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head: two new tests. Improves function coverage from 38 to 75 #6195

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Merged
merged 1 commit into from
Apr 6, 2024
Merged

head: two new tests. Improves function coverage from 38 to 75 #6195

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18 changes: 18 additions & 0 deletions tests/by-util/test_head.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -438,3 +438,21 @@ fn test_read_backwards_bytes_sys_kernel_profiling() {
assert_eq!(stdout_str.len(), 1);
assert!(stdout_str == "0" || stdout_str == "1");
}

#[test]
fn test_value_too_large() {
const MAX: u64 = u64::MAX;

new_ucmd!()
.args(&["-n", format!("{MAX}0").as_str(), "lorