Date relative to current in the DBUnit dataset

问题:

I'm wondering if there is any way to specify for example tomorrow as date in the DBUnit XML dataset. Sometimes code logic is different for dates in future and dates in the past and I want to test both cases. For sure I can specify something like the 5th of November 2239 and be sure that test will work till this date but are there more elegant way.

I haven't yet faced such situation during my Java development but once I had experience when code logic was different for one day before dates, two days before dates and more than two days before dates. In this case the only possible solution to write database driven test is to insert relative dates during data import.

Are there any facilities provided by the DBUnit for this?

回答1:

I just started using DBUnit and was looking for similar capabilities. Unfortunately there doesn't seem to be an expression language for dates in the framework. However, I did find a suitable workaround using DBUnit's ReplacementDataSet class. This class takes an IDataSet object and exposes methods to replace objects extracted by the IDataSet object from the data set files.

dataset

<dataset>
    <user first_name="Dan"
          last_name="Smith"
          create_date="[create_date]"/>
<dataset>

source code

String dataSetFile = "testDataFile.xml";
IDataSet dataSet = new FlatXmlDataSetBuilder().build(new FileInputStream(dataSetFile));
ReplacementDataSet rDataSet = new ReplacementDataSet(dataSet);
Set<String> keys = dataSetAdjustments.keySet();
rDataSet.addReplacementObject("[create_date]", DateUtils.addDays(new Date(), -2));

Now, when the test runs the user's creation data will always be set to two days before the test was run.

Hope this helps. Good luck.

回答2:

You can use add() of Calendar to define dates in the future and using this in relationship with datasource for JUnit. I doubt that this would work with DBUnit's XML format. May be you create your own TestCase which extends from DBTestCase and implement getDataSet() method.