/*
* Copyright 2010-2015 JetBrains s.r.o.
*
* 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 org.jetbrains.kotlin.serialization.jvm;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.kotlin.test.testFramework.KtUsefulTestCase;
import java.util.Random;
import static org.jetbrains.kotlin.serialization.jvm.BitEncoding.decodeBytes;
import static org.jetbrains.kotlin.serialization.jvm.BitEncoding.encodeBytes;
import static org.junit.Assert.assertArrayEquals;
public class BitEncodingTest extends KtUsefulTestCase {
private static final int[] BIG_LENGTHS = new int[]
{1000, 32000, 33000, 65000, 65534, 65535, 65536, 65537, 100000, 131074, 239017, 314159, 1000000};
private static void doTest(int randSeed, int length) throws Exception {
byte[] a = new byte[length];
new Random(randSeed).nextBytes(a);
String[] b = encodeBytes(a);
for (String string : b) {
assertStringConformsToJVMS(string);
}
byte[] c = decodeBytes(b);
String message = "Failed randSeed = " + randSeed + ", length = " + length;
assertArrayEquals(message, a, c);
String[] d = encodeBytes(c);
assertArrayEquals(message, b, d);
byte[] e = decodeBytes(d);
assertArrayEquals(message, a, e);
}
private static void assertStringConformsToJVMS(@NotNull String string) {
int effectiveLength = string.length();
for (char c : string.toCharArray()) {
if (c == 0x0) effectiveLength++;
}
assertTrue(String.format("String exceeds maximum allowed length in a class file: %d > 65535", effectiveLength),
effectiveLength <= 65535);
}
public void testEncodeDecode() throws Exception {
for (int length = 0; length <= 100; length++) {
for (int randSeed = 1; randSeed <= 100; randSeed++) {
doTest(randSeed, length);
}
}
for (int length : BIG_LENGTHS) {
for (int randSeed = 1; randSeed <= 3; randSeed++) {
doTest(randSeed, length);
}
}
}
}