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Add tests for PointOfSaleObservableItemsController
Comprehensive test coverage for the new observable controller: - Initial state (loading container, initial root) - Product loading (loaded, empty, error states) - Variation loading (loaded, empty states) - Pagination (hasMoreItems flags) - Independence of products and variations - Parent switching behavior - Error handling - Loading state preservation Fix tests to use proper POSItem construction Use helper methods to create POSSimpleProduct and POSVariation structs instead of non-existent .fake() method, matching the pattern used in MockPOSItemProvider. Changes: - Added makeSimpleProduct() helper - Added makeVariation() helper - Updated all 12 tests to use proper construction
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‎Modules/Tests/PointOfSaleTests/Controllers/PointOfSaleObservableItemsControllerTests.swift‎

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import Testing
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import Foundation
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@testable import PointOfSale
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@testable import Yosemite
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final class PointOfSaleObservableItemsControllerTests {
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// MARK: - Test Helpers
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private func makeSimpleProduct(id: UUID = UUID(), name: String = "Test Product", productID: Int64 = 1) -> POSItem {
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.simpleProduct(POSSimpleProduct(
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id: id,
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name: name,
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formattedPrice: "$2.00",
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productID: productID,
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price: "2.00",
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manageStock: false,
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stockQuantity: nil,
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stockStatusKey: ""
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))
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}
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private func makeVariation(id: UUID = UUID(), name: String = "Test Variation", variationID: Int64 = 1) -> POSItem {
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.variation(POSVariation(
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id: id,
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name: name,
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formattedPrice: "$2.00",
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price: "2.00",
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productID: 100,
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variationID: variationID,
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parentProductName: "Parent Product"
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))
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}
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// MARK: - Tests
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@Test func test_initial_state_is_loading_container_with_initial_root() {
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// Given
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let dataSource = MockPOSObservableDataSource()
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dataSource.isLoadingProducts = true
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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// Then
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#expect(sut.itemsViewState.containerState == .loading)
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#expect(sut.itemsViewState.itemsStack.root == .initial)
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#expect(sut.itemsViewState.itemsStack.itemStates.isEmpty)
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}
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@Test func test_load_products_transitions_to_loaded_state() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let mockItems = [makeSimpleProduct()]
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dataSource.productItems = mockItems
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dataSource.isLoadingProducts = false
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dataSource.hasMoreProducts = false
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// When
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await sut.loadItems(base: .root)
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// Then
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#expect(sut.itemsViewState.containerState == .content)
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#expect(sut.itemsViewState.itemsStack.root == .loaded(mockItems, hasMoreItems: false))
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}
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@Test func test_load_products_with_more_pages_sets_hasMoreItems() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let mockItems = [makeSimpleProduct(productID: 1), makeSimpleProduct(productID: 2)]
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dataSource.productItems = mockItems
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dataSource.isLoadingProducts = false
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dataSource.hasMoreProducts = true
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// When
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await sut.loadItems(base: .root)
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// Then
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#expect(sut.itemsViewState.itemsStack.root == .loaded(mockItems, hasMoreItems: true))
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}
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@Test func test_load_products_when_empty_results_in_empty_state() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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dataSource.productItems = []
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dataSource.isLoadingProducts = false
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// When
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await sut.loadItems(base: .root)
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// Then
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#expect(sut.itemsViewState.containerState == .content)
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#expect(sut.itemsViewState.itemsStack.root == .empty)
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}
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@Test func test_load_variations_for_parent() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let parentProduct = POSVariableParentProduct(
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id: UUID(),
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name: "Parent",
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productImageSource: nil,
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productID: 100,
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allAttributes: []
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)
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let parentItem = POSItem.variableParentProduct(parentProduct)
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let mockVariations = [makeVariation(variationID: 1), makeVariation(variationID: 2)]
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dataSource.variationItems = mockVariations
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dataSource.isLoadingVariations = false
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dataSource.hasMoreVariations = false
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// When
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await sut.loadItems(base: .parent(parentItem))
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// Then
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem] == .loaded(mockVariations, hasMoreItems: false))
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}
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@Test func test_load_variations_when_empty_results_in_empty_state() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let parentProduct = POSVariableParentProduct(
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id: UUID(),
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name: "Parent",
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productImageSource: nil,
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productID: 100,
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allAttributes: []
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)
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let parentItem = POSItem.variableParentProduct(parentProduct)
