Add Derby database implementation for Unit testing

build.gradle

@@ -39,22 +39,32 @@ repositories {
 
 
 dependencies {
-   //eliminate the :common project now since all method are in the excel2db class now
-   //compile project (":common")
+
    compile 'ch.qos.logback:logback-classic:1.2.2'
    compile 'javax.persistence:persistence-api:1.0.2'
    compile ('org.springframework:spring-context:4.3.7.RELEASE'){
        exclude module: 'commons-logging' // force Spring to use jcl-over-slf4j bridge
    }
+
    compile 'org.springframework.boot:spring-boot-starter-test:1.5.3.RELEASE'
    compile 'org.apache.poi:poi:3.15'
-   compile 'org.apache.poi:poi-ooxml:3.15' 
-   compile 'org.postgresql:postgresql:42.0.0.jre7'
+   compile 'org.apache.poi:poi-ooxml:3.15'
    compile 'org.apache.directory.studio:org.apache.commons.io:2.4'
+
+   compile 'org.postgresql:postgresql:42.0.0.jre7'
+
+   //jdbc drivers -- oracle, the Oracle driver is officially NOT shared in the Maven Repo
+   //because of license aspects
+   compile files('libs/ojdbc6.jar')
+
+   //Derby is used as a mockup object for In-Memory testing
+   compile 'org.apache.derby:derby:10.13.1.1'
+
    compile('junit:junit:4.12'){
         exclude group: 'org.hamcrest'
-    }
+   }
    compile 'org.hamcrest:hamcrest-library:1.3'
+
 }