String concatenation: dynamicinvoke is not implemented - JDK 11

[alisevych]

Description

Concatenation of Strings - with "+" operator - with JDK 11. Test generation reports an error in test file:
dynamicinvoke is not implemented "makeConcatWithConstants"

To Reproduce

Steps to reproduce the behavior:

1. Open IntelliJ IDEA
2. Plugin is installed
3. A Maven/Gradle/Idea project with JDK 11 is opened
4. Add a class using concatenation of Strings (with one stored in a variable) like:

public class StringExample {
    public void output() {
        String example = "Some text";
        System.out.println("Plus " + example);
    }
}

Expected behavior

Tests are supposed to be generated.

Actual behavior

The following test class is generated:

public class StringExampleTest {
    ///region Test suites for executable org.example.StringExample.output


    ///region Errors report for output

    public void testOutput_errors() {
        // Couldn't generate some tests. List of errors:
        // 
        // 1 occurrences of:
        /* An operation is not implemented: dynamicinvoke "makeConcatWithConstants" <java.lang.String (java.lang.String)>("Some text")
        <java.lang.invoke.StringConcatFactory: java.lang.invoke.CallSite makeConcatWithConstants(java.lang.invoke.MethodHandles$Lookup,java.lang.String,java.lang.invoke.MethodType,java.lang.String,java.lang.Object[])>("Plus \u0001") */

    }
    ///endregion

    ///endregion

}

Environment

Windows 10 Pro
IntelliJ IDEA 2022.1.3
JDK 11
UTBotJava plugin version

[dtim]

Related to #386