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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"HashMap with Enum as key - test generation fails","articleBody":"**Description**\r\n\r\nTest generation fails for a method with HashMap using Enum as key.\r\n\r\n**To Reproduce**\r\n\r\nSteps to reproduce the behavior:\r\n\r\n1. IntelliJ IDEA with UTBotJava plugin installed\r\n2. A project with JDK 8/11 is opened\r\n3. Add the following class:\r\n\r\n```\r\npublic class MapWithEnum {\r\n\r\n    public void createMapWithEnum() {\r\n        Map\u003cWorkDays, Integer\u003e map = new HashMap\u003c\u003e();\r\n        map.put(WorkDays.Monday, 112);\r\n        map.put(WorkDays.Tuesday, 354);\r\n        map.put(WorkDays.Friday, 567);\r\n        map.remove(WorkDays.Tuesday);\r\n    }\r\n\r\n    public enum WorkDays {\r\n        Monday,\r\n        Tuesday,\r\n        Wednesday,\r\n        Thursday,\r\n        Friday\r\n    }\r\n}\r\n```\r\n\r\n4. Run Generating tests with UTBot... for this class\r\n\r\n**Expected behavior**\r\n\r\nTests are supposed to be generated.\r\n\r\n**Actual behavior**\r\n\r\n\"Failed to generate unit tests for class MapWithEnum\" error popup is shown in IDEA.\r\nIt is shown immediately after test generation is started.\r\nMap.remove() method is crucial for the issue - without it generation passes.\r\n\r\n**Visual proofs (screenshots, logs, images)**\r\n\r\n![Map with Enum as key](https://user-images.githubusercontent.com/37301492/177525277-a241464d-c2cf-4f0c-abee-58c429887836.jpg)\r\n\r\n**Environment**\r\n\r\nWindows 10 Pro\r\nIntelliJ IDEA 2022.1.3\r\nchecked on JDK 8 and 11, Gradle, Maven projects - same error\r\n\r\n**Additional context**\r\n\r\nAdding some input parameters to the method helps - fuzzer is generating tests.\r\n\r\nMap.remove() method is crucial for the issue - without it generation passes.\r\n\r\nMap with Enum as values - test generation passes.","author":{"url":"https://github.com/alisevych","@type":"Person","name":"alisevych"},"datePublished":"2022-07-06T10:17:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/436/UTBotJava/issues/436"}