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The output of these tests is too complicated to comfortably verify by hand, but we can still use them to observe changes to the underlying mappings produced by codegen/LLVM. If these tests fail due to non-coverage changes (e.g. in HIR-to-MIR lowering or MIR optimizations), it should usually be OK to just `--bless` them, as long as the `run-coverage` test suite still works.
89 lines
2.0 KiB
Rust
89 lines
2.0 KiB
Rust
// Enables `no_coverage` on the entire crate
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#![feature(no_coverage)]
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#[no_coverage]
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fn do_not_add_coverage_1() {
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println!("called but not covered");
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}
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fn do_not_add_coverage_2() {
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#![no_coverage]
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println!("called but not covered");
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}
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#[no_coverage]
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#[allow(dead_code)]
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fn do_not_add_coverage_not_called() {
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println!("not called and not covered");
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}
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fn add_coverage_1() {
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println!("called and covered");
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}
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fn add_coverage_2() {
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println!("called and covered");
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}
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#[allow(dead_code)]
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fn add_coverage_not_called() {
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println!("not called but covered");
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}
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// FIXME: These test-cases illustrate confusing results of nested functions.
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// See https://github.com/rust-lang/rust/issues/93319
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mod nested_fns {
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#[no_coverage]
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pub fn outer_not_covered(is_true: bool) {
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fn inner(is_true: bool) {
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if is_true {
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println!("called and covered");
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} else {
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println!("absolutely not covered");
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}
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}
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println!("called but not covered");
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inner(is_true);
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}
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pub fn outer(is_true: bool) {
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println!("called and covered");
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inner_not_covered(is_true);
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#[no_coverage]
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fn inner_not_covered(is_true: bool) {
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if is_true {
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println!("called but not covered");
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} else {
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println!("absolutely not covered");
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}
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}
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}
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pub fn outer_both_covered(is_true: bool) {
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println!("called and covered");
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inner(is_true);
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fn inner(is_true: bool) {
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if is_true {
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println!("called and covered");
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} else {
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println!("absolutely not covered");
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}
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}
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}
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}
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fn main() {
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let is_true = std::env::args().len() == 1;
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do_not_add_coverage_1();
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do_not_add_coverage_2();
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add_coverage_1();
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add_coverage_2();
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nested_fns::outer_not_covered(is_true);
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nested_fns::outer(is_true);
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nested_fns::outer_both_covered(is_true);
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}
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