Count items in a stream after performing a few operations with streams

amigoscode · LoretoSystems · Jul 14, 2023 · Jul 15, 2023 · Jul 15, 2023 · Jul 15, 2023
commit 1a505c409d48edaafdaaed49809f2af8bff24b4f
diff --git a/src/test/java/com/amigoscode/examples/WorkingWithStreams.java b/src/test/java/com/amigoscode/examples/WorkingWithStreams.java
diff --git a/src/test/java/com/amigoscode/examples/WorkingWithStreamsTest.java b/src/test/java/com/amigoscode/examples/WorkingWithStreamsTest.java
@@ -0,0 +1,25 @@
+package com.amigoscode.examples;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+class WorkingWithStreamsTest {
+
+    @Test
+    void count_items_on_stream() {
+        var names = List.of("Amigoscode", "Alex", "Zara");
+        var stream = names.stream();
+
+        var count = stream.limit(2)
+                .map(null)
+                .sorted(null)
+                .dropWhile(null)
+                .count();
+
+        assertThat(count).isEqualTo(2);
+    }
+}