field_ios

In-the-field app for Radroots on iOS
git clone https://radroots.dev/git/field_ios.git
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TeraClockTests.swift (1898B)

      1 import Foundation
      2 @testable import TeraApp
      3 import XCTest
      4 
      5 final class TeraClockTests: XCTestCase {
      6   func testUnixClockUsesCheckedFlooringAtBothPrecisions() throws {
      7     let clock = TeraClock(now: { Date(timeIntervalSince1970: 1_800_000_000.125) })
      8 
      9     XCTAssertEqual(try clock.unixSeconds(), 1_800_000_000)
     10     XCTAssertEqual(try clock.unixMilliseconds(), 1_800_000_000_125)
     11     XCTAssertEqual(try TeraClock.fixed(unixSeconds: 1).unixSeconds(requirePositive: true), 1)
     12   }
     13 
     14   func testUnixClockRejectsNonfinitePreEpochZeroAndOverflow() {
     15     let vectors: [(TimeInterval, TeraClockError)] = [
     16       (.nan, .nonfinite),
     17       (.infinity, .nonfinite),
     18       (-0.001, .beforeUnixEpoch),
     19       (TimeInterval.greatestFiniteMagnitude, .overflow),
     20     ]
     21     for (value, expected) in vectors {
     22       XCTAssertThrowsError(
     23         try TeraClock.unixMilliseconds(from: Date(timeIntervalSince1970: value))
     24       ) { error in
     25         XCTAssertEqual(error as? TeraClockError, expected)
     26       }
     27     }
     28     XCTAssertThrowsError(
     29       try TeraClock.unixSeconds(
     30         from: Date(timeIntervalSince1970: 0),
     31         requirePositive: true
     32       )
     33     ) { error in
     34       XCTAssertEqual(error as? TeraClockError, .zeroNotAllowed)
     35     }
     36     XCTAssertThrowsError(
     37       try TeraClock.signedUnixMilliseconds(
     38         from: Date(timeIntervalSince1970: TimeInterval(Int64.max) / 1000 + 1)
     39       )
     40     ) { error in
     41       XCTAssertEqual(error as? TeraClockError, .overflow)
     42     }
     43   }
     44 
     45   func testGenerationTransitionRejectsMaximumWithoutWrapping() throws {
     46     XCTAssertEqual(try TeraCheckedStateTransition.nextGeneration(after: 0), 1)
     47     XCTAssertEqual(try TeraCheckedStateTransition.nextGeneration(after: UInt64.max - 1), .max)
     48     XCTAssertThrowsError(try TeraCheckedStateTransition.nextGeneration(after: .max)) {
     49       error in
     50       XCTAssertEqual(error as? TeraStateTransitionError, .generationOverflow)
     51     }
     52   }
     53 }