Added solution

[slaybrute]

No description provided.

[okuzan]

unify all test method names
they should end notOk
user lowercase after underscore. By underscore we separate not words, but logical components of the name - _

[okuzan]

it's generally better to write independent and isolated test methods whenever possible, as test method order dependencies can make your test suite more brittle and harder to maintain

[okuzan]

a lot of duplicated logic, extract to a private method like this

private void performTest(String fileName, String expectedReport) {
    URL resources = classLoader.getResource(fileName);
    List<String> readFromFile = fileReader.readFromFile(new File(resources.getFile()));
    List<FruitTransaction> fruitTransactions = parseService.parse(readFromFile);
    for (FruitTransaction fruitTransaction : fruitTransactions) {
        operationStrategy.get(fruitTransaction.getOperation())
            .handle(fruitTransaction.getFruit(),
            fruitTransaction.getQuantity());
    }
    String actual = reportService.generateReport();
    assertEquals(expectedReport, actual);
}

[okuzan]

move this out of the method, it's hard to read

[okuzan]

same, your method look very similar, avoid code duplication