TestNG: More than one @DataProvider for one @Test

Question

I'm using TestNG for Eclipse.

Is it possible to give two data providers step by step to the same test-function?

I could put both providers in one, but that is not what I want.

I need (not like in this example) to generate independently data.

@DataProvider(name = "dataSet1") public Object[][] createDataX() {     return new Object[][] { { 1, 1 }, { 2, 2 } }; }  @DataProvider(name = "dataSet2") public Object[][] createDataY() {     return new Object[][] { { 0, 0 }, { 3, 3 } }; } 

I want to give both providers to the same test. Is this possible?

@Test(dataProvider = "dataSet1") // ??? and "dataSet2" ??? public void testThisFunction(int val1, int val2) {     boolean solution = oracle(val1,val2);     assert (solution); } 

Answer 1

No, but nothing stops you from merging these two data providers into one and specifying that one as your data provider:

public Object[][] dp1() {   return new Object[][] {       new Object[] { "a", "b" },       new Object[] { "c", "d" },   }; }  public Object[][] dp2() {   return new Object[][] {       new Object[] { "e", "f" },       new Object[] { "g", "h" },   }; }  @DataProvider public Object[][] dp() {   List<Object[]> result = Lists.newArrayList();   result.addAll(Arrays.asList(dp1()));   result.addAll(Arrays.asList(dp2()));   return result.toArray(new Object[result.size()][]); }  @Test(dataProvider = "dp") public void f(String a, String b) {   System.out.println("f " + a + " " + b); } 

Answer 2

@DataProvider public Object[][] combinedDataProvider() {     // Using stream to combine the two separate data providers.     return Stream.of(dp1(), dp2())                  .flatMap(Arrays::stream)                  .toArray(Object[][]::new); }