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authorAllan Wang <me@allanwang.ca>2018-12-26 18:10:04 -0500
committerAllan Wang <me@allanwang.ca>2018-12-26 18:10:04 -0500
commit3a3096be58bacd9408c10ef5d8add6c32204d4e9 (patch)
treeb51fac240d8dd7017f290f3d62391b51c5acfa39 /app/src/test
parentc9769223cb014f588d93c1a73da157010e68a1c8 (diff)
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Add new flyweight
Diffstat (limited to 'app/src/test')
-rw-r--r--app/src/test/kotlin/com/pitchedapps/frost/rx/FlyweightTest.kt108
1 files changed, 108 insertions, 0 deletions
diff --git a/app/src/test/kotlin/com/pitchedapps/frost/rx/FlyweightTest.kt b/app/src/test/kotlin/com/pitchedapps/frost/rx/FlyweightTest.kt
new file mode 100644
index 00000000..834163bd
--- /dev/null
+++ b/app/src/test/kotlin/com/pitchedapps/frost/rx/FlyweightTest.kt
@@ -0,0 +1,108 @@
+package com.pitchedapps.frost.rx
+
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.async
+import kotlinx.coroutines.runBlocking
+import org.junit.Rule
+import org.junit.rules.Timeout
+import java.util.concurrent.atomic.AtomicInteger
+import kotlin.test.BeforeTest
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+import kotlin.test.fail
+
+class FlyweightTest {
+
+ @get:Rule
+ val globalTimeout: Timeout = Timeout.seconds(5)
+
+ lateinit var flyweight: Flyweight<Int, Int>
+
+ lateinit var callCount: AtomicInteger
+
+ private val LONG_RUNNING_KEY = -78
+
+ @BeforeTest
+ fun before() {
+ callCount = AtomicInteger(0)
+ flyweight = Flyweight(GlobalScope, 100, 200L) {
+ callCount.incrementAndGet()
+ when (it) {
+ LONG_RUNNING_KEY -> Thread.sleep(100000)
+ else -> Thread.sleep(100)
+ }
+ it * 2
+ }
+ }
+
+ @Test
+ fun basic() {
+ assertEquals(2, runBlocking { flyweight.fetch(1) }, "Invalid result")
+ assertEquals(1, callCount.get(), "1 call expected")
+ }
+
+ @Test
+ fun multipleWithOneKey() {
+ val results: List<Int> = runBlocking {
+ (0..1000).map {
+ flyweight.scope.async {
+ flyweight.fetch(1)
+ }
+ }.map { it.await() }
+ }
+ assertEquals(1, callCount.get(), "1 call expected")
+ assertEquals(1001, results.size, "Incorrect number of results returned")
+ assertTrue(results.all { it == 2 }, "Result should all be 2")
+ }
+
+ @Test
+ fun consecutiveReuse() {
+ runBlocking {
+ flyweight.fetch(1)
+ assertEquals(1, callCount.get(), "1 call expected")
+ flyweight.fetch(1)
+ assertEquals(1, callCount.get(), "Reuse expected")
+ Thread.sleep(300)
+ flyweight.fetch(1)
+ assertEquals(2, callCount.get(), "Refetch expected")
+ }
+ }
+
+ @Test
+ fun invalidate() {
+ runBlocking {
+ flyweight.fetch(1)
+ assertEquals(1, callCount.get(), "1 call expected")
+ flyweight.invalidate(1)
+ flyweight.fetch(1)
+ assertEquals(2, callCount.get(), "New call expected")
+ }
+ }
+
+ @Test
+ fun destroy() {
+ runBlocking {
+ val longRunningResult = async { flyweight.fetch(LONG_RUNNING_KEY) }
+ flyweight.fetch(1)
+ flyweight.cancel()
+ try {
+ flyweight.fetch(1)
+ fail("Flyweight should not be fulfilled after it is destroyed")
+ } catch (e: Exception) {
+ assertEquals("Flyweight is not active", e.message, "Incorrect error found on fetch after destruction")
+ }
+ try {
+ longRunningResult.await()
+ fail("Flyweight should have cancelled previously running requests")
+ } catch (e: Exception) {
+ assertEquals(
+ "Flyweight cancelled",
+ e.message,
+ "Incorrect error found on fetch cancelled by destruction"
+ )
+ }
+ println("Done")
+ }
+ }
+} \ No newline at end of file