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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /compiler/rustc_data_structures/src/fingerprint
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compiler/rustc_data_structures/src/fingerprint')
-rw-r--r--compiler/rustc_data_structures/src/fingerprint/tests.rs14
1 files changed, 14 insertions, 0 deletions
diff --git a/compiler/rustc_data_structures/src/fingerprint/tests.rs b/compiler/rustc_data_structures/src/fingerprint/tests.rs
new file mode 100644
index 000000000..9b0783e33
--- /dev/null
+++ b/compiler/rustc_data_structures/src/fingerprint/tests.rs
@@ -0,0 +1,14 @@
+use super::*;
+
+// Check that `combine_commutative` is order independent.
+#[test]
+fn combine_commutative_is_order_independent() {
+ let a = Fingerprint::new(0xf6622fb349898b06, 0x70be9377b2f9c610);
+ let b = Fingerprint::new(0xa9562bf5a2a5303c, 0x67d9b6c82034f13d);
+ let c = Fingerprint::new(0x0d013a27811dbbc3, 0x9a3f7b3d9142ec43);
+ let permutations = [(a, b, c), (a, c, b), (b, a, c), (b, c, a), (c, a, b), (c, b, a)];
+ let f = a.combine_commutative(b).combine_commutative(c);
+ for p in &permutations {
+ assert_eq!(f, p.0.combine_commutative(p.1).combine_commutative(p.2));
+ }
+}