Date(2023, 0),
                endDate: new Date(2023, 1),
                description: `Description of work`,
                skills: [
                    {
                        category: "Testing",
                    },
                ],
            },
            {
                name: "Employer B",
                city: "City B",
                url: "https://example.com/",
                jobTitle: "Developer",
                startDate: new Date(2023, 1),
                endDate: new Date(2023, 2),
                description: `Description of work`,
                skills: [
                    {
                        category: "Programming",
                    },
                ],
            },
        ]);

        jest.spyOn(skillsDataset, "getData").mockImplementation(() => [
            {
                name: "Writing tests",
                description: "Writing tests",
                category: "Testing",
            },
            {
                name: "TDD",
                description: "Test Driven Development",
                category: "Testing",
            },
            {
                name: "OOP",
                description: "Object Orientated Programming",
                category: "Programming style",
            },
        ]);

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

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

    describe("getMany method", () => {
        it("should be defined", () => {
            expect(service.getMany).toBeDefined();
        });
        it("should return an array", () => {
            expect(Array.isArray(service.getMany())).toBe(true);
        });

        it("should return 2 entries", () => {
            expect(service.getMany().length).toBe(2);
        });

        it("should return 1 entries with 2 skills", () => {
            const experiences = service.getMany({ jobTitle: "Tester" });
            expect(experiences.length).toBe(1);
            expect(experiences[0].skills.length).toBe(2);
        });
    });
});