toString() exception when using generated functional interfaces

[manikoske]

Describe the bug

When toString() function is called on certain data class instances generated by Fixture Monkey an exception is thrown. I guess the problem might be located in FunctionalInterfaceArbitraryIntrospector.

Your environment

• version of Fixture Monkey - 1.1.8
• version of Java/Kotlin - 1.9.25

Steps to reproduce

    data class MyData2(
        val roll : () -> Int
    )

    @Test
    @Seed(30)
    fun test() {
        val sampled = FixtureMonkeyBuilder()
            .plugin(KotlinPlugin())
            .build()
            .giveMeKotlinBuilder<MyData2>()
            .sample()

        println("sampled: $sampled")
    }

Expected behaviour

I would expect a proper toString return value

Actual behaviour

java.lang.ClassCastException: class java.lang.Integer cannot be cast to class java.lang.String (java.lang.Integer and java.lang.String are in module java.base of loader 'bootstrap')

	at jdk.proxy2/jdk.proxy2.$Proxy13.toString(Unknown Source)
	at java.base/java.lang.StringConcatHelper.stringOf(StringConcatHelper.java:467)
	at com.manikoske.guild.encounter.CharacterStateTest$MyData2.toString(CharacterStateTest.kt)
	at java.base/java.lang.StringConcatHelper.stringOf(StringConcatHelper.java:467)
	at java.base/java.lang.StringConcatHelper.simpleConcat(StringConcatHelper.java:422)
	at com.manikoske.guild.encounter.CharacterStateTest.test(CharacterStateTest.kt:32)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

[seongahjo]

@manikoske
Hi, thank you for reporting an issue.

It'll be resolved in 1.1.10.

Thank you.