[FOR 5094 utils] add unit tests in nacos-core. (alibaba#6037)

* [Unit tests] [RemoteUtils] add unit tests.

* [Unit tests] [StringPool] add unit tests.

* [Unit tests] [OverrideParameterRequestWrapper] add unit tests.

* [Unit tests] [WebUtils] add unit tests.

* [Unit tests] [ClassUtils] add unit tests.

core/src/test/java/com/alibaba/nacos/core/utils/ClassUtilsTest.java

@@ -22,6 +22,10 @@
 
 import java.util.List;
 
+/**
+ *
+ * {@link ClassUtils} unit tests.
+ */
 public class ClassUtilsTest {
 
     @Test
@@ -32,4 +36,23 @@ public void testGeneric() {
         }.getType());
     }
 
+    @Test
+    public void testFindClassByName() {
+        Class clazz = ClassUtils.findClassByName("java.lang.Integer");
+        Assert.assertEquals("java.lang.Integer", clazz.getName());
+    }
+
+    @Test
+    public void testGetName() {
+        final String name = "java.lang.Integer";
+        Integer val = 1;
+        Assert.assertEquals(name, ClassUtils.getName(val));
+        Assert.assertEquals(name, ClassUtils.getName(Integer.class));
+
+        Assert.assertEquals(name, ClassUtils.getCanonicalName(val));
+        Assert.assertEquals(name, ClassUtils.getCanonicalName(Integer.class));
+
+        Assert.assertEquals("Integer", ClassUtils.getSimplaName(val));
+        Assert.assertEquals("Integer", ClassUtils.getSimplaName(Integer.class));
+    }
 }

core/src/test/java/com/alibaba/nacos/core/utils/OverrideParameterRequestWrapperTest.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 1999-2021 Alibaba Group Holding Ltd.
+ *
+ * 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 com.alibaba.nacos.core.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.mock.web.MockHttpServletRequest;
+
+/**
+ * {@link OverrideParameterRequestWrapper} unit tests.
+ *
+ * @author chenglu
+ * @date 2021-06-10 14:11
+ */
+public class OverrideParameterRequestWrapperTest {
+
+    @Test
+    public void testOverrideParameterRequestWrapper() {
+        MockHttpServletRequest httpServletRequest = new MockHttpServletRequest();
+        httpServletRequest.addParameter("test1", "value1");
+        OverrideParameterRequestWrapper wrapper = OverrideParameterRequestWrapper.buildRequest(httpServletRequest);
+        String value1 = wrapper.getParameter("test1");
+        Assert.assertEquals("value1", value1);
+
+        wrapper.addParameter("test2", "value2");
+        Assert.assertEquals("value2", wrapper.getParameter("test2"));
+    }
+}

core/src/test/java/com/alibaba/nacos/core/utils/RemoteUtilsTest.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 1999-2021 Alibaba Group Holding Ltd.
+ *
+ * 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 com.alibaba.nacos.core.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * {@link RemoteUtils} unit tests.
+ *
+ * @author chenglu
+ * @date 2021-06-10 13:17
+ */
+public class RemoteUtilsTest {
+
+    @Test
+    public void testGetRemoteExecutorTimesOfProcessors() {
+        int defaultExpectVal = 1 << 4;
+        int defaultVal = RemoteUtils.getRemoteExecutorTimesOfProcessors();
+        Assert.assertEquals(defaultExpectVal, defaultVal);
+
+        System.setProperty("remote.executor.times.of.processors", "10");
+        int val1 = RemoteUtils.getRemoteExecutorTimesOfProcessors();
+        Assert.assertEquals(10, val1);
+
+        System.setProperty("remote.executor.times.of.processors", "-1");
+        int val2 = RemoteUtils.getRemoteExecutorTimesOfProcessors();
+        Assert.assertEquals(defaultExpectVal, val2);
+    }
+
+    @Test
+    public void testGetRemoteExecutorQueueSize() {
+        int defaultExpectVal = 1 << 14;
+        int defaultVal = RemoteUtils.getRemoteExecutorQueueSize();
+        Assert.assertEquals(defaultExpectVal, defaultVal);
+
+        System.setProperty("remote.executor.queue.size", "10");
+        int val1 = RemoteUtils.getRemoteExecutorQueueSize();
+        Assert.assertEquals(10, val1);
+
+        System.setProperty("remote.executor.queue.size", "-1");
+        int val2 = RemoteUtils.getRemoteExecutorQueueSize();
+        Assert.assertEquals(defaultExpectVal, val2);
+    }
+}

core/src/test/java/com/alibaba/nacos/core/utils/StringPoolTest.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * 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 com.alibaba.nacos.core.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * {@link StringPool} unit tests.
+ *
+ * @author chenglu
+ * @date 2021-06-10 13:52
+ */
+public class StringPoolTest {
+
+    @Test
+    public void testStringPool() {
+        String val1 = StringPool.get("test");
+        Assert.assertEquals("test", val1);
+
+        String val2 = StringPool.get(null);
+        Assert.assertEquals(null, val2);
+
+        long size1 = StringPool.size();
+        Assert.assertEquals(1, size1);
+
+        StringPool.remove("test");
+        long size2 = StringPool.size();
+        Assert.assertEquals(0, size2);
+    }
+}

core/src/test/java/com/alibaba/nacos/core/utils/WebUtilsTest.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 1999-2021 Alibaba Group Holding Ltd.
+ *
+ * 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 com.alibaba.nacos.core.utils;
+
+import com.alibaba.nacos.common.constant.HttpHeaderConsts;
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.mock.web.MockHttpServletRequest;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * {@link WebUtils} unit tests.
+ *
+ * @author chenglu
+ * @date 2021-06-10 13:33
+ */
+public class WebUtilsTest {
+
+    @Test
+    public void testRequired() {
+        final String key = "key";
+        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
+        try {
+            WebUtils.required(servletRequest, key);
+        } catch (Exception e) {
+            Assert.assertTrue(e instanceof IllegalArgumentException);
+        }
+
+        servletRequest.addParameter(key, "value");
+        String val = WebUtils.required(servletRequest, key);
+        Assert.assertEquals("value", val);
+    }
+
+    @Test
+    public void testOptional() {
+        final String key = "key";
+        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
+        String val1 = WebUtils.optional(servletRequest, key, "value");
+        Assert.assertEquals("value", val1);
+
+        servletRequest.addParameter(key, "value1");
+        Assert.assertEquals("value1", WebUtils.optional(servletRequest, key, "value"));
+    }
+
+    @Test
+    public void testGetUserAgent() {
+        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
+        String userAgent = WebUtils.getUserAgent(servletRequest);
+        Assert.assertEquals("", userAgent);
+
+        servletRequest.addHeader(HttpHeaderConsts.CLIENT_VERSION_HEADER, "0");
+        Assert.assertEquals("0", WebUtils.getUserAgent(servletRequest));
+
+        servletRequest.addHeader(HttpHeaderConsts.USER_AGENT_HEADER, "1");
+        Assert.assertEquals("1", WebUtils.getUserAgent(servletRequest));
+    }
+
+    @Test
+    public void testGetAcceptEncoding() {
+        MockHttpServletRequest servletRequest = new MockHttpServletRequest();
+        Assert.assertEquals(StandardCharsets.UTF_8.name(), WebUtils.getAcceptEncoding(servletRequest));
+
+        servletRequest.addHeader(HttpHeaderConsts.ACCEPT_ENCODING, "gzip, deflate, br");
+        Assert.assertEquals("gzip", WebUtils.getAcceptEncoding(servletRequest));
+    }
+}