101 lines
3.1 KiB
Swift
101 lines
3.1 KiB
Swift
//
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// PreferenceStoreTests.swift
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// TuskerPreferencesTests
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//
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// Created by Shadowfacts on 4/12/24.
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//
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import XCTest
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@testable import TuskerPreferences
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import Combine
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final class PreferenceStoreTests: XCTestCase {
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struct TestKey: PreferenceKey {
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static let defaultValue = false
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}
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final class TestStore: Codable, ObservableObject {
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private var _test = Preference<TestKey>()
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// the acutal subscript expects the enclosingInstance to be a PreferenceStore, so do it manually
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var test: Bool {
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get {
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Preference.get(enclosingInstance: self, storage: \._test)
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}
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set {
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Preference.set(enclosingInstance: self, storage: \._test, newValue: newValue)
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}
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}
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var testPublisher: some Publisher<TestKey.Value, Never> {
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_test.projectedValue
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}
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init() {
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}
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init(from decoder: any Decoder) throws {
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let container = try decoder.container(keyedBy: CodingKeys.self)
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self._test = try container.decode(Preference<TestKey>.self, forKey: .test)
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}
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enum CodingKeys: CodingKey {
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case test
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}
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func encode(to encoder: any Encoder) throws {
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var container = encoder.container(keyedBy: CodingKeys.self)
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try container.encode(self._test, forKey: .test)
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}
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}
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func testDecoding() throws {
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let decoder = JSONDecoder()
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let present = try decoder.decode(PreferenceCoding<TestStore>.self, from: Data("""
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{"test": true}
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""".utf8)).wrapped
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XCTAssertEqual(present.test, true)
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let absent = try decoder.decode(PreferenceCoding<TestStore>.self, from: Data("""
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{}
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""".utf8)).wrapped
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XCTAssertEqual(absent.test, false)
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}
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func testEncoding() throws {
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let store = TestStore()
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let encoder = JSONEncoder()
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XCTAssertEqual(String(data: try encoder.encode(PreferenceCoding(wrapped: store)), encoding: .utf8)!, """
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{}
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""")
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store.test = true
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XCTAssertEqual(String(data: try encoder.encode(PreferenceCoding(wrapped: store)), encoding: .utf8)!, """
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{"test":true}
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""")
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store.test = false
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XCTAssertEqual(String(data: try encoder.encode(PreferenceCoding(wrapped: store)), encoding: .utf8)!, """
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{"test":false}
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""")
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}
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func testPublisher() {
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let topLevel = expectation(description: "top level publisher")
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let specificPref = expectation(description: "preference publisher")
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// initial and on change
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specificPref.expectedFulfillmentCount = 2
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let store = TestStore()
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var cancellables = Set<AnyCancellable>()
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store.objectWillChange.sink {
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topLevel.fulfill()
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// fires on will change
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XCTAssertEqual(store.test, false)
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}.store(in: &cancellables)
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store.testPublisher.sink { _ in
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specificPref.fulfill()
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}.store(in: &cancellables)
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store.test = true
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wait(for: [topLevel, specificPref])
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}
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}
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