import XCTest
@testable import iosApp
import ComposeApp

@MainActor
final class ResidenceViewModelTests: XCTestCase {
    var sut: ResidenceViewModel!

    override func setUp() {
        super.setUp()
        sut = ResidenceViewModel()
    }

    override func tearDown() {
        sut = nil
        super.tearDown()
    }

    // MARK: - Initialization Tests

    func testInitialState() {
        // Then
        XCTAssertFalse(sut.isLoading)
        XCTAssertNil(sut.errorMessage)
        XCTAssertNil(sut.myResidences)
    }

    // MARK: - Loading Tests

    func testLoadMyResidencesStartsLoading() {
        // Given
        let initialLoadingState = sut.isLoading

        // When
        sut.loadMyResidences()

        // Then - Loading should start or complete quickly
        XCTAssertTrue(sut.isLoading || sut.errorMessage != nil || sut.myResidences != nil)
    }

    // MARK: - Error Handling Tests

    func testErrorMessageIsSetOnFailure() {
        // This test would require mocking the API
        // For now, we test that error handling mechanism exists
        XCTAssertNil(sut.errorMessage)
    }

    // MARK: - State Management Tests

    func testMultipleLoadCallsDontCrash() {
        // When
        sut.loadMyResidences()
        sut.loadMyResidences()
        sut.loadMyResidences()

        // Then - Should not crash
        XCTAssertNotNil(sut)
    }
}