Move T0007_Index to exttst

This test depends upon the external git binary, and this isn't
really a pure Java test like our module tries to claim itself is.
So we move it out to exttst with other tests that require additional
external resources and/or executable code.

Change-Id: Ic9be0280c8bb50a5768336c64de794eb0a492b3d
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

org.eclipse.jgit.test/exttst/org/eclipse/jgit/lib/T0007_GitIndexTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2008, Robin Rosenberg <robin.rosenberg@dewire.com>
+ * Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
  * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
  * and other copyright owners as documented in the project's IP log.
  *
@@ -45,16 +45,16 @@
 package org.eclipse.jgit.lib;
 
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
+import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
 import org.eclipse.jgit.lib.GitIndex.Entry;
 import org.eclipse.jgit.util.FS;
 
-public class T0007_Index extends RepositoryTestCase {
+public class T0007_GitIndexTest extends LocalDiskRepositoryTestCase {
 
 	static boolean canrungitstatus;
 	static {
@@ -108,6 +108,17 @@ public class T0007_Index extends RepositoryTestCase {
 		}
 	}
 
+	private Repository db;
+
+	private File trash;
+
+	@Override
+	protected void setUp() throws Exception {
+		super.setUp();
+		db = createWorkRepository();
+		trash = db.getWorkDir();
+	}
+
 	public void testCreateEmptyIndex() throws Exception {
 		GitIndex index = new GitIndex(db);
 		index.write();
@@ -317,9 +328,9 @@ public class T0007_Index extends RepositoryTestCase {
 				"c696abc3ab8e091c665f49d00eb8919690b3aec3")));
 
 		index2.checkout(trash);
-		assertEquals("data:a/b", content(aslashb));
-		assertEquals("data:a:b", content(acolonb));
-		assertEquals("data:a.b", content(adotb));
+		assertEquals("data:a/b", read(aslashb));
+		assertEquals("data:a:b", read(acolonb));
+		assertEquals("data:a.b", read(adotb));
 
 		if (canrungitstatus)
 			assertEquals(0, system(trash, "git status"));
@@ -436,20 +447,14 @@ public class T0007_Index extends RepositoryTestCase {
 		}
 	}
 
-	private String content(File f) throws IOException {
-		byte[] buf = new byte[(int) f.length()];
-		FileInputStream is = new FileInputStream(f);
-		try {
-			int read = is.read(buf);
-			assertEquals(f.length(), read);
-			return new String(buf, 0);
-		} finally {
-			is.close();
-		}
-	}
-
 	private void delete(File f) throws IOException {
 		if (!f.delete())
 			throw new IOException("Failed to delete f");
 	}
+
+	private File writeTrashFile(String name, String body) throws IOException {
+		final File path = new File(trash, name);
+		write(path, body);
+		return path;
+	}
 }