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// Copyright 2021 Code Intelligence GmbH
//
// 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.code_intelligence.jazzer.instrumentor
import java.io.FileOutputStream
object PatchTestUtils {
@JvmStatic
fun classToBytecode(targetClass: Class<*>): ByteArray {
return ClassLoader
.getSystemClassLoader()
.getResourceAsStream("${targetClass.name.replace('.', '/')}.class")!!
.use {
it.readBytes()
}
}
@JvmStatic
fun bytecodeToClass(name: String, bytecode: ByteArray): Class<*> {
return BytecodeClassLoader(name, bytecode).loadClass(name)
}
@JvmStatic
public fun dumpBytecode(outDir: String, name: String, originalBytecode: ByteArray) {
FileOutputStream("$outDir/$name.class").use { fos -> fos.write(originalBytecode) }
}
/**
* A ClassLoader that dynamically loads a single specified class from byte code and delegates all other class loads to
* its own ClassLoader.
*/
class BytecodeClassLoader(val className: String, private val classBytecode: ByteArray) :
ClassLoader(BytecodeClassLoader::class.java.classLoader) {
override fun loadClass(name: String): Class<*> {
if (name != className)
return super.loadClass(name)
return defineClass(className, classBytecode, 0, classBytecode.size)
}
}
}
fun assertSelfCheck(target: DynamicTestContract, shouldPass: Boolean = true) {
val results = target.selfCheck()
for ((test, passed) in results) {
if (shouldPass) {
assert(passed) { "$test should pass" }
} else {
assert(!passed) { "$test should not pass" }
}
}
}
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