Adrian Matei for Codever

Posted on Jan 11, 2022 • Updated on Jan 10, 2023 • Originally published at codever.dev

How to read file from test resources in java unit test

#java #testing #codever #snippets

Use the getClass().getClassLoader().getResourceAsStream() to get an InputStream for the wanted resource. In the following snippet we access the bookmark-example.xml file resource, which is placed directly in the src/test/resources folder:

@Test
void shouldUnmarshallXmlToJava() throws JAXBException {
    JAXBContext jaxbContext = JAXBContext.newInstance("dev.codepal.bookmark");
    final var jaxbUnmarshaller = jaxbContext.createUnmarshaller();

    InputStream inStream = getClass().getClassLoader().getResourceAsStream(
            "bookmark-example.xml");

    JAXBElement<Bookmark> o = (JAXBElement<Bookmark>)jaxbUnmarshaller.unmarshal(inStream);
    Bookmark bookmark = o.getValue();
    assertThat(bookmark.getTitle(), equalTo("CodepediaOrg"));
}