diff --git a/app/src/androidTest/java/net/pokeranalytics/android/unitTests/StatsInstrumentedUnitTest.kt b/app/src/androidTest/java/net/pokeranalytics/android/unitTests/StatsInstrumentedUnitTest.kt
index 19369996..cbbacfc8 100644
--- a/app/src/androidTest/java/net/pokeranalytics/android/unitTests/StatsInstrumentedUnitTest.kt
+++ b/app/src/androidTest/java/net/pokeranalytics/android/unitTests/StatsInstrumentedUnitTest.kt
@@ -26,7 +26,7 @@ import java.util.*
 class StatsInstrumentedUnitTest : RealmInstrumentedUnitTest() {
 
 	// convenience extension
-	fun Session.Companion.testInstance(
+	private fun Session.Companion.testInstance(
 		netResult: Double = 0.0,
 		isTournament: Boolean = false,
 		startDate: Date = Date(),
@@ -64,20 +64,19 @@ class StatsInstrumentedUnitTest : RealmInstrumentedUnitTest() {
 
 		for (index in 0..100) {
 			Session.testInstance((-2000..2000).random().toDouble())
-			println("*** creating ${index}")
+			println("*** creating $index")
 		}
 
 		realm.commitTransaction()
 
-		var d1 = Date()
-		var result = realm.where(Result::class.java).sum("netResult")
-		var d2 = Date()
+		val d1 = Date()
+		realm.where(Result::class.java).sum("netResult")
+
+		val d2 = Date()
 		val duration = (d2.time - d1.time)
-		println("*** ended in ${duration} milliseconds")
+		println("*** ended in $duration milliseconds")
 	}
 
-
-
 	@Test
 	fun testSessionStats() {
 
@@ -664,4 +663,66 @@ class StatsInstrumentedUnitTest : RealmInstrumentedUnitTest() {
 		Assert.assertEquals(250.0, netResult?.value)
 	}
 
+	@Test
+	fun testUpdateRatedNetResultSessions() {
+
+		val realm = this.mockRealm
+		realm.beginTransaction()
+
+		val s1 = newSessionInstance(realm)
+		val s2 = newSessionInstance(realm)
+
+		val b1 = realm.createObject(Bankroll::class.java, "1")
+		val b2 = realm.createObject(Bankroll::class.java, "2")
+
+		val c1 = realm.createObject(Currency::class.java, "1")
+		val c2 = realm.createObject(Currency::class.java, "2")
+
+		c1.rate = 0.5
+		c2.rate = 1.0
+		b1.currency = c1
+		b2.currency = c2
+		s1.bankroll = b1
+		s2.bankroll = b2
+		s1.result?.netResult = 100.0
+		s2.result?.netResult = 200.0
+
+		realm.insert(s1)
+		realm.insert(s2)
+
+		realm.copyToRealmOrUpdate(s1)
+		realm.copyToRealmOrUpdate(s2)
+
+		realm.commitTransaction()
+
+		val computableResults = realm.where(ComputableResult::class.java).findAll()
+		val sets = realm.where(SessionSet::class.java).findAll()
+		val stats: List<Stat> = listOf(Stat.NETRESULT)
+		val group = ComputableGroup("test", computableResults, sets, stats)
+		val options = Calculator.Options()
+		val results: ComputedResults = Calculator.compute(group, options)
+
+		val netResult = results.computedStat(Stat.NETRESULT)
+		Assert.assertEquals(250.0, netResult?.value)
+
+		println("currency set rate real test starts here")
+
+		val updatedC2 = realm.where(Currency::class.java).equalTo("id", "2").findFirst()
+		updatedC2?.let {currency ->
+			val newC2 = realm.copyFromRealm(currency)
+			newC2.rate = 3.0
+			realm.executeTransaction {
+				it.copyToRealmOrUpdate(newC2)
+			}
+		}
+
+		val updatedComputableResults = realm.where(ComputableResult::class.java).findAll()
+		val updatedSets = realm.where(SessionSet::class.java).findAll()
+		val updatedGroup = ComputableGroup("test", updatedComputableResults, updatedSets, stats)
+		val updatedResults: ComputedResults = Calculator.compute(updatedGroup, options)
+		val updatedNetResult = updatedResults.computedStat(Stat.NETRESULT)
+		Assert.assertEquals(650.0, updatedNetResult?.value)
+
+	}
+
 }
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