2024-07-30-4.swift

2024-07-30-4.swift

final class ContextTests : XCTestCase {
  func testDelete() throws {
    let schema = Schema([Item.self])
    let configuration = ModelConfiguration(isStoredInMemoryOnly: true)
    let container = try ModelContainer(
      for: schema,
      configurations: configuration
    )
    let modelContext = ModelContext(container)
    modelContext.insert(Item())
    XCTAssert(try modelContext.fetchCount(FetchDescriptor<Item>()) == 1)
    try modelContext.delete(model: Item.self)
    XCTAssert(try modelContext.fetchCount(FetchDescriptor<Item>()) == 0)
  }
  
  func testDeleteWithIteration() throws {
    let schema = Schema([Item.self])
    let configuration = ModelConfiguration(isStoredInMemoryOnly: true)
    let container = try ModelContainer(
      for: schema,
      configurations: configuration
    )
    let modelContext = ModelContext(container)
    modelContext.insert(Item())
    XCTAssert(try modelContext.fetchCount(FetchDescriptor<Item>()) == 1)
    try modelContext.delete(model: Item.self)
    for model in try modelContext.fetch(FetchDescriptor<Item>()) {
      modelContext.delete(model)
    }
    XCTAssert(try modelContext.fetchCount(FetchDescriptor<Item>()) == 0)
  }
}