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72 lines
2.2 KiB
Plaintext
72 lines
2.2 KiB
Plaintext
LL| |#![feature(coverage_attribute)]
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LL| |//@ edition: 2024
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LL| |//@ compile-flags: -Zcoverage-options=branch
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LL| |//@ llvm-cov-flags: --show-branches=count
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LL| |
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LL| |macro_rules! no_merge {
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LL| | () => {
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LL| | for _ in 0..1 {}
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LL| | };
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LL| |}
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LL| |
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LL| 3|fn if_let(input: Option<&str>) {
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LL| 3| no_merge!();
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LL| |
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LL| 3| if let Some(x) = input {
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^2
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------------------
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| Branch (LL:12): [True: 2, False: 1]
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------------------
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LL| 2| say(x);
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LL| 2| } else {
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LL| 1| say("none");
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LL| 1| }
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LL| 3| say("done");
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LL| 3|}
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LL| |
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LL| 15|fn if_let_chain(a: Option<&str>, b: Option<&str>) {
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LL| 15| if let Some(x) = a
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^12
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------------------
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| Branch (LL:12): [True: 12, False: 3]
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------------------
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LL| 12| && let Some(y) = b
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^8
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------------------
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| Branch (LL:16): [True: 8, False: 4]
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------------------
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LL| 8| {
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LL| 8| say(x);
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LL| 8| say(y);
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LL| 8| } else {
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LL| 7| say("not both");
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LL| 7| }
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LL| 15| say("done");
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LL| 15|}
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LL| |
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LL| |#[coverage(off)]
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LL| |fn say(message: &str) {
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LL| | core::hint::black_box(message);
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LL| |}
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LL| |
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LL| |#[coverage(off)]
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LL| |fn main() {
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LL| | if_let(Some("x"));
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LL| | if_let(Some("x"));
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LL| | if_let(None);
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LL| |
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LL| | for _ in 0..8 {
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LL| | if_let_chain(Some("a"), Some("b"));
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LL| | }
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LL| | for _ in 0..4 {
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LL| | if_let_chain(Some("a"), None);
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LL| | }
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LL| | for _ in 0..2 {
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LL| | if_let_chain(None, Some("b"));
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LL| | }
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LL| | if_let_chain(None, None);
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LL| |}
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LL| |
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LL| |// FIXME(#124118) Actually instrument if-let and let-chains for branch coverage.
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