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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"UTBot generates uncompilable Kotlin parametrized tests","articleBody":"**Description**\r\n\r\nWhen user tries to generate parametrized test for Kotlin code as result she gets uncompilable code\r\n\r\n**To Reproduce**\r\n\r\nSteps to reproduce the behavior:\r\n\r\n1. Invoke test generation for the code below, with enabled setting `Parametrized tests`\r\n```kotlin\r\nclass A {\r\n    fun f(a:Int, b:Int): Int {\r\n        return a + b;\r\n    }\r\n}\r\n```\r\n**Expected behavior**\r\n\r\nExecutable tests are generated\r\n\r\n**Actual behavior**\r\n\r\nTests cannot be compiled and executed.\r\n\r\n**Visual proofs (screenshots, logs, images)**\r\nResulted code and errors:\r\n\r\n![image](https://user-images.githubusercontent.com/10035839/194098201-06593c87-abe1-40b3-bc3d-c341cedfc27f.png)\r\n\r\n```kotlin\r\nclass ATest {\r\n    ///region Test suites for executable org.test.A.f\r\n    \r\n    ///region Parameterized test for method f(int, int)\r\n    \r\n    @ParameterizedTest\r\n    @MethodSource(\"org.test.ATest#provideDataForF\")\r\n    fun parameterizedTestsForF(a: A?,\r\n    a1: Int,\r\n    b: Int,\r\n    expectedResult: Int?\r\n    ) {\r\n        val actual = a.f(a1, b) // #1 error\r\n        \r\n        assertEquals(expectedResult, actual)\r\n    }\r\n    ///endregion\r\n    \r\n    ///endregion\r\n    \r\n    companion object {\r\n        ///region Data providers\r\n        \r\n        @JvmStatic\r\n        fun provideDataForF(): java.util.ArrayList // #2 error\r\n         {\r\n            val argList = java.util.ArrayList() // #3 error\r\n            \r\n            run {\r\n                val a = A()\r\n                \r\n                val testCaseObjects = kotlin.Array\u003cAny?\u003e(4) { null }\r\n                testCaseObjects[0] = a\r\n                testCaseObjects[1] = -1\r\n                testCaseObjects[2] = 1\r\n                testCaseObjects[3] = 0\r\n                argList.add(arguments(testCaseObjects))\r\n            }\r\n            \r\n            return argList\r\n        }\r\n        ///endregion\r\n    }\r\n}\r\n\r\n```","author":{"url":"https://github.com/tyuldashev","@type":"Person","name":"tyuldashev"},"datePublished":"2022-10-05T15:24:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/1104/UTBotJava/issues/1104"}