test: add unit test[FileLoader, ObjectHolder, StringUtils] (apache#5308)

changes/en-us/2.0.0.md

@@ -33,7 +33,7 @@ The version is updated as follows:
   - [[#4880](https://github.com/seata/seata/pull/4880)] optimize logs when RM's commit return an exception and returns false
 
 ### test:
-  - [[#1234](https://github.com/seata/seata/pull/1234)] Please delete the sample later
+  - [[#5308](https://github.com/seata/seata/pull/5308)] add unit test [FileLoader, ObjectHolder, StringUtils]
 
 
 ### Contributors:
@@ -46,6 +46,7 @@ Thanks to these contributors for their code commits. Please report an unintended
   - [a364176773](https://github.com/a364176773)
   - [isharpever](https://github.com/isharpever)
   - [mxsm](https://github.com/mxsm)
+  - [liuqiufeng](https://github.com/liuqiufeng)
 
 Also, we receive many valuable issues, questions and advices from our community. Thanks for you all.
 

changes/zh-cn/2.0.0.md

@@ -33,7 +33,7 @@ Seata 是一款开源的分布式事务解决方案，提供高性能和简单
   - [[#4880](https://github.com/seata/seata/pull/4880)] 优化提交和回滚遇到异常时的日志输出，避免误解
 
 ### test：
-  - [[#1234](https://github.com/seata/seata/pull/1234)] 样例，后续请删除
+  - [[#5308](https://github.com/seata/seata/pull/5308)] 添加单元测试用例 [FileLoader, ObjectHolder, StringUtils]
 
 
 ### Contributors:
@@ -46,6 +46,7 @@ Seata 是一款开源的分布式事务解决方案，提供高性能和简单
   - [a364176773](https://github.com/a364176773)
   - [isharpever](https://github.com/isharpever)
   - [mxsm](https://github.com/mxsm)
+  - [liuqiufeng](https://github.com/liuqiufeng)
 
 同时，我们收到了社区反馈的很多有价值的issue和建议，非常感谢大家。
 

common/src/test/java/io/seata/common/holder/ObjectHolderTest.java

@@ -0,0 +1,49 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package io.seata.common.holder;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author liuqiufeng
+ */
+public class ObjectHolderTest {
+
+    @BeforeEach
+    void setUp() {
+        ObjectHolder.INSTANCE.setObject("objectHolderTest", this);
+    }
+
+    @AfterEach
+    void tearDown() {
+    }
+
+    @Test
+    public void testGetObjectByName() {
+        Object object = ObjectHolder.INSTANCE.getObject("objectHolderTest");
+        Assertions.assertNotNull(object);
+    }
+
+    @Test
+    public void testGetObjectByClass() {
+        Object object = ObjectHolder.INSTANCE.getObject(ObjectHolderTest.class);
+        Assertions.assertNotNull(object);
+    }
+}

common/src/test/java/io/seata/common/io/FileLoaderTest.java

@@ -0,0 +1,40 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package io.seata.common.io;
+
+import java.io.File;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author liuqiufeng
+ */
+public class FileLoaderTest {
+
+    @Test
+    public void testLoadExistFile() {
+        File file = FileLoader.load("io/TestFile.txt");
+        Assertions.assertTrue(file != null && file.exists());
+    }
+
+    @Test
+    public void testLoadNotExistFile() {
+        File file = FileLoader.load("io/NotExistFile.txt");
+        Assertions.assertTrue(file == null || !file.exists());
+    }
+}

common/src/test/java/io/seata/common/util/StringUtilsTest.java

@@ -58,6 +58,54 @@ public void testIsNullOrEmpty() {
         assertThat(StringUtils.isNullOrEmpty(" ")).isFalse();
     }
 
+    @Test
+    public void testIsBlank() {
+        assertThat(StringUtils.isBlank(null)).isTrue();
+        assertThat(StringUtils.isBlank("abc")).isFalse();
+        assertThat(StringUtils.isBlank("")).isTrue();
+        assertThat(StringUtils.isBlank(" ")).isTrue();
+    }
+
+    @Test
+    public void testIsNotBlank() {
+        assertThat(StringUtils.isNotBlank(null)).isFalse();
+        assertThat(StringUtils.isNotBlank("abc")).isTrue();
+        assertThat(StringUtils.isNotBlank("")).isFalse();
+        assertThat(StringUtils.isNotBlank(" ")).isFalse();
+    }
+
+    @Test
+    public void testTrimToNull() {
+        assertThat(StringUtils.trimToNull(null)).isNull();
+        assertThat(StringUtils.trimToNull("abc")).isEqualTo("abc");
+        assertThat(StringUtils.trimToNull("")).isNull();
+        assertThat(StringUtils.trimToNull(" ")).isNull();
+    }
+
+    @Test
+    public void testTrim() {
+        assertThat(StringUtils.trim(null)).isNull();
+        assertThat(StringUtils.trim("abc")).isEqualTo("abc");
+        assertThat(StringUtils.trim("")).isEqualTo("");
+        assertThat(StringUtils.trim(" ")).isEqualTo("");
+    }
+
+    @Test
+    public void testIsEmpty() {
+        assertThat(StringUtils.isEmpty(null)).isTrue();
+        assertThat(StringUtils.isEmpty("abc")).isFalse();
+        assertThat(StringUtils.isEmpty("")).isTrue();
+        assertThat(StringUtils.isEmpty(" ")).isFalse();
+    }
+
+    @Test
+    public void testIsNotEmpty() {
+        assertThat(StringUtils.isNotEmpty(null)).isFalse();
+        assertThat(StringUtils.isNotEmpty("abc")).isTrue();
+        assertThat(StringUtils.isNotEmpty("")).isFalse();
+        assertThat(StringUtils.isNotEmpty(" ")).isTrue();
+    }
+
     @Test
     public void testHump2Line(){
         assertThat(StringUtils.hump2Line("abc-d").equals("abcD")).isTrue();

common/src/test/resources/io/TestFile.txt

@@ -0,0 +1,15 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */