JUnit 5

Parameterised Tests
A tutorial - https://blog.codefx.org/libraries/junit-5-parameterized-tests/.
Some examples from Excel library,
static List<ExcelWriter> getTestWorkbookWriters() {
    val streaming = testWriter().isStreaming(true).build();
    val nonStreaming = testWriter().isStreaming(false).build();
​
    return Arrays.asList(streaming, nonStreaming);
}
​
@ParameterizedTest
@MethodSource("getTestWorkbookWriters")
void testSimpleWritesOfOscars(ExcelWriter writer) {
    val sheetWriter = writer.getRowDataWriter("Oscars");
​
    sheetWriter.writeRow(Arrays.asList("Name", "Year", "Movie"));
    sheetWriter.writeRow(Arrays.asList("Warner Baxter", 1929, "In Old Arizona"));
​
    ExcelSheetWriter sw = (ExcelSheetWriter) sheetWriter;
    val sheet = sw.getSheet();
    assertEquals(5, sheet.getLastRowNum() + 1); // number of rows = last row num (zero based) + 1
}
TODO: To test exceptions
JUnit parameterised tests still feel quite constrained compared to flexible ScalaTest etc. Thus for a big Java project, it might be worth looking at Groovy based Spock framework for testing.
Guava
Hamcrest
Last modified 4yr ago