Snap for 7668063 from 531d55eaeac09ad6cde55687ef802d4235040985 to simpleperf-releasesimpleperf-release

Change-Id: I844c9c61f2e31a265c36a483e1509e0e08c508d6

1 files changed, 45 insertions, 0 deletions

diff --git a/kotlinx-coroutines-core/common/test/flow/terminal/LastTest.kt b/kotlinx-coroutines-core/common/test/flow/terminal/LastTest.kt
new file mode 100644
index 00000000..e7699ccc
--- /dev/null
+++ b/kotlinx-coroutines-core/common/test/flow/terminal/LastTest.kt
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.coroutines.flow
+
+import kotlinx.coroutines.*
+import kotlin.test.*
+
+class LastTest : TestBase() {
+    @Test
+    fun testLast() = runTest {
+        val flow = flowOf(1, 2, 3)
+        assertEquals(3, flow.last())
+        assertEquals(3, flow.lastOrNull())
+    }
+
+    @Test
+    fun testNulls() = runTest {
+        val flow = flowOf(1, null)
+        assertNull(flow.last())
+        assertNull(flow.lastOrNull())
+    }
+
+    @Test
+    fun testNullsLastOrNull() = runTest {
+        val flow = flowOf(null, 1)
+        assertEquals(1, flow.lastOrNull())
+    }
+
+    @Test
+    fun testEmptyFlow() = runTest {
+        assertFailsWith<NoSuchElementException> { emptyFlow<Int>().last() }
+        assertNull(emptyFlow<Int>().lastOrNull())
+    }
+
+    @Test
+    fun testBadClass() = runTest {
+        val instance = BadClass()
+        val flow = flowOf(instance)
+        assertSame(instance, flow.last())
+        assertSame(instance, flow.lastOrNull())
+
+    }
+}