add local time tests

CriticalMapsKit/Sources/Helpers/Timezone+Extras.swift

@@ -7,6 +7,7 @@ public extension TimeZone {
   static let spain = TimeZone(identifier: "Europe/Madrid")!
   static let france = TimeZone(identifier: "Europe/Paris")!
   static let greece = TimeZone(identifier: "Europe/Athens")!
+  static let london = TimeZone(identifier: "Europe/London")!
 
   // America
   static let ecuador = TimeZone(identifier: "America/Guayaquil")!

CriticalMapsKit/Sources/SharedModels/NextRideFeature/Ride.swift

@@ -64,7 +64,18 @@ extension Ride {
     let id: Int
     let name: String
     let timezone: String
+
+    public init(
+      id: Int,
+      name: String,
+      timezone: String
+    ) {
+      self.id = id
+      self.name = name
+      self.timezone = timezone
+    }
   }
+
 }
 
 public extension Ride {
@@ -159,3 +170,38 @@ private extension Date.FormatStyle {
     )
   }
 }
+
+enum Helper {
+  static func displayEventDateTimeForUser(
+    eventDateTime: TimeInterval,
+    eventTimeZoneID: String,
+    userTimeZoneID: String
+  ) -> String? {
+
+      // Create Date object from event's Unix timestamp
+      let eventDate = Date(timeIntervalSince1970: eventDateTime)
+
+      // Get event's timezone
+      guard let eventTimeZone = TimeZone(identifier: eventTimeZoneID) else {
+          print("Invalid event timezone")
+          return nil
+      }
+
+      // Get user's timezone (e.g., London timezone)
+      guard let userTimeZone = TimeZone(identifier: userTimeZoneID) else {
+          print("Invalid user timezone")
+          return nil
+      }
+
+      // Formatter to display time in local timezone
+      let dateFormatter = DateFormatter()
+      dateFormatter.dateStyle = .full
+      dateFormatter.timeStyle = .short
+
+      // Convert event time to user's local timezone
+      dateFormatter.timeZone = userTimeZone
+      let formattedDateForUser = dateFormatter.string(from: eventDate)
+
+      return formattedDateForUser
+  }
+}

CriticalMapsKit/Tests/NextRideFeatureTests/RideTimeTests.swift

@@ -0,0 +1,63 @@
+import ComposableArchitecture
+import Helpers
+import SharedModels
+import Foundation
+import Testing
+
+struct RideTimeTests {
+  @Test("Ride in new york timezone")
+  func rideWithNewYorkTimezone() {
+    withDependencies {
+      $0.locale = Locale(identifier: "en_US")
+    } operation: {
+      let ride = Ride.mock(timeZone: .newYork, timestamp: 1727478000)
+      let rideTime = ride.rideTime
+      #expect(rideTime == "7:00 PM")
+    }
+  }
+
+  @Test("Ride in berlin timezone")
+  func rideWithBerlinTimezone() {
+    withDependencies {
+      $0.locale = Locale(identifier: "de_DE")
+    } operation: {
+      let ride = Ride.mock(timeZone: .germany, timestamp: 1725192000)
+      let rideTime = ride.rideTime
+      #expect(rideTime == "14:00")
+    }
+  }
+
+  @Test("Ride in GMT timezone")
+  func rideWithGMTTimezone() {
+    withDependencies {
+      $0.locale = Locale(identifier: "pt_PT")
+    } operation: {
+      let ride = Ride.mock(timeZone: .gmt, timestamp: 1727452800)
+      let rideTime = ride.rideTime
+      #expect(rideTime == "16:00")
+    }
+  }
+}
+
+private extension Ride {
+  static func mock(timeZone: TimeZone, timestamp: TimeInterval) -> Self {
+    Self(
+      id: 0,
+      city: Ride.City(id: 1, name: "Berlin", timezone: timeZone.identifier),
+      slug: nil,
+      title: "CriticalMaps Berlin",
+      description: nil,
+      dateTime: Date(timeIntervalSince1970: timestamp),
+      location: nil,
+      latitude: 53.1235,
+      longitude: 13.4234,
+      estimatedParticipants: nil,
+      estimatedDistance: nil,
+      estimatedDuration: nil,
+      enabled: true,
+      disabledReason: nil,
+      disabledReasonMessage: nil,
+      rideType: .criticalMass
+    )
+  }
+}