| // Copyright 2015 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package com.google.devtools.build.android.ziputils; |
| |
| import static com.google.common.truth.Truth.assertWithMessage; |
| import static com.google.devtools.build.android.ziputils.DirectoryEntry.CENTIM; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link CentralDirectory}. */ |
| @RunWith(JUnit4.class) |
| public class CentralDirectoryTest { |
| |
| /** |
| * Test of viewOf method, of class CentralDirectory. |
| */ |
| @Test |
| public void testViewOf() { |
| ByteBuffer buffer = ByteBuffer.allocate(100).order(ByteOrder.LITTLE_ENDIAN); |
| for (int i = 0; i < 100; i++) { |
| buffer.put((byte) i); |
| } |
| buffer.position(20); |
| buffer.limit(90); |
| CentralDirectory view = CentralDirectory.viewOf(buffer); |
| int expPos = 0; |
| int expLimit = 90; |
| // expect the buffer to have been reset to 0 (CentralDirectory does NOT slice). |
| assertWithMessage("View not at position 0").that(view.buffer.position()).isEqualTo(expPos); |
| assertWithMessage("Buffer not at position 0").that(buffer.position()).isEqualTo(expPos); |
| assertWithMessage("Buffer limit changed").that(view.buffer.limit()).isEqualTo(expLimit); |
| assertWithMessage("Buffer limit changed").that(buffer.limit()).isEqualTo(expLimit); |
| } |
| |
| /** |
| * Test of parse method, of class CentralDirectory. |
| */ |
| @Test |
| public void testParse() { |
| // First fill it with some entries |
| ByteBuffer inputBuffer = ByteBuffer.allocate(10000).order(ByteOrder.LITTLE_ENDIAN); |
| String comment = null; |
| byte[] extra = null; |
| String filename = "pkg/0.txt"; |
| DirectoryEntry entry = DirectoryEntry.view(inputBuffer, filename, extra , comment); |
| int expSize = entry.getSize(); |
| comment = ""; |
| extra = new byte[]{}; |
| for (int i = 1; i < 20; i++) { |
| filename = "pkg/" + i + ".txt"; |
| entry = DirectoryEntry.view(inputBuffer, filename, extra , comment); |
| expSize += entry.getSize(); |
| extra = new byte[extra.length + 1]; |
| comment = comment + "," + i; |
| } |
| // Parse the entries. |
| CentralDirectory cdir = CentralDirectory.viewOf(inputBuffer).at(0).parse(); |
| assertWithMessage("Count").that(cdir.getCount()).isEqualTo(20); |
| assertWithMessage("Position after parse").that(cdir.buffer.position()).isEqualTo(expSize); |
| assertWithMessage("Limit after parse").that(cdir.buffer.limit()).isEqualTo(10000); |
| cdir.buffer.flip(); |
| assertWithMessage("Position after finish").that(cdir.buffer.position()).isEqualTo(0); |
| assertWithMessage("Limit after finish").that(cdir.buffer.limit()).isEqualTo(expSize); |
| } |
| |
| /** |
| * Test of nextEntry method, of class CentralDirectory. |
| */ |
| @Test |
| public void testNextEntry() { |
| ByteBuffer outputBuffer = ByteBuffer.allocate(10000).order(ByteOrder.LITTLE_ENDIAN); |
| CentralDirectory cdir = CentralDirectory.viewOf(outputBuffer); |
| String comment = null; |
| byte[] extra = null; |
| String filename = "pkg/0.txt"; |
| DirectoryEntry entry = DirectoryEntry.allocate(filename, extra , comment); |
| cdir.nextEntry(entry).set(CENTIM, 0); |
| int expSize = entry.getSize(); |
| comment = ""; |
| extra = new byte[]{}; |
| for (int i = 1; i < 20; i++) { |
| filename = "pkg/" + i + ".txt"; |
| entry = DirectoryEntry.allocate(filename, extra , comment); |
| cdir.nextEntry(entry).set(CENTIM, 0); |
| int size = entry.getSize(); |
| expSize += size; |
| extra = new byte[extra.length + 1]; |
| comment = comment + "," + i; |
| } |
| assertWithMessage("Count").that(cdir.getCount()).isEqualTo(20); |
| assertWithMessage("Position after build").that(cdir.buffer.position()).isEqualTo(expSize); |
| assertWithMessage("Limit after build").that(cdir.buffer.limit()).isEqualTo(10000); |
| cdir.buffer.flip(); |
| assertWithMessage("Position after finish build").that(cdir.buffer.position()).isEqualTo(0); |
| assertWithMessage("Limit after finish build").that(cdir.buffer.limit()).isEqualTo(expSize); |
| |
| // now try to parse the directory we just created. |
| cdir.at(0).parse(); |
| assertWithMessage("Count").that(cdir.getCount()).isEqualTo(20); |
| assertWithMessage("Position after re-parse").that(cdir.buffer.position()).isEqualTo(expSize); |
| assertWithMessage("Limit after re-parse").that(cdir.buffer.limit()).isEqualTo(expSize); |
| cdir.buffer.flip(); |
| assertWithMessage("Position after finish parse").that(cdir.buffer.position()).isEqualTo(0); |
| assertWithMessage("Limit after finish parse").that(cdir.buffer.limit()).isEqualTo(expSize); |
| } |
| } |