add test coverage and jdk11

.travis.yml

@@ -2,6 +2,8 @@ language: java
 sudo: false # faster builds
 
 jdk:
+  - openjdk11
+  - oraclejdk11
   - openjdk8
   - oraclejdk8
 

README.md

@@ -2,6 +2,7 @@
     <div class="iteye-blog-content-contain">
 
 [![Build Status](https://travis-ci.com/alibaba/canal.svg?branch=master)](https://travis-ci.com/alibaba/canal)
+[![codecov](https://codecov.io/gh/alibaba/canal/branch/master/graph/badge.svg)](https://codecov.io/gh/alibaba/canal)
 ![maven](https://img.shields.io/maven-central/v/com.alibaba.otter/canal.svg)
 ![license](https://img.shields.io/github/license/alibaba/canal.svg)
 [![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/alibaba/canal.svg)](http://isitmaintained.com/project/alibaba/canal "Average time to resolve an issue")

pom.xml

@@ -399,7 +399,25 @@
                   <additionalparam>-Xdoclint:none</additionalparam>
                 </configuration>
             </plugin>
-            
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+                <version>${jacoco-maven-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>prepare-agent</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>report</id>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>report</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
         <sourceDirectory>src/main/java</sourceDirectory>
         <testSourceDirectory>src/test/java</testSourceDirectory>