From a2daab41d075ce9909964a7c157ffcf704e133de Mon Sep 17 00:00:00 2001
From: bunny <1319900154@qq.com>
Date: Tue, 30 Jul 2024 16:56:23 +0800
Subject: [PATCH] =?UTF-8?q?:rocket:=20feat(=E6=96=B0=E5=A2=9E):=20Stream?=
 =?UTF-8?q?=E7=9A=84=E4=BD=BF=E7=94=A8?=
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---
 .../test/java/cn/bunny/stream/StreamTest.java | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 service/src/test/java/cn/bunny/stream/StreamTest.java

diff --git a/service/src/test/java/cn/bunny/stream/StreamTest.java b/service/src/test/java/cn/bunny/stream/StreamTest.java
new file mode 100644
index 0000000..1cf9d07
--- /dev/null
+++ b/service/src/test/java/cn/bunny/stream/StreamTest.java
@@ -0,0 +1,42 @@
+package cn.bunny.stream;
+
+import org.junit.jupiter.api.Test;
+
+import java.math.BigInteger;
+import java.util.List;
+import java.util.stream.Stream;
+
+public class StreamTest {
+    @Test
+    void testStream() {
+        // 产生随机数字流，会一直输出
+        Stream<Double> stream = Stream.generate(Math::random);
+        stream.forEach(System.out::println);
+    }
+
+    @Test
+    void internalStream() {
+        // 一直循环添加
+        Stream<BigInteger> stream = Stream.iterate(BigInteger.ZERO, n -> n.add(BigInteger.ONE));
+        stream.forEach(System.out::println);
+    }
+
+    @Test
+    void testGeneratorLimit() {
+        // 创建指定长度随机数
+        List<Double> list = Stream.generate(Math::random).limit(10).toList();
+        list.forEach(System.out::println);
+
+        // 创建不好喊任何元素的流
+        Stream<Object> empty = Stream.empty();
+        empty.forEach(System.out::println);
+
+        // 创建一个给定值的流
+        Stream<Integer> integerStream = Stream.of(1, 2, 3, 4, 5, 6);
+        integerStream.forEach(System.out::println);
+
+        // 使用 ofNullable 创建一个流，如果值为 null 则创建一个空流
+        Stream<String> stream = Stream.ofNullable("hello");
+        stream.forEach(System.out::println);
+    }
+}