Add the beginnings of a Dart wrapper for libarchive.

utils/tests/archive/reader_test.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#library('reader_test');
+
+#import('dart:io');
+#import('../../../lib/unittest/unittest.dart');
+#import('../../archive/archive.dart');
+
+final String dataPath = "utils/tests/archive/data";
+
+main() {
+  test('reading a .tar.gz file', () {
+    var asyncDone = expectAsync0(() {});
+
+    var reader = new ArchiveReader();
+    reader.format.tar = true;
+    reader.filter.gzip = true;
+
+    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
+      .transform((input) {
+      var log = <String>[];
+      input.onEntry = (entry) => guardAsync(() {
+        log.add("Entry: ${entry.pathname}");
+        var stream = new StringInputStream(entry.openInputStream());
+        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
+        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
+      });
+      input.onError = registerException;
+
+      input.onClosed = () => guardAsync(() {
+        expect(log, orderedEquals([
+          "Entry: filename1",
+          "Contents: contents 1",
+          "Closed: filename1",
+
+          "Entry: filename2",
+          "Contents: contents 2",
+          "Closed: filename2",
+
+          "Entry: filename3",
+          "Contents: contents 3",
+          "Closed: filename3",
+        ]));
+      }, asyncDone);
+    });
+
+    expect(future, completes);
+  });
+
+  test('reading an in-memory .tar.gz', () {
+    var asyncDone = expectAsync0(() {});
+
+    var reader = new ArchiveReader();
+    reader.format.tar = true;
+    reader.filter.gzip = true;
+
+    var future = new File("$dataPath/test-archive.tar.gz").readAsBytes()
+      .chain((bytes) => reader.openData(bytes))
+      .transform((input) {
+      var log = <String>[];
+      input.onEntry = (entry) => guardAsync(() {
+        log.add("Entry: ${entry.pathname}");
+        var stream = new StringInputStream(entry.openInputStream());
+        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
+        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
+      });
+      input.onError = registerException;
+
+      input.onClosed = () => guardAsync(() {
+        expect(log, orderedEquals([
+          "Entry: filename1",
+          "Contents: contents 1",
+          "Closed: filename1",
+
+          "Entry: filename2",
+          "Contents: contents 2",
+          "Closed: filename2",
+
+          "Entry: filename3",
+          "Contents: contents 3",
+          "Closed: filename3",
+        ]));
+      }, asyncDone);
+    });
+
+    expect(future, completes);
+  });
+
+  test("closing entries before they're read", () {
+    var asyncDone = expectAsync0(() {});
+
+    var reader = new ArchiveReader();
+    reader.format.tar = true;
+    reader.filter.gzip = true;
+
+    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
+      .transform((input) {
+      var log = <String>[];
+      input.onEntry = (entry) => guardAsync(() {
+        log.add("Entry: ${entry.pathname}");
+        var underlyingStream = entry.openInputStream();
+        var stream = new StringInputStream(underlyingStream);
+        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
+        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
+        underlyingStream.close();
+      });
+      input.onError = registerException;
+
+      input.onClosed = () => guardAsync(() {
+        expect(log, orderedEquals([
+          "Entry: filename1",
+          "Closed: filename1",
+
+          "Entry: filename2",
+          "Closed: filename2",
+
+          "Entry: filename3",
+          "Closed: filename3",
+        ]));
+      }, asyncDone);
+    });
+
+    expect(future, completes);
+  });
+
+  test("closing an archive stream before it's finished", () {
+    var asyncDone = expectAsync0(() {});
+
+    var reader = new ArchiveReader();
+    reader.format.tar = true;
+    reader.filter.gzip = true;
+
+    var future = reader.openFilename("$dataPath/test-archive.tar.gz")
+      .transform((input) {
+      var count = 0;
+
+      var log = <String>[];
+      input.onEntry = (entry) => guardAsync(() {
+        count += 1;
+
+        log.add("Entry: ${entry.pathname}");
+        var underlyingStream = entry.openInputStream();
+        var stream = new StringInputStream(underlyingStream);
+        stream.onData = () => log.add("Contents: ${stream.read().trim()}");
+        stream.onClosed = () => log.add("Closed: ${entry.pathname}");
+
+        if (count == 2) {
+          input.close();
+          expect(input.closed);
+        }
+      });
+      input.onError = registerException;
+
+      input.onClosed = () {
+        expect(log, orderedEquals([
+          "Entry: filename1",
+          "Contents: contents 1",
+          "Closed: filename1",
+
+          "Entry: filename2",
+          "Closed: filename2",
+        ]));
+        asyncDone();
+      };
+    });
+
+    expect(future, completes);
+  });
+
+  test("opening a non-existent archive", () {
+    var reader = new ArchiveReader();
+    reader.format.tar = true;
+    reader.filter.gzip = true;
+
+    expect(reader.openFilename("$dataPath/non-existent.tar.gz"),
+      throwsA((e) => e is ArchiveException));
+  });
+}
+