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test: printf: Add nan, inf, negative zero

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Add a few end-to-end tests for printf of unusual floats (nan,
infinity, negative zero).
This commit is contained in:
Nicolas Boichat
2025-03-14 12:42:00 +01:00
parent b7dcaa34da
commit 92a291b71d
1 changed files with 24 additions and 0 deletions
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tests/by-util/test_printf.rs
+24
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@@ -886,6 +886,30 @@ fn float_with_zero_precision_should_pad() {
.stdout_only("-01");
}
#[test]
fn float_non_finite() {
new_ucmd!()
.args(&[
"%f %f %F %f %f %F",
"nan",
"-nan",
"nan",
"inf",
"-inf",
"inf",
])
.succeeds()
.stdout_only("nan -nan NAN inf -inf INF");
}
#[test]
fn float_zero_neg_zero() {
new_ucmd!()
.args(&["%f %f", "0.0", "-0.0"])
.succeeds()
.stdout_only("0.000000 -0.000000");
}
#[test]
fn precision_check() {
new_ucmd!()