Change zero-byte-file tests so they test the correct behavior.

* The empty test file needs to be STORED in the testapp, so put it on
  the initial doNotCompress list.
* It needs to have a file extension that matches the NO_COMPRESS_PATTERN.
* assertNotSame tests for object equality, which doesn't work for String
  comparisons.

brut.apktool/apktool-lib/src/test/java/brut/androlib/aapt1/BuildAndDecodeTest.java

@@ -493,11 +493,11 @@ public class BuildAndDecodeTest extends BaseTest {
     }
 
     @Test
-    public void confirmZeroByteFileIsNotStored() throws BrutException {
+    public void confirmZeroByteFileExtensionIsNotStored() throws BrutException {
         MetaInfo metaInfo = new Androlib().readMetaFile(sTestNewDir);
 
         for (String item : metaInfo.doNotCompress) {
-            assertNotSame(item, "empty");
+            assertFalse(item.equals("jpg"));
         }
     }
 

brut.apktool/apktool-lib/src/test/java/brut/androlib/aapt2/BuildAndDecodeTest.java

@@ -80,7 +80,7 @@ public class BuildAndDecodeTest extends BaseTest {
     }
 
     @Test
-    public void confirmZeroByteFileIsNotStored() throws BrutException {
+    public void confirmZeroByteFileExtensionIsNotStored() throws BrutException {
         MetaInfo metaInfo = new Androlib().readMetaFile(sTestNewDir);
         assertNull(metaInfo.doNotCompress);
     }

brut.apktool/apktool-lib/src/test/resources/aapt1/testapp/apktool.yml

@@ -11,6 +11,7 @@ versionInfo:
   versionName: '1.0'
 compressionType: false
 doNotCompress:
+- assets/0byte_file.jpg
 - arsc
 - png
 - mp3

brut.apktool/apktool-lib/src/test/resources/aapt2/testapp/apktool.yml

@@ -10,4 +10,6 @@ versionInfo:
   versionCode: '1'
   versionName: '1.0'
 compressionType: false
+doNotCompress:
+- assets/0byte_file.jpg
 sparseResources: false