    1|       |// Enables `no_coverage` on the entire crate
    2|       |#![feature(no_coverage)]
    3|       |
    4|       |#[no_coverage]
    5|       |fn do_not_add_coverage_1() {
    6|       |    println!("called but not covered");
    7|       |}
    8|       |
    9|       |fn do_not_add_coverage_2() {
   10|       |    #![no_coverage]
   11|       |    println!("called but not covered");
   12|       |}
   13|       |
   14|       |#[no_coverage]
   15|       |fn do_not_add_coverage_not_called() {
   16|       |    println!("not called and not covered");
   17|       |}
   18|       |
   19|      1|fn add_coverage_1() {
   20|      1|    println!("called and covered");
   21|      1|}
   22|       |
   23|      1|fn add_coverage_2() {
   24|      1|    println!("called and covered");
   25|      1|}
   26|       |
   27|      0|fn add_coverage_not_called() {
   28|      0|    println!("not called but covered");
   29|      0|}
   30|       |
   31|       |// FIXME: These test-cases illustrate confusing results of nested functions.
   32|       |// See https://github.com/rust-lang/rust/issues/93319
   33|       |mod nested_fns {
   34|       |    #[no_coverage]
   35|       |    pub fn outer_not_covered(is_true: bool) {
   36|      1|        fn inner(is_true: bool) {
   37|      1|            if is_true {
   38|      1|                println!("called and covered");
   39|      1|            } else {
   40|      0|                println!("absolutely not covered");
   41|      0|            }
   42|      1|        }
   43|       |        println!("called but not covered");
   44|       |        inner(is_true);
   45|       |    }
   46|       |
   47|      1|    pub fn outer(is_true: bool) {
   48|      1|        println!("called and covered");
   49|      1|        inner_not_covered(is_true);
   50|      1|
   51|      1|        #[no_coverage]
   52|      1|        fn inner_not_covered(is_true: bool) {
   53|      1|            if is_true {
   54|      1|                println!("called but not covered");
   55|      1|            } else {
   56|      1|                println!("absolutely not covered");
   57|      1|            }
   58|      1|        }
   59|      1|    }
   60|       |
   61|      1|    pub fn outer_both_covered(is_true: bool) {
   62|      1|        println!("called and covered");
   63|      1|        inner(is_true);
   64|      1|
   65|      1|        fn inner(is_true: bool) {
   66|      1|            if is_true {
   67|      1|                println!("called and covered");
   68|      1|            } else {
   69|      0|                println!("absolutely not covered");
   70|      0|            }
   71|      1|        }
   72|      1|    }
   73|       |}
   74|       |
   75|      1|fn main() {
   76|      1|    let is_true = std::env::args().len() == 1;
   77|      1|
   78|      1|    do_not_add_coverage_1();
   79|      1|    do_not_add_coverage_2();
   80|      1|    add_coverage_1();
   81|      1|    add_coverage_2();
   82|      1|
   83|      1|    nested_fns::outer_not_covered(is_true);
   84|      1|    nested_fns::outer(is_true);
   85|      1|    nested_fns::outer_both_covered(is_true);
   86|      1|}

