Update the IO done in the test to read from resources / write to temp…

… folders

java/pom.xml

@@ -57,8 +57,6 @@
     </snapshotRepository>
   </distributionManagement>
   <build>
-    <sourceDirectory>src/main</sourceDirectory>
-    <testSourceDirectory>src/test</testSourceDirectory>
     <plugins>
     <plugin>
       <artifactId>maven-compiler-plugin</artifactId>

java/src/test/java/JavaTest.java

@@ -4,6 +4,8 @@
 
 import DictionaryLookup.*;
 import MyGame.Example.*;
+import com.google.common.io.ByteStreams;
+import java.nio.file.Files;
 import optional_scalars.ScalarStuff;
 import optional_scalars.OptionalByte;
 import MyGame.MonsterExtra;
@@ -33,6 +35,8 @@
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
+import org.junit.Rule;
+import org.junit.rules.TemporaryFolder;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
@@ -56,31 +60,20 @@
 @RunWith(JUnit4.class)
 public class JavaTest {
 
+    @Rule
+    public TemporaryFolder tempFolder = new TemporaryFolder();
+
     @org.junit.Test
-    public void mainTest() {
+    public void mainTest() throws IOException {
       // First, let's test reading a FlatBuffer generated by C++ code:
       // This file was generated from monsterdata_test.json
-
-      byte[] data = null;
-      File file = new File("monsterdata_test.mon");
-      RandomAccessFile f = null;
-      try {
-        f = new RandomAccessFile(file, "r");
-        data = new byte[(int)f.length()];
-        f.readFully(data);
-        f.close();
-      } catch(java.io.IOException e) {
-        System.out.println("FlatBuffers test: couldn't read file");
-        return;
-      }
+      byte[] data = ByteStreams.toByteArray(
+        JavaTest.class.getClassLoader().getResourceAsStream("monsterdata_test.mon"));
 
       // Now test it:
-
       ByteBuffer bb = ByteBuffer.wrap(data);
       TestBuffer(bb);
       TestPackUnpack(bb);
-
-      // Second, let's create a FlatBuffer from scratch in Java, and test it also.
     }
 
     @org.junit.Test
@@ -279,13 +272,14 @@ static void TestExtendedBuffer(ByteBuffer bb) {
         TestEq(ByteBuffer.wrap(inventory), monsterObject.inventoryAsByteBuffer());
     }
 
-    @org.junit.Test public void TestByteBufferFactory() {
+    @org.junit.Test public void TestByteBufferFactory() throws IOException {
+      File file = tempFolder.newFile("javatest.bin");
         final class MappedByteBufferFactory extends FlatBufferBuilder.ByteBufferFactory {
             @Override
             public ByteBuffer newByteBuffer(int capacity) {
                 ByteBuffer bb;
                 try {
-                    RandomAccessFile f = new RandomAccessFile("javatest.bin", "rw");
+                    RandomAccessFile f = new RandomAccessFile(file, "rw");
                     bb =  f.getChannel().map(FileChannel.MapMode.READ_WRITE, 0, capacity).order(ByteOrder.LITTLE_ENDIAN);
                     f.close();
                 } catch(Throwable e) {
@@ -325,7 +319,7 @@ public ByteBuffer newByteBuffer(int capacity) {
         TestEq(count, array.length);
     }
 
-    static void TestBuilderBasics(FlatBufferBuilder fbb, boolean sizePrefix) {
+    void TestBuilderBasics(FlatBufferBuilder fbb, boolean sizePrefix) {
         int[] names = {fbb.createString("Frodo"), fbb.createString("Barney"), fbb.createString("Wilma")};
         int[] off = new int[3];
         Monster.startMonster(fbb);
@@ -388,7 +382,7 @@ static void TestBuilderBasics(FlatBufferBuilder fbb, boolean sizePrefix) {
 
         try {
             String filename = "monsterdata_java_wire" + (sizePrefix ? "_sp" : "") + ".mon";
-            FileChannel fc = new FileOutputStream(filename).getChannel();
+            FileChannel fc = new FileOutputStream(tempFolder.newFile(filename)).getChannel();
             fc.write(fbb.dataBuffer().duplicate());
             fc.close();
         } catch(java.io.IOException e) {

java/src/test/java/NamespaceA

@@ -1 +1 @@
-../../../../tests/NamespaceA
+../../../../tests/namespace_test/NamespaceA

java/src/test/java/NamespaceC

@@ -1 +1 @@
-../../../../tests/NamespaceC
+../../../../tests/namespace_test/NamespaceC