| /* |
| * Copyright 2015, Google Inc. |
| * 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 Google 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.jf.baksmali; |
| |
| import com.google.common.io.ByteStreams; |
| import org.antlr.runtime.RecognitionException; |
| import org.junit.Assert; |
| |
| import javax.annotation.Nonnull; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * A base test class for performing a roundtrip assembly/disassembly |
| * |
| * The test accepts a smali file as input, performs a smali -> dex -> smali roundtrip, and |
| * verifies that the result equals a known-good output smali file. |
| * |
| * By default, the input and output files should be resources at [testDir]/[testName]Input.smali |
| * and [testDir]/[testName]Output.smali respectively |
| */ |
| public abstract class RoundtripTest { |
| protected final String testDir; |
| |
| protected RoundtripTest(@Nonnull String testDir) { |
| this.testDir = testDir; |
| } |
| |
| protected RoundtripTest() { |
| this.testDir = this.getClass().getSimpleName(); |
| } |
| |
| @Nonnull |
| protected String getInputFilename(@Nonnull String testName) { |
| return String.format("%s%s%sInput.smali", testDir, File.separatorChar, testName); |
| } |
| |
| @Nonnull |
| protected String getOutputFilename(@Nonnull String testName) { |
| return String.format("%s%s%sOutput.smali", testDir, File.separatorChar, testName); |
| } |
| |
| protected void runTest(@Nonnull String testName, @Nonnull baksmaliOptions options) |
| throws IOException, RecognitionException { |
| // Load file from resources as a stream |
| String inputFilename = getInputFilename(testName); |
| String input = readResourceFully(getInputFilename(testName)); |
| String output; |
| if (getOutputFilename(testName).equals(inputFilename)) { |
| output = input; |
| } else { |
| output = readResourceFully(getOutputFilename(testName)); |
| } |
| |
| // Run smali, baksmali, and then compare strings are equal (minus comments/whitespace) |
| BaksmaliTestUtils.assertSmaliCompiledEquals(input, output, options, true); |
| } |
| |
| @Nonnull |
| public static String readResourceFully(@Nonnull String fileName) throws IOException { |
| return readResourceFully(fileName, "UTF-8"); |
| } |
| |
| @Nonnull |
| public static String readResourceFully(@Nonnull String fileName, @Nonnull String encoding) |
| throws IOException { |
| InputStream smaliStream = RoundtripTest.class.getClassLoader(). |
| getResourceAsStream(fileName); |
| if (smaliStream == null) { |
| Assert.fail("Could not load " + fileName); |
| } |
| |
| return new String(ByteStreams.toByteArray(smaliStream), encoding); |
| } |
| } |