Two tests with exactly the same name throw exception when you try to view them

Both JUnit and TestNG have features where you can specify that a test method should once for each item in a dataset. For example, in TestNG, you might do this:

@DataProvider(name = "squareRoots")
public Object[][] createSquareRoots() {
  return new Object[][] {{4, 2}, {9, 3}, {16, 4}};
}
@Test(dataProvider = "squareRoots")
public void testMathSqrt(int val, int answer) {
  assertEquals(answer, Math.sqrt(val));
}

The result is that testMathSqrt gets run three times, and appears in the test results 3 times. If two or more of the tests fail, and you click on the test to view the results, you get an exception saying that the query did not return a unique result. For an example see:

https://bamboo.extranet.atlassian.com/browse/JST-JST-GAPPSIMPLE-491/test/case/213749056