message: Added additional checks
  Added some hit tests to some lines in lib.rs of simple_project
diff: @@ -25,4 +25,22 @@ fn simple_project_coverage() {
  .filter(|x| x.path.file_name().unwrap() == "unused.rs")
  .fold(0, |acc, ref x| acc + x.hits);
  assert_eq!(unused_hits, 0);
  +
  + let unused_hits = res.iter()
  + .filter(|x| x.path.file_name().unwrap() == "unused.rs")
  + .map(|x| x.line)
  + .collect::<Vec<_>>();
  +
  + assert_eq!(unused_hits.len(), 3);
  + assert!(unused_hits.contains(&4));
  + assert!(unused_hits.contains(&5));
  + assert!(unused_hits.contains(&6));
  +
  + assert!(res.iter().any(|ref x| x.line == 6 &&
  + x.hits == 0 &&
  + x.path.file_name().unwrap() == "lib.rs"));
  +
  + assert!(res.iter().any(|ref x| x.line == 8 &&
  + x.hits == 1 &&
  + x.path.file_name().unwrap() == "lib.rs"));
  }
  