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time: add tests for gmtime range

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mainly so we notice if this assumption does not hold for some platform
or changes in the future.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler 2020-09-15 12:20:54 +02:00 committed by Dietmar Maurer
parent 0830d33e99
commit 94c96348a7
1 changed files with 23 additions and 0 deletions
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23
proxmox/src/tools/time.rs
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@ -356,3 +356,26 @@ fn test_rfc3339_range() {
.expect("parsing first millenium string should work");
assert_eq!(parsed, first_millenium);
}
#[test]
fn test_gmtime_range() {
// year must fit into i32
let lower = -67768040609740800;
let upper = 67768036191676799;
let mut lower_tm = gmtime(lower)
.expect("gmtime should work as long as years fit into i32");
let res = timegm(&mut lower_tm).expect("converting back to epoch should work");
assert_eq!(lower, res);
gmtime(lower-1)
.expect_err("gmtime should fail for years not fitting into i32");
let mut upper_tm = gmtime(upper)
.expect("gmtime should work as long as years fit into i32");
let res = timegm(&mut upper_tm).expect("converting back to epoch should work");
assert_eq!(upper, res);
gmtime(upper+1)
.expect_err("gmtime should fail for years not fitting into i32");
}