baksmali/src/test/java/org/jf/baksmali/LambdaTest.java

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package org.jf.baksmali;

import com.google.common.io.ByteStreams;

import org.antlr.runtime.RecognitionException;

import org.junit.Assert;
import org.junit.Test;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;

public class LambdaTest {

    @Test
    public void testHelloWorldLambda() throws IOException, RecognitionException {
        runTest("HelloWorldLambda");
    }

    private void runTest(String fileName) throws IOException, RecognitionException {
        // Load file from resources as a stream
        String smaliFile = String.format("LambdaTest%s%s.smali", File.separatorChar, fileName);

        InputStream smaliStream = LambdaTest.class.getClassLoader().
                getResourceAsStream(smaliFile);
        if (smaliStream == null) {
            Assert.fail("Could not load " + smaliFile);
        }

        String source = readFully(smaliStream);

        // Run smali, baksmali, and then compare strings are equal (minus comments/whitespace)
        baksmaliOptions options = new baksmaliOptions();
        options.apiLevel = 23;  // since we need at least level 23 for lambda opcodes
        options.experimental = true; // since these opcodes aren't implemented in runtime yet
        BaksmaliTestUtils.assertSmaliCompiledEquals(source, source, options, true);
    }


    public static String readFully(InputStream inputStream) throws IOException {
        return readFully(inputStream, "UTF-8");
    }

    public static String readFully(InputStream inputStream, String encoding)
            throws IOException {
        return new String(ByteStreams.toByteArray(inputStream), encoding);
    }
}