[PATCH JGit 07/19] implemented the packs file update functionality

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From: mike.gaffney <mike.gaffney@xxxxxxxxxxxxxx>

---
 .../jgit/lib/UpdateDirectoryInfoCacheTest.java     |   23 ++++++++++++++++++-
 .../spearce/jgit/lib/UpdateDirectoryInfoCache.java |   17 +++++++++-----
 2 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/UpdateDirectoryInfoCacheTest.java b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/UpdateDirectoryInfoCacheTest.java
index 11d183e..25b78c5 100644
--- a/org.spearce.jgit.test/tst/org/spearce/jgit/lib/UpdateDirectoryInfoCacheTest.java
+++ b/org.spearce.jgit.test/tst/org/spearce/jgit/lib/UpdateDirectoryInfoCacheTest.java
@@ -1,11 +1,30 @@
 package org.spearce.jgit.lib;
 
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
 import junit.framework.TestCase;
 
+import org.spearce.jgit.util.JGitTestUtil;
+
 public class UpdateDirectoryInfoCacheTest extends TestCase {
+	private static final String PACK_NAME = "pack-34be9032ac282b11fa9babdc2b2a93ca996c9c2f";
+	private static final File TEST_PACK = JGitTestUtil.getTestResourceFile(PACK_NAME + ".pack");
+	private static final File TEST_IDX = JGitTestUtil.getTestResourceFile(PACK_NAME + ".idx");
 	
-	public void testBase() throws Exception {
-		fail("nyi");
+	public void testCreatesTheFileAndPutsTheContentsIn() throws Exception {
+		List<PackFile> packs = new ArrayList<PackFile>();
+		packs.add(new PackFile(TEST_IDX, TEST_PACK));
+		
+		File packsFile = File.createTempFile(UpdateDirectoryInfoCacheTest.class.getSimpleName(), "tstdata");
+		packsFile.deleteOnExit();
+		
+		String expectedContents = new PacksFileContentsCreator(packs).toString();
+		
+		new UpdateDirectoryInfoCache(packs, packsFile).execute();
+		
+		assertEquals(expectedContents, JGitTestUtil.readFileAsString(packsFile));
 	}
 
 }
diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/UpdateDirectoryInfoCache.java b/org.spearce.jgit/src/org/spearce/jgit/lib/UpdateDirectoryInfoCache.java
index 2bceb9e..72a315a 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/lib/UpdateDirectoryInfoCache.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/UpdateDirectoryInfoCache.java
@@ -1,22 +1,27 @@
 package org.spearce.jgit.lib;
 
+import java.io.BufferedWriter;
 import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
 import java.util.List;
 
 public class UpdateDirectoryInfoCache {
 
 	private List<PackFile> packsList;
-	private File infoDirectory;
+	private File infoPacksFile;
 
 	public UpdateDirectoryInfoCache(List<PackFile> packsList,
-			File infoDirectory) {
+									File infoPacksFile) {
 		this.packsList = packsList;
-		this.infoDirectory = infoDirectory;
+		this.infoPacksFile = infoPacksFile;
 	}
 
-	public void execute() {
-//		File objectFile = objectDatabase.
-//		String packsContents = new PacksFileContentsCreator(this.objectDatabase.listLocalPacks()).toString();
+	public void execute() throws IOException {
+		String packsContents = new PacksFileContentsCreator(packsList).toString();
+		FileOutputStream fos = new FileOutputStream(infoPacksFile);
+		fos.write(packsContents.getBytes());
+		fos.close();
 	}
 
 }
-- 
1.6.4.2

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