From ae26f64a84d97cbec36e11c2970f4f874d8f5ac7 Mon Sep 17 00:00:00 2001
From: lixiaohua <1124205446@qq.com>
Date: Mon, 10 Aug 2020 17:32:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=AD=E8=A8=80=E5=A2=9E=E5=8A=A0=E6=94=AF?=
 =?UTF-8?q?=E6=8C=81=E8=87=AA=E5=AE=9A=E4=B9=89=E5=BC=82=E5=B8=B8?=
MIME-Version: 1.0
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---
 .../main/java/cn/hutool/core/lang/Assert.java | 20 +++++++++++++++++++
 .../java/cn/hutool/core/lang/AssertTest.java  | 12 +++++++++++
 2 files changed, 32 insertions(+)

diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/Assert.java b/hutool-core/src/main/java/cn/hutool/core/lang/Assert.java
index 217760e66..87fe42724 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/Assert.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/Assert.java
@@ -2,8 +2,11 @@ package cn.hutool.core.lang;
 
 import java.util.Collection;
 import java.util.Map;
+import java.util.function.Supplier;
 
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.lang.func.Func0;
+import cn.hutool.core.lang.func.VoidFunc0;
 import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.StrUtil;
 
@@ -16,6 +19,23 @@ import cn.hutool.core.util.StrUtil;
  */
 public class Assert {
 
+	/**
+	 * 断言是否为真，如果为 {@code false} 抛出给定的异常<br>
+	 *
+	 * <pre class="code">
+	 * Assert.isTrue(i &gt; 0, IllegalArgumentException::new);
+	 * </pre>
+	 *
+	 * @param expression 布尔值
+	 * @param supplier   指定断言不通过时抛出的异常
+	 * @throws X if expression is {@code false}
+	 */
+	public static <X extends Throwable> void isTrue(boolean expression, Func0<? extends X> supplier) throws X {
+		if (false == expression) {
+			throw supplier.callWithRuntimeException();
+		}
+	}
+
 	/**
 	 * 断言是否为真，如果为 {@code false} 抛出 {@code IllegalArgumentException} 异常<br>
 	 * 
diff --git a/hutool-core/src/test/java/cn/hutool/core/lang/AssertTest.java b/hutool-core/src/test/java/cn/hutool/core/lang/AssertTest.java
index d7136f271..492b82532 100644
--- a/hutool-core/src/test/java/cn/hutool/core/lang/AssertTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/lang/AssertTest.java
@@ -14,4 +14,16 @@ public class AssertTest {
 		String a = null;
 		cn.hutool.core.lang.Assert.isNull(a);
 	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void isTrueTest() {
+		int i = 0;
+		cn.hutool.core.lang.Assert.isTrue(i > 0, IllegalArgumentException::new);
+	}
+
+	@Test(expected = IndexOutOfBoundsException.class)
+	public void isTrueTest2() {
+		int i = -1;
+		cn.hutool.core.lang.Assert.isTrue(i >= 0, IndexOutOfBoundsException::new);
+	}
 }