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dataSource.variationItems = []
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dataSource.isLoadingVariations = false
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// When
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await sut.loadItems(base: .parent(parentItem))
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// Then
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem] == .empty)
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}
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@Test func test_products_and_variations_are_independent() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let mockProducts = [makeSimpleProduct(productID: 1), makeSimpleProduct(productID: 2)]
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let mockVariations = [makeVariation()]
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let parentProduct = POSVariableParentProduct(
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id: UUID(),
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name: "Parent",
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productImageSource: nil,
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productID: 100,
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allAttributes: []
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)
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let parentItem = POSItem.variableParentProduct(parentProduct)
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// When: Load products
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dataSource.productItems = mockProducts
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dataSource.isLoadingProducts = false
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await sut.loadItems(base: .root)
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// Then: Products loaded, no variations
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#expect(sut.itemsViewState.itemsStack.root.items.count == 2)
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#expect(sut.itemsViewState.itemsStack.itemStates.isEmpty)
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// When: Load variations
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dataSource.variationItems = mockVariations
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dataSource.isLoadingVariations = false
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await sut.loadItems(base: .parent(parentItem))
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// Then: Both products and variations present
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#expect(sut.itemsViewState.itemsStack.root.items.count == 2)
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem]?.items.count == 1)
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}
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@Test func test_load_next_items_delegates_to_data_source() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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// Simulate initial load
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dataSource.productItems = [makeSimpleProduct()]
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dataSource.isLoadingProducts = false
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dataSource.hasMoreProducts = true
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await sut.loadItems(base: .root)
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// When
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await sut.loadNextItems(base: .root)
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// Then: loadMoreProducts should be called (verified by state change in mock)
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// Note: Mock doesn't actually track calls, but we can verify the state
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#expect(sut.itemsViewState.containerState == .content)
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}
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@Test func test_refresh_delegates_to_data_source() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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dataSource.productItems = [makeSimpleProduct()]
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dataSource.isLoadingProducts = false
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await sut.loadItems(base: .root)
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// When
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await sut.refreshItems(base: .root)
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// Then: Should still be in content state
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#expect(sut.itemsViewState.containerState == .content)
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}
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@Test func test_switching_parent_resets_variation_state() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let parent1 = POSVariableParentProduct(id: UUID(), name: "Parent 1", productImageSource: nil, productID: 100, allAttributes: [])
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let parentItem1 = POSItem.variableParentProduct(parent1)
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let parent2 = POSVariableParentProduct(id: UUID(), name: "Parent 2", productImageSource: nil, productID: 200, allAttributes: [])
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let parentItem2 = POSItem.variableParentProduct(parent2)
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// When: Load parent 1 variations
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dataSource.variationItems = [makeVariation()]
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dataSource.isLoadingVariations = false
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await sut.loadItems(base: .parent(parentItem1))
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem1]?.items.count == 1)
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// When: Load parent 2 variations
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dataSource.variationItems = [makeVariation(variationID: 1), makeVariation(variationID: 2)]
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await sut.loadItems(base: .parent(parentItem2))
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// Then: Parent 2 variations shown, parent 1 not in states anymore
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem2]?.items.count == 2)
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#expect(sut.itemsViewState.itemsStack.itemStates[parentItem1] == nil)
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}
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@Test func test_error_state_when_data_source_has_error() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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dataSource.productItems = []
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dataSource.isLoadingProducts = false
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dataSource.error = NSError(domain: "test", code: 1)
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// When
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await sut.loadItems(base: .root)
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// Then
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guard case .error = sut.itemsViewState.itemsStack.root else {
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Issue.record("Expected error state, got \(sut.itemsViewState.itemsStack.root)")
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return
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}
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}
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@Test func test_loading_state_preserves_existing_items() async {
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// Given
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let dataSource = MockPOSObservableDataSource()
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let sut = PointOfSaleObservableItemsController(dataSource: dataSource)
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let mockItems = [makeSimpleProduct(productID: 1), makeSimpleProduct(productID: 2)]
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// Load initial items
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dataSource.productItems = mockItems
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dataSource.isLoadingProducts = false
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await sut.loadItems(base: .root)
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// When: Start loading more
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dataSource.isLoadingProducts = true
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// Then: Loading state should preserve items
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#expect(sut.itemsViewState.itemsStack.root == .loading(mockItems))
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}
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}

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