From 1a6e4ad5e8c13110e362338731b3583b8c305162 Mon Sep 17 00:00:00 2001
From: Dariusz Rybicki <dariusz@elixxir.io>
Date: Tue, 8 Nov 2022 23:28:23 +0100
Subject: [PATCH] Add Stored.userDefaults implementation
---
Sources/XXMessengerClient/Utils/Stored.swift | 21 ++++++++++++
.../Utils/StoredTests.swift | 34 ++++++++++++++++++-
2 files changed, 54 insertions(+), 1 deletion(-)
diff --git a/Sources/XXMessengerClient/Utils/Stored.swift b/Sources/XXMessengerClient/Utils/Stored.swift
index 052d6387..ab0de7e1 100644
--- a/Sources/XXMessengerClient/Utils/Stored.swift
+++ b/Sources/XXMessengerClient/Utils/Stored.swift
@@ -1,3 +1,4 @@
+import Foundation
import XCTestDynamicOverlay
public struct Stored<Value> {
@@ -31,6 +32,26 @@ private final class Memory<Value> {
var value: Value
}
+extension Stored {
+ public static func userDefaults<T>(
+ key: String,
+ userDefaults: UserDefaults = .standard
+ ) -> Stored<T?> where T: Codable {
+ let encoder = JSONEncoder()
+ let decoder = JSONDecoder()
+ return Stored<T?>(
+ get: {
+ guard let data = userDefaults.data(forKey: key) else { return nil }
+ return try? decoder.decode(T.self, from: data)
+ },
+ set: { newValue in
+ let data = try? encoder.encode(newValue)
+ userDefaults.set(data, forKey: key)
+ }
+ )
+ }
+}
+
extension Stored {
public struct MissingValueError: Error, Equatable {
public init(typeDescription: String) {
diff --git a/Tests/XXMessengerClientTests/Utils/StoredTests.swift b/Tests/XXMessengerClientTests/Utils/StoredTests.swift
index 154f6196..834097ef 100644
--- a/Tests/XXMessengerClientTests/Utils/StoredTests.swift
+++ b/Tests/XXMessengerClientTests/Utils/StoredTests.swift
@@ -1,8 +1,9 @@
+import CustomDump
import XCTest
@testable import XXMessengerClient
final class StoredTests: XCTestCase {
- func testInMemory() throws {
+ func testInMemory() {
let stored: Stored<String?> = .inMemory()
XCTAssertNil(stored())
@@ -15,4 +16,35 @@ final class StoredTests: XCTestCase {
XCTAssertNil(stored())
}
+
+ func testUserDefaults() {
+ struct Value: Equatable, Codable {
+ var id = UUID()
+ }
+
+ let key = "key"
+ let userDefaults = UserDefaults(suiteName: "XXMessengerClient_StoredTests")!
+ userDefaults.removeObject(forKey: key)
+ let stored: Stored<Value?> = .userDefaults(
+ key: key,
+ userDefaults: userDefaults
+ )
+
+ XCTAssertNoDifference(stored.get(), nil)
+
+ let value = Value()
+ stored.set(value)
+
+ XCTAssertNoDifference(
+ userDefaults.data(forKey: key).map { data in
+ try? JSONDecoder().decode(Value.self, from: data)
+ },
+ value
+ )
+ XCTAssertNoDifference(stored.get(), value)
+
+ userDefaults.set(nil, forKey: key)
+
+ XCTAssertNoDifference(stored.get(), nil)
+ }
}
--
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