PigTest test = createPigTest("datafu/bags/distinctByTest.pig");
writeLinesToFile("input",
"({(Z,1,0),(A,1,0),(A,1,0),(B,2,0),(B,22,1),(C,3,0),(D,4,0),(E,5,0)})");
test.runScript();
assertOutput(test, "data2",
"({(Z,1,0),(A,1,0),(B,2,0),(C,3,0),(D,4,0),(E,5,0)})");
}