OAK-11403: Remove usage of Guava io.ByteSource

Author: reschke

oak-blob-plugins/src/test/java/org/apache/jackrabbit/oak/plugins/blob/CompositeDataStoreCacheTest.java

@@ -19,6 +19,7 @@
 package org.apache.jackrabbit.oak.plugins.blob;
 
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.concurrent.CountDownLatch;
@@ -570,7 +571,7 @@ public void concurrentAddGet() throws Exception {
         // Get a handle to the file and open stream
         File fileOnUpload = cache.getIfPresent(ID_PREFIX + 0);
         assertNotNull(fileOnUpload);
-        final InputStream fStream = Files.asByteSource(fileOnUpload).openStream();
+        final InputStream fStream = new FileInputStream(fileOnUpload);
 
         thread1Start.countDown();
 

oak-blob-plugins/src/test/java/org/apache/jackrabbit/oak/plugins/blob/UploadStagingCacheTest.java

@@ -20,6 +20,7 @@
 
 import java.io.BufferedWriter;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStream;
@@ -502,7 +503,7 @@ public void testConcurrentGetDelete() throws Exception {
 
         // Get a handle to the file and open stream
         File file = stagingCache.getIfPresent(ID_PREFIX + 0);
-        final InputStream fStream = Files.asByteSource(file).openStream();
+        final InputStream fStream = new FileInputStream(file);
 
         // task to copy the steam to a file simulating read from the stream
         File temp = folder.newFile();