Add a small java test on the kiwix-lib.

Will the compilation should be made by meson.
It seems it is not possible to specify a existing jar
to link with. Use a custom script for now.

.gitignore

@@ -1,3 +1,4 @@
 .idea/
 *.swp
 subprojects/googletest-release*
+*.class

src/wrapper/java/meson.build

@@ -44,8 +44,12 @@ kiwix_sources += jni_sources + [kiwix_jni]
 
 if 'java' in wrapper
   kiwix_jar = jar('kiwixlib', java_sources)
+  #junit_jar = files('org/kiwix/testing/junit-4.13.jar')
+  #test_jar = jar('testing', 'org/kiwix/testing/test.java',
+  #               link_with: [kiwix_jar, junit_jar])
+  #test('javatest', test_jar)
 endif
 
-install_subdir('org', install_dir: 'kiwix-lib/java')
+install_subdir('org', install_dir: 'kiwix-lib/java', exclude_directories: ['kiwix/testing'])
 install_subdir('res', install_dir: 'kiwix-lib')
 install_data('AndroidManifest.xml', install_dir: 'kiwix-lib')

src/wrapper/java/org/kiwix/testing/compile_test.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/bash
+
+# This script compile the unit test to test the java wrapper.
+# This is not integrated in meson because ... this is not so easy.
+
+
+KIWIX_LIB_JAR=$1
+if [ -z $KIWIX_LIB_JAR ]
+then
+  echo "You must give the path to the kiwixlib.jar as first argument"
+  exit 1
+fi
+
+KIWIX_LIB_DIR=$2
+if [ -z $KIWIX_LIB_DIR ]
+then
+  echo "You must give the path to directory containing libkiwix.so as second argument"
+  exit 1
+fi
+TEST_SOURCE_DIR=$(dirname $(readlink -f $0))
+
+
+javac -g -d . -s . -cp $TEST_SOURCE_DIR/junit-4.13.jar:$KIWIX_LIB_JAR $TEST_SOURCE_DIR/test.java
+
+java -Djava.library.path=$KIWIX_LIB_DIR -cp $TEST_SOURCE_DIR/junit-4.13.jar:$TEST_SOURCE_DIR/hamcrest-core-1.3.jar:$KIWIX_LIB_JAR:. org.junit.runner.JUnitCore test
+

src/wrapper/java/org/kiwix/testing/test.java

@@ -0,0 +1,53 @@
+
+import java.io.*;
+import java.util.*;
+import org.junit.Test;
+import static org.junit.Assert.*;
+import org.kiwix.kiwixlib.*;
+
+public class test {
+static {
+  System.loadLibrary("kiwix");
+}
+
+private static String getCatalogContent()
+throws IOException
+{
+  BufferedReader reader = new BufferedReader(new FileReader("catalog.xml"));
+  String line;
+  StringBuilder sb = new StringBuilder();
+  while ((line = reader.readLine()) != null)
+  {
+    sb.append(line + "\n");
+  }
+  reader.close();
+  return sb.toString();
+}
+
+@Test
+public void testSome()
+throws IOException
+{
+  Library lib = new Library();
+  Manager manager = new Manager(lib);
+  String content = getCatalogContent();
+  manager.readOpds(content, "https://library.kiwix.org");
+  assertEquals(lib.getBookCount(true, true), 10);
+  String[] bookIds = lib.getBooksIds();
+  assertEquals(bookIds.length, 10);
+  Book book = lib.getBookById(bookIds[0]);
+  assertEquals(book.getTitle(), "Wikisource");
+  assertEquals(book.getTags(), "wikisource;_category:wikisource;_pictures:no;_videos:no;_details:yes;_ftindex:yes");
+  assertEquals(book.getFaviconUrl(), "https://library.kiwix.org/meta?name=favicon&content=wikisource_fr_all_nopic_2020-01");
+  assertEquals(book.getUrl(), "http://download.kiwix.org/zim/wikisource/wikisource_fr_all_nopic_2020-01.zim.meta4");
+}
+
+static
+public void main(String[] args) {
+  Library lib = new Library();
+  lib.getBookCount(true, true);
+}
+
+
+
+}