Merging more than one data providers in TestNG

 We can merge more than one data providers into.

EX:

public Object[][] dp1() {
 return new Object[][] {{ "a", "b" },{ "c", "d" }};
}

public Object[][] dp2() {
  return new Object[][] {{ "e", "f" },{ "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);
}