No assert in test for method which returns Exception object

[tyuldashev]

Description

Some tests don't contain any assertions, even though we could try to compare returned Exception object.

To Reproduce

Steps to reproduce the behavior:

1. Use UTBot Java project to reproduce.
2. Invoke test generation for org.utbot.examples.exceptions.ExceptionExamples#createException method
3. Open the generated test

Expected behavior

Tests are supposed to have assertions.

Actual behavior

Generated test has no assertion.

Visual proofs (screenshots, logs, images)

    @Test
    @DisplayName("createException: StringBuilderAppend -> return new IllegalArgumentException(\"Here we are: \" + Math.sqrt(10))")
    public void testCreateException_StringBuilderToString() throws Exception {
        ExceptionExamples exceptionExamples = new ExceptionExamples();

        IllegalArgumentException actual = exceptionExamples.createException();

        IllegalArgumentException expected = ((IllegalArgumentException) createInstance("java.lang.IllegalArgumentException"));
    }

Additional context

IllegalArgumentException in user code has a message, so it least we could compare that text with generated one.