Try to make Gradle build work

Add a dependency that is reported as missing locally with JDK 11
Combine common test-dependencies
Avoid running base-class BaseTestMissingWorkbook, only the derived class is actually a unit-test

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1885074 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

         japicmpversion = '4.1.2'
         junitVersion = '5.7.0'
         mockitoVersion = '3.6.0'
+        hamcrestVersion = '2.2'
         slf4jVersion = '1.7.30'
         xmlbeansVersion = '4.0.0'
     }
         }
     }
 
+    dependencies {
+        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
+        testCompile "org.mockito:mockito-core:${mockitoVersion}"
+        testCompile "org.hamcrest:hamcrest:${hamcrestVersion}"
+    }
+
     jar {
         manifest {
             attributes 'Implementation-Title': 'Apache POI', 'Implementation-Version': version
         compile 'javax.activation:activation:1.1.1'
         compile 'com.zaxxer:SparseBitSet:1.2'
 
-        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
-        testCompile "org.mockito:mockito-core:${mockitoVersion}"
         testCompile 'org.reflections:reflections:0.9.12'
         testRuntime "org.slf4j:slf4j-simple:${slf4jVersion}"
-
-        testCompile 'org.hamcrest:hamcrest:2.2'
     }
 
     jar {
         compile project(':scratchpad')		// TODO: get rid of this dependency!
         compile files("../../build/dist/maven/poi-ooxml-full/poi-ooxml-full-${version}.jar")
 
-        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
-        testCompile "org.mockito:mockito-core:${mockitoVersion}"
         testCompile 'org.xmlunit:xmlunit-core:2.8.0'
         testCompile 'org.reflections:reflections:0.9.12'
         testCompile project(path: ':main', configuration: 'tests')
         compile project(':ooxml')
 
         testCompile project(path: ':main', configuration: 'tests')
-        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
-        testCompile 'org.hamcrest:hamcrest:2.2'
     }
 
     jar {
         compile project(':scratchpad')
         compile project(':examples')
 
-        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
-
         testCompile "org.apache.xmlbeans:xmlbeans:${xmlbeansVersion}"
 
         testCompile files("../../build/dist/maven/poi-ooxml-full/poi-ooxml-full-${version}.jar")
 
         // cyclic-dependency here: compile project(':ooxml')
 
-        testCompile "org.junit.jupiter:junit-jupiter:${junitVersion}"
-        testCompile "org.mockito:mockito-core:${mockitoVersion}"
         testCompile project(path: ':main', configuration: 'tests')
     }
 

src/testcases/org/apache/poi/ss/formula/BaseTestMissingWorkbook.java

 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-public class BaseTestMissingWorkbook {
+public abstract class BaseTestMissingWorkbook {
     protected Workbook mainWorkbook;
     protected Workbook sourceWorkbook;
 
     protected final String SOURCE_DUMMY_WORKBOOK_FILENAME;
     protected final String SOURCE_WORKBOOK_FILENAME;
 
-    public BaseTestMissingWorkbook() {
-        this("52575_main.xls", "source_dummy.xls", "52575_source.xls");
-    }
-
     protected BaseTestMissingWorkbook(String MAIN_WORKBOOK_FILENAME,
 									  String SOURCE_DUMMY_WORKBOOK_FILENAME, String SOURCE_WORKBOOK_FILENAME) {
         this.MAIN_WORKBOOK_FILENAME = MAIN_WORKBOOK_FILENAME;