Add test for protocol v0 parser

ProtocolV2Parser has unit tests but protocol v0/v1 is not covered.

Change-Id: I96022e8f8eb60d4da748d1042474fd1efd67e882
Signed-off-by: Ivan Frade <ifrade@google.com>

1 files changed, 199 insertions, 0 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV0ParserTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV0ParserTest.java
new file mode 100644
index 0000000000..2c98c84ae5
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV0ParserTest.java
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2018, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.transport;
+
+import static org.eclipse.jgit.transport.ObjectIdMatcher.hasOnlyObjectIds;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import org.eclipse.jgit.errors.PackProtocolException;
+import org.eclipse.jgit.lib.Config;
+import org.junit.Test;
+
+public class ProtocolV0ParserTest {
+	/*
+	 * Convert the input lines to the PacketLine that the parser reads.
+	 */
+	private static PacketLineIn formatAsPacketLine(String... inputLines)
+			throws IOException {
+		ByteArrayOutputStream send = new ByteArrayOutputStream();
+		PacketLineOut pckOut = new PacketLineOut(send);
+		for (String line : inputLines) {
+			if (line == PacketLineIn.END) {
+				pckOut.end();
+			} else if (line == PacketLineIn.DELIM) {
+				pckOut.writeDelim();
+			} else {
+				pckOut.writeString(line);
+			}
+		}
+
+		return new PacketLineIn(new ByteArrayInputStream(send.toByteArray()));
+	}
+
+	private static TransferConfig defaultConfig() {
+		Config rc = new Config();
+		rc.setBoolean("uploadpack", null, "allowfilter", true);
+		return new TransferConfig(rc);
+	}
+
+	@Test
+	public void testRecvWantsWithCapabilities()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				String.join(" ", "want",
+						"4624442d68ee402a94364191085b77137618633e", "thin-pack",
+						"no-progress", "include-tag", "ofs-delta", "\n"),
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities()
+				.contains(GitProtocolConstants.OPTION_THIN_PACK));
+		assertTrue(request.getClientCapabilities()
+				.contains(GitProtocolConstants.OPTION_NO_PROGRESS));
+		assertTrue(request.getClientCapabilities()
+				.contains(GitProtocolConstants.OPTION_INCLUDE_TAG));
+		assertTrue(request.getClientCapabilities()
+				.contains(GitProtocolConstants.CAPABILITY_OFS_DELTA));
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+	}
+
+	@Test
+	public void testRecvWantsWithAgent()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				String.join(" ", "want",
+						"4624442d68ee402a94364191085b77137618633e", "thin-pack",
+						"agent=JGit.test/0.0.1", "\n"),
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities()
+				.contains(GitProtocolConstants.OPTION_THIN_PACK));
+		assertEquals(1, request.getClientCapabilities().size());
+		assertEquals("JGit.test/0.0.1", request.getAgent());
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+	}
+
+	/*
+	 * First round of protocol v0 negotiation. Client send wants, no
+	 * capabilities.
+	 */
+	@Test
+	public void testRecvWantsWithoutCapabilities()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				"want 4624442d68ee402a94364191085b77137618633e\n",
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities().isEmpty());
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+	}
+
+	@Test
+	public void testRecvWantsDeepen()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				"want 4624442d68ee402a94364191085b77137618633e\n",
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n", "deepen 3\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities().isEmpty());
+		assertEquals(3, request.getDepth());
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+	}
+
+	@Test
+	public void testRecvWantsShallow()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				"want 4624442d68ee402a94364191085b77137618633e\n",
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n",
+				"shallow 4b643d0ef739a1b494e7d6926d8d8ed80d35edf4\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities().isEmpty());
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+		assertThat(request.getClientShallowCommits(),
+				hasOnlyObjectIds("4b643d0ef739a1b494e7d6926d8d8ed80d35edf4"));
+	}
+
+	@Test
+	public void testRecvWantsFilter()
+			throws PackProtocolException, IOException {
+		PacketLineIn pckIn = formatAsPacketLine(
+				"want 4624442d68ee402a94364191085b77137618633e\n",
+				"want f900c8326a43303685c46b279b9f70411bff1a4b\n",
+				"filter blob:limit=13000\n",
+				PacketLineIn.END);
+		ProtocolV0Parser parser = new ProtocolV0Parser(defaultConfig());
+		FetchV0Request request = parser.recvWants(pckIn);
+		assertTrue(request.getClientCapabilities().isEmpty());
+		assertThat(request.getWantIds(),
+				hasOnlyObjectIds("4624442d68ee402a94364191085b77137618633e",
+						"f900c8326a43303685c46b279b9f70411bff1a4b"));
+		assertEquals(13000, request.getFilterBlobLimit());
+	}
+
+}