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add methods

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Looly
2022-07-09 14:38:27 +08:00
parent 31e5eead89
commit e38f9bf9b8
5 changed files with 239 additions and 24 deletions
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52
hutool-core/src/test/java/cn/hutool/core/lang/func/LambdaUtilTest.java
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@@ -16,14 +16,14 @@ public class LambdaUtilTest {
@Test
public void getMethodNameTest() {
Func1<MyTeacher, String> lambda = MyTeacher::getAge;
final Func1<MyTeacher, String> lambda = MyTeacher::getAge;
final String methodName = LambdaUtil.getMethodName(lambda);
Assert.assertEquals("getAge", methodName);
}
@Test
public void getFieldNameTest() {
Func1<MyTeacher, String> lambda = MyTeacher::getAge;
final Func1<MyTeacher, String> lambda = MyTeacher::getAge;
final String fieldName = LambdaUtil.getFieldName(lambda);
Assert.assertEquals("age", fieldName);
}
@@ -32,43 +32,45 @@ public class LambdaUtilTest {
public void resolveTest() {
Stream.<Runnable>of(() -> {
// 引用构造函数
Func0<MyTeacher> lambda = MyTeacher::new;
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final Func0<MyTeacher> lambda = MyTeacher::new;
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
Assert.assertEquals(0, lambdaInfo.getParameterTypes().length);
Assert.assertEquals(MyTeacher.class, lambdaInfo.getReturnType());
}, () -> {
// 数组构造函数引用(此处数组构造参数)
Func1<Integer, MyTeacher[]> lambda = MyTeacher[]::new;
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final Func1<Integer, MyTeacher[]> lambda = MyTeacher[]::new;
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
Assert.assertEquals(int.class, lambdaInfo.getParameterTypes()[0]);
Assert.assertEquals(MyTeacher.class, ((Class<Array>) lambdaInfo.getReturnType()).getComponentType());
}, () -> {
// 引用静态方法
Func0<String> lambda = MyTeacher::takeAge;
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final Func0<String> lambda = MyTeacher::takeAge;
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
Assert.assertEquals(0, lambdaInfo.getParameterTypes().length);
Assert.assertEquals(String.class, lambdaInfo.getReturnType());
}, () -> {
// 引用特定对象的实例方法
Func0<String> lambda = new MyTeacher()::getAge;
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final Func0<String> lambda = new MyTeacher()::getAge;
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
Assert.assertEquals(0, lambdaInfo.getParameterTypes().length);
Assert.assertEquals(String.class, lambdaInfo.getReturnType());
}, () -> {
// 引用特定类型的任意对象的实例方法
Func1<MyTeacher, String> lambda = MyTeacher::getAge;
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final Func1<MyTeacher, String> lambda = MyTeacher::getAge;
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
Assert.assertEquals(0, lambdaInfo.getParameterTypes().length);
Assert.assertEquals(String.class, lambdaInfo.getReturnType());
}, () -> {
// 最最重要的！！！
Character character = '0';
Integer integer = 0;
SerThiCons<Object, Boolean, String> lambda = (obj, bool, str) -> {
final Character character = '0';
final Integer integer = 0;
final SerThiCons<Object, Boolean, String> lambda = (obj, bool, str) -> {
//noinspection ResultOfMethodCallIgnored
Objects.nonNull(character);
//noinspection ResultOfMethodCallIgnored
Objects.nonNull(integer);
};
LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
final LambdaInfo lambdaInfo = LambdaUtil.resolve(lambda);
// 获取闭包使用的参数类型
Assert.assertEquals(Character.class, lambdaInfo.getParameterTypes()[0]);
Assert.assertEquals(Integer.class, lambdaInfo.getParameterTypes()[1]);
@@ -102,35 +104,36 @@ public class LambdaUtilTest {
Assert.assertEquals(MyTeacher.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 引用特定对象的实例方法
Func0<String> lambda = myTeacher::getAge;
final Func0<String> lambda = myTeacher::getAge;
Assert.assertEquals(MyTeacher.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 枚举测试，只能获取到枚举类型
Func0<Integer> lambda = LambdaKindEnum.REF_NONE::ordinal;
final Func0<Integer> lambda = LambdaKindEnum.REF_NONE::ordinal;
Assert.assertEquals(Enum.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 调用父类方法，只能获取到父类类型
VoidFunc0 lambda = myTeacher::getId;
//noinspection ResultOfMethodCallIgnored
final VoidFunc0 lambda = myTeacher::getId;
Assert.assertEquals(Entity.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 引用静态带参方法，能够获取到正确的参数类型
Func1<MyTeacher, String> lambda = MyTeacher::takeAgeBy;
final Func1<MyTeacher, String> lambda = MyTeacher::takeAgeBy;
Assert.assertEquals(MyTeacher.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 引用父类静态带参方法，只能获取到父类类型
Func0<?> lambda = MyTeacher::takeId;
final Func0<?> lambda = MyTeacher::takeId;
Assert.assertEquals(Entity.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 引用静态无参方法，能够获取到正确的类型
Func0<String> lambda = MyTeacher::takeAge;
final Func0<String> lambda = MyTeacher::takeAge;
Assert.assertEquals(MyTeacher.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 引用父类静态无参方法，能够获取到正确的参数类型
Func1<MyTeacher, ?> lambda = MyTeacher::takeIdBy;
final Func1<MyTeacher, ?> lambda = MyTeacher::takeIdBy;
Assert.assertEquals(MyTeacher.class, LambdaUtil.getRealClass(lambda));
}, () -> {
// 数组测试
VoidFunc1<String[]> lambda = (String[] stringList) -> {};
final VoidFunc1<String[]> lambda = (String[] stringList) -> {};
Assert.assertEquals(String[].class, LambdaUtil.getRealClass(lambda));
}).forEach(Runnable::run);
}
@@ -176,6 +179,7 @@ public class LambdaUtilTest {
/**
* 测试Lambda类型枚举
*/
@SuppressWarnings("unused")
enum LambdaKindEnum {
REF_NONE,
REF_getField,

25
hutool-core/src/test/java/cn/hutool/core/lang/func/PredicateUtilTest.java Normal file
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@@ -0,0 +1,25 @@
package cn.hutool.core.lang.func;
import cn.hutool.core.collection.SetUtil;
import org.junit.Assert;
import org.junit.Test;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class PredicateUtilTest {
@Test
public void notContainsTest(){
final Set<String> sets = SetUtil.of("1", "2", "3");
final List<String> collect = Stream.of("3", "4", "5")
.filter(PredicateUtil.negate(sets::contains))
.collect(Collectors.toList());
Assert.assertEquals(2, collect.size());
Assert.assertEquals("4", collect.get(0));
Assert.assertEquals("5", collect.get(1));
}
}