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javaunit-testingjunitjmockit

JMockit - warning when mocking methods that expect Collections

Is there a way to get the following mock to work without an Unchecked cast warning:

new Expectations() {{
        UrlService.addUrls((List<String>)any); result = expectedCandidates; 
}};

The UrlService.addUrls() method's signature is:

static List<Candidate> addUrls(List<String> urls)
Solution

  • The best alternative is to use the T witnAny(T arg) argument matcher:

    new Expectations() {{
    UrlService.addUrls(withAny(new ArrayList<String>()));
    result = expectedCandidates;
}};

    Or, to disable the code inspection locally, if your IDE supports it. With IntelliJ, I can write:

    new Expectations() {{
    //noinspection unchecked
    UrlService.addUrls((List<String>) any);
    result = expectedCandidates;
}};

    ... which really is OK. Code inspections are good and all, but there are always exceptional situations where it's fine to disable them.