66 lines
1.9 KiB
Swift
66 lines
1.9 KiB
Swift
// Copyright 2021 Tokamak contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Created by Carson Katri on 6/29/22.
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//
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import XCTest
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@_spi(TokamakCore) @testable import TokamakCore
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import TokamakTestRenderer
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private enum TestKey: PreferenceKey {
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static let defaultValue: Int = 0
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static func reduce(value: inout Int, nextValue: () -> Int) {
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value += nextValue()
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}
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}
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final class PreferenceTests: XCTestCase {
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func testPreferenceAction() {
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struct TestView: View {
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public var body: some View {
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Text("")
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.preference(key: TestKey.self, value: 2)
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.preference(key: TestKey.self, value: 3)
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.onPreferenceChange(TestKey.self) {
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XCTAssertEqual($0, 5)
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}
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}
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}
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let reconciler = TestFiberRenderer(.root, size: .init(width: 500, height: 500))
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.render(TestView())
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reconciler.fiberChanged(reconciler.current)
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}
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func testOverlay() {
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struct TestView: View {
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var body: some View {
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Text("")
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.preference(key: TestKey.self, value: 2)
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.preference(key: TestKey.self, value: 3)
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.overlayPreferenceValue(TestKey.self) {
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Text("\($0)")
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.identified(by: "overlay")
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}
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}
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}
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let reconciler = TestFiberRenderer(.root, size: .init(width: 500, height: 500))
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.render(TestView())
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XCTAssertEqual(reconciler.findView(id: "overlay").view, Text("5"))
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}
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}
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