add options

hutool-core/src/test/java/cn/hutool/core/bean/copier/BeanCopierTest.java

@@ -0,0 +1,50 @@
+package cn.hutool.core.bean.copier;
+
+import lombok.Data;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class BeanCopierTest {
+
+	/**
+	 * 测试在非覆盖模式下，目标对象有值则不覆盖
+	 */
+	@Test
+	public void beanToBeanNotOverrideTest() {
+		final A a = new A();
+		a.setValue("123");
+		final B b = new B();
+		b.setValue("abc");
+
+		final BeanCopier<B> copier = BeanCopier.create(a, b, CopyOptions.create().setOverride(false));
+		copier.copy();
+
+		Assert.assertEquals("abc", b.getValue());
+	}
+
+	/**
+	 * 测试在覆盖模式下，目标对象值被覆盖
+	 */
+	@Test
+	public void beanToBeanOverrideTest() {
+		final A a = new A();
+		a.setValue("123");
+		final B b = new B();
+		b.setValue("abc");
+
+		final BeanCopier<B> copier = BeanCopier.create(a, b, CopyOptions.create());
+		copier.copy();
+
+		Assert.assertEquals("123", b.getValue());
+	}
+
+	@Data
+	private static class A {
+		private String value;
+	}
+
+	@Data
+	private static class B {
+		private String value;
+	}
+}