add test for serialization api & fastjson & fst module (apache#1718)

dubbo-serialization/dubbo-serialization-fastjson/src/test/java/com/alibaba/dubbo/common/model/BizExceptionNoDefaultConstructor.java → dubbo-serialization/dubbo-serialization-api/src/test/java/com/alibaba/dubbo/common/serialize/support/SerializableClassRegistryTest.java

@@ -14,13 +14,28 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.alibaba.dubbo.common.model;
+package com.alibaba.dubbo.common.serialize.support;
 
-public class BizExceptionNoDefaultConstructor extends RuntimeException {
+import org.junit.Test;
 
-    private static final long serialVersionUID = 1L;
+import java.util.Set;
 
-    public BizExceptionNoDefaultConstructor(String message) {
-        super(message);
+import static org.hamcrest.Matchers.hasSize;
+import static org.junit.Assert.assertThat;
+
+public class SerializableClassRegistryTest {
+    @Test
+    public void testAddClasses() {
+        SerializableClassRegistry.registerClass(A.class);
+        SerializableClassRegistry.registerClass(B.class);
+
+        Set<Class> registeredClasses = SerializableClassRegistry.getRegisteredClasses();
+        assertThat(registeredClasses, hasSize(2));
+    }
+
+    private class A {
+    }
+
+    private class B {
     }
 }

dubbo-serialization/dubbo-serialization-fastjson/src/main/java/com/alibaba/dubbo/common/serialize/fastjson/FastJsonObjectInput.java

@@ -28,9 +28,6 @@
 import java.io.Reader;
 import java.lang.reflect.Type;
 
-/**
- * JsonObjectInput
- */
 public class FastJsonObjectInput implements ObjectInput {
 
     private final BufferedReader reader;
@@ -45,74 +42,42 @@ public FastJsonObjectInput(Reader reader) {
 
     @Override
     public boolean readBool() throws IOException {
-        try {
-            return readObject(boolean.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(boolean.class);
     }
 
     @Override
     public byte readByte() throws IOException {
-        try {
-            return readObject(byte.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(byte.class);
     }
 
     @Override
     public short readShort() throws IOException {
-        try {
-            return readObject(short.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(short.class);
     }
 
     @Override
     public int readInt() throws IOException {
-        try {
-            return readObject(int.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(int.class);
     }
 
     @Override
     public long readLong() throws IOException {
-        try {
-            return readObject(long.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(long.class);
     }
 
     @Override
     public float readFloat() throws IOException {
-        try {
-            return readObject(float.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(float.class);
     }
 
     @Override
     public double readDouble() throws IOException {
-        try {
-            return readObject(double.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(double.class);
     }
 
     @Override
     public String readUTF() throws IOException {
-        try {
-            return readObject(String.class);
-        } catch (ClassNotFoundException e) {
-            throw new IOException(e.getMessage());
-        }
+        return read(String.class);
     }
 
     @Override
@@ -128,8 +93,7 @@ public Object readObject() throws IOException, ClassNotFoundException {
 
     @Override
     public <T> T readObject(Class<T> cls) throws IOException, ClassNotFoundException {
-        String json = readLine();
-        return JSON.parseObject(json, cls);
+        return read(cls);
     }
 
     @Override
@@ -145,4 +109,8 @@ private String readLine() throws IOException, EOFException {
         return line;
     }
 
+    private <T> T read(Class<T> cls) throws IOException {
+        String json = readLine();
+        return JSON.parseObject(json, cls);
+    }
 }

dubbo-serialization/dubbo-serialization-fastjson/src/main/java/com/alibaba/dubbo/common/serialize/fastjson/FastJsonObjectOutput.java

@@ -27,9 +27,6 @@
 import java.io.PrintWriter;
 import java.io.Writer;
 
-/**
- * JsonObjectOutput
- */
 public class FastJsonObjectOutput implements ObjectOutput {
 
     private final PrintWriter writer;

dubbo-serialization/dubbo-serialization-fastjson/src/main/java/com/alibaba/dubbo/common/serialize/fastjson/FastJsonSerialization.java

@@ -25,9 +25,6 @@
 import java.io.InputStream;
 import java.io.OutputStream;
 
-/**
- * FastJsonSerialization
- */
 public class FastJsonSerialization implements Serialization {
 
     @Override