Sandboxed test is not compiling because of illegal unicode escape

[alisevych]

Description

Sandboxed test is not compiling because commented stack trace contains "illegal unicode escape".

To Reproduce

1. Run a project in IntelliJ Idea 2022.1.3 - 2022.2.2
2. Install RC plugin build
3. Set Fuzzing to 100% (in File -> Settings -> Tools -> UnitTestBot)
4. Add the following class (originally posted in Add SecurityManager support to block suspicious code #622 #625 ):

public class SecurityCheck {

    public int normalTest(int value) {
        if (value < 0) {
            return -value;
        }
        return value;
    }

    public int read(File path) throws IOException {
        byte[] bytes = Files.readAllBytes(path.toPath());
        return bytes.length;
    }

    public int connect(Socket socket) throws IOException {
        socket.connect(new InetSocketAddress("0.0.0.0", 22));
        return 0;
    }

    public String property(String key) {
        return System.getProperty(key);
    }

    public String systemExit() {
        System.exit(0);
        return "bad";
    }

}

6. Generate tests with UnitTestBot
7. Open generated tests

Expected behavior

Project can be successfully build after test generation.

Actual behavior

SecurityCheckTest is not compiled.
The following error is displayed:

C:\Users\<user_name>\UTBotJava\utbot-sample\src\test\java\org\utbot\examples\securitycheck\SecurityCheckTest.java:2823: error: illegal unicode escape
        /* This test fails because method [org.utbot.examples.securitycheck.SecurityCheck.read] produces [java.security.AccessControlException: access denied ("java.io.FilePermission" "jkmqh\uhauh" "read")]

Visual proofs (screenshots, logs, images)

There is the following test generated by Fuzzer

    ///region FUZZER: EXPLICITLY_THROWN_UNCHECKED_EXCEPTIONS for method read(java.io.File)

    @Test
    @DisplayName("read: path = File(String, String)")
    @Disabled(value = "Disabled due to sandbox")
    public void testRead() {
        SecurityCheck securityCheck = new SecurityCheck();
        File path = new File("jkmqh", "uhauh");
        
        /* This test fails because method [org.utbot.examples.securitycheck.SecurityCheck.read] produces [java.security.AccessControlException: access denied ("java.io.FilePermission" "jkmqh\uhauh" "read")]
            java.base/java.security.AccessControlContext.checkPermission(AccessControlContext.java:472)
            java.base/java.security.AccessController.checkPermission(AccessController.java:897)
            java.base/java.lang.SecurityManager.checkPermission(SecurityManager.java:322)
            java.base/java.lang.SecurityManager.checkRead(SecurityManager.java:661)
            java.base/sun.nio.fs.WindowsChannelFactory.open(WindowsChannelFactory.java:299)
            java.base/sun.nio.fs.WindowsChannelFactory.newFileChannel(WindowsChannelFactory.java:168)
            java.base/sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:230)
            java.base/java.nio.file.Files.newByteChannel(Files.java:371)
            java.base/java.nio.file.Files.newByteChannel(Files.java:422)
            java.base/java.nio.file.Files.readAllBytes(Files.java:3206)
            org.utbot.examples.securitycheck.SecurityCheck.read(SecurityCheck.java:19) */
    }
    ///endregion

Environment

Windows 10 Pro
IntelliJ IDEA 2022.2.2

Additional context

Originally posted by @alisevych in #1125 (comment)

[Markoutte]

Looks like that it is relative to #609

Reproducable for a simple example without sandboxing (fuzzer is on, test should fail):

public int error() {
    Integer.parseInt("my" + "\\" + "union");
    return -1;
}

@Vassiliy-Kudryashov could you please take a look?