feat(pairwise): tests

hoc081098 · Jul 6, 2022 · 93efe74 · 93efe74
1 parent 6f29088
commit 93efe74
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/src/commonTest/kotlin/com/hoc081098/flowext/PairwiseTest.kt b/src/commonTest/kotlin/com/hoc081098/flowext/PairwiseTest.kt
@@ -33,6 +33,7 @@ import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.emptyFlow
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.flowOf
+import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.mapNotNull
 import kotlinx.coroutines.flow.take
 
@@ -67,6 +68,23 @@ class PairwiseTest : BaseStepTest() {
       )
   }
 
+  @Test
+  fun testPairwiseNullable() = runTest {
+    // 0 - null - 2 - null
+
+    range(0, 4)
+      .map { it.takeIf { it % 2 == 0 } }
+      .pairwise()
+      .test(
+        listOf(
+          Event.Value(0 to null),
+          Event.Value(null to 2),
+          Event.Value(2 to null),
+          Event.Complete
+        )
+      )
+  }
+
   @Test
   fun testPairwiseEmpty() = runTest {
     emptyFlow<Int>()