Added testReader unit-test for the java wrapper

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

@@ -10,10 +10,10 @@ static {
   System.loadLibrary("kiwix");
 }
 
-private static String getCatalogContent()
+private static String getFileContent(String path)
 throws IOException
 {
-  BufferedReader reader = new BufferedReader(new FileReader("catalog.xml"));
+  BufferedReader reader = new BufferedReader(new FileReader(path));
   String line;
   StringBuilder sb = new StringBuilder();
   while ((line = reader.readLine()) != null)
@@ -25,12 +25,29 @@ throws IOException
 }
 
 @Test
-public void testSome()
+public void testReader()
+throws JNIKiwixException, IOException
+{
+  JNIKiwixReader reader = new JNIKiwixReader("small.zim");
+  assertEquals("Test ZIM file", reader.getTitle());
+  assertEquals(45, reader.getFileSize()); // The file size is in KiB
+  assertEquals("A/main.html", reader.getMainPage());
+  String s = getFileContent("small_zimfile_data/main.html");
+  byte[] c = reader.getContent(new JNIKiwixString("A/main.html"),
+                                new JNIKiwixString(),
+                                new JNIKiwixString(),
+                                new JNIKiwixInt());
+  assertEquals(s, new String(c));
+
+}
+
+@Test
+public void testLibrary()
 throws IOException
 {
   Library lib = new Library();
   Manager manager = new Manager(lib);
-  String content = getCatalogContent();
+  String content = getFileContent("catalog.xml");
   manager.readOpds(content, "http://localhost");
   assertEquals(lib.getBookCount(true, true), 1);
   String[] bookIds = lib.getBooksIds();