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我正在mockk和Junit5中为FileUtility类的伴随对象中定义的静态方法编写单元测试用例。

方法如下，

class FileUtility {

    companion object {
        fun getFileObject(fileName: String): File {
            require(!StringUtils.isBlank(fileName)) { "Expecting a valid filePath" }
            val file = File(fileName)
            if (file.isHidden)
                throw llegalArgumentException()
            return file
        }
    }

}

单元测试用例如下，

@Test
fun `get file object test throws exception when file path is hidden`() {
    val filePath = "filepath"
    val file = mockk<File>()
    every { file.isHidden } returns true
    assertThrows(IllegalArgumentException::class.java) {
        getFileObject(filePath)
    }
    verify { file.isHidden}
}

出现以下错误，

Expected java.lang.Exception to be thrown, but nothing was thrown. …