var baseName = "jstests_disk_datafile_options";

load('jstests/libs/command_line/test_parsed_options.js');

jsTest.log("Testing \"noprealloc\" command line option");
var expectedResult = {
    "parsed" : {
        "storage" : {
            "mmapv1" : {
                "preallocDataFiles" : false
            }
        }
    }
};
testGetCmdLineOptsMongod({ noprealloc : "" }, expectedResult);

jsTest.log("Testing \"storage.mmapv1.preallocDataFiles\" config file option");
expectedResult = {
    "parsed" : {
        "config" : "jstests/libs/config_files/enable_prealloc.json",
        "storage" : {
            "mmapv1" : {
                "preallocDataFiles" : true
            }
        }
    }
};
testGetCmdLineOptsMongod({ config : "jstests/libs/config_files/enable_prealloc.json" },
                         expectedResult);

jsTest.log("Testing with no explicit data file option setting");
expectedResult = {
    "parsed" : {
        "storage" : { }
    }
};
testGetCmdLineOptsMongod({}, expectedResult);

// Test that we preserve switches explicitly set to false in config files.  See SERVER-13439.
jsTest.log("Testing explicitly disabled \"noprealloc\" config file option");
expectedResult = {
    "parsed" : {
        "config" : "jstests/libs/config_files/disable_noprealloc.ini",
        "storage" : {
            "mmapv1" : {
                "preallocDataFiles" : true
            }
        }
    }
};
testGetCmdLineOptsMongod({ config : "jstests/libs/config_files/disable_noprealloc.ini" },
                         expectedResult);

print(baseName + " succeeded.");