Guard coverage

method.swift

// Got this method which makes call to API, blah, blah, blah...

self.sendRequestWithMethod(.GET, endpoint: .Repositories, params: nil, query: nil, body: nil) { (response, body, error) -> () in
    guard error == nil else {
        completion(repositories: nil, error: error)
        return
    }
    
    guard let repositoriesBody = (body as? NSDictionary)?["results"] as? NSArray else {
        completion(repositories: nil, error: Error.withInfo("Wrong body \(body)"))
        return
    }
    
    let repos: [Repository] = XcodeServerArray(repositoriesBody)
    completion(repositories: repos, error: nil)
}

test.swift

// Given this test case

func testGetRepositories() {
    let expectation = self.expectationWithDescription("Get Repositories")
    let server = self.getRecordingXcodeServer("get_repositories")
    
    server.getRepositories() { (repositories, error) in
        XCTAssertNil(error, "Error should be nil")
        XCTAssertNotNil(repositories, "Repositories shouldn't be nil")
        
        if let repos = repositories {
            XCTAssertEqual(repos.count, 2, "There should be two repositories available")
            
            for (index, repo) in repos.enumerate() {
                XCTAssertEqual(repo.name, "Test\(index + 1)")
            }
            
            XCTAssertEqual(repos[0].sshAccess, Repository.SSHAccessType.LoggedInReadWrite)
            XCTAssertEqual(repos[1].writeAccessExternalIds, [ "ABCDEFAB-CDEF-ABCD-EFAB-CDEF00000050", "D024C308-CEBE-4E72-BE40-E1E4115F38F9" ])
        }
        
        expectation.fulfill()
    }
    
    self.waitForExpectationsWithTimeout(10.0, handler: nil)
}

If I run this test case I get code coverage like this:

Which is strange because setting breakpoint at let repos: [Repository] = XcodeServerArray(repositoriesBody) executes this breakpoint - so it's executed properly!

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If I change guard style to if style coverage gets marked correctly: