How to get a test resource file?

Question

In a unit test I need to import a csv file. This is located in the resources folder, i.e. src/test/resources

Solution 1

Probably just useful if you have the file available, for example when doing unit tests - this will not load it out of a jar AFAIK.

URL url = Thread.currentThread().getContextClassLoader().getResource("mypackage/YourFile.csv");
File file = new File(url.getPath());
// where the file is in the classpath eg. <project>/src/test/resources/mypackage/YourFile.csv

Solution 2

You can access test resources using the current thread's classloader:

InputStream stream = Thread.currentThread().getContextClassLoader()
    .getResourceAsStream("YOURFILE.CSV");

Solution 3

with guava

import com.google.common.io.Resources;
URL url = Resources.getResource("YourFile.csv");

Solution 4

// assuming a file src/test/resources/some-file.csv exists:

import java.io.InputStream;
// ...
InputStream is = getClass().getClassLoader().getResourceAsStream("some-file.csv");

Solution 5

import org.apache.commons.io.FileUtils;
...
 final File dic = FileUtils.getFile("src","test", "resources", "csvFile");

since Apache Commons IO 2.1.

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