Added ManualClock to Test Module

test/api/test.api

@@ -13,6 +13,16 @@ public final class com/juul/tuulbox/test/AssertKt {
 	public static synthetic fun assertSimilar-dWUq8MI$default (Lkotlinx/datetime/LocalDateTime;JLkotlinx/datetime/LocalDateTime;Lkotlinx/datetime/TimeZone;ILjava/lang/Object;)V
 }
 
+public final class com/juul/tuulbox/test/ManualClock : kotlinx/datetime/Clock {
+	public fun <init> ()V
+	public fun <init> (Lkotlinx/datetime/Instant;)V
+	public synthetic fun <init> (Lkotlinx/datetime/Instant;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun <init> (Lkotlinx/datetime/LocalDateTime;Lkotlinx/datetime/TimeZone;)V
+	public fun now ()Lkotlinx/datetime/Instant;
+	public final fun set (Lkotlinx/datetime/Instant;)V
+	public final fun set (Lkotlinx/datetime/LocalDateTime;Lkotlinx/datetime/TimeZone;)V
+}
+
 public final class com/juul/tuulbox/test/RunTestKt {
 	public static final fun runTest (Lkotlin/jvm/functions/Function2;)V
 }

test/src/commonMain/kotlin/ManualClock.kt

@@ -0,0 +1,32 @@
+package com.juul.tuulbox.test
+
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+import kotlinx.datetime.LocalDateTime
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.toInstant
+
+private val defaultTime: Instant = LocalDateTime(
+    year = 2022,
+    monthNumber = 3,
+    dayOfMonth = 8,
+    hour = 8,
+    minute = 15,
+).toInstant(TimeZone.UTC)
+
+public class ManualClock(
+    private var time: Instant = defaultTime
+) : Clock {
+
+    public constructor(time: LocalDateTime, timeZone: TimeZone) : this(time.toInstant(timeZone))
+
+    override fun now(): Instant = time
+
+    public fun set(to: Instant) {
+        time = to
+    }
+
+    public fun set(to: LocalDateTime, timeZone: TimeZone) {
+        time = to.toInstant(timeZone)
+    }
+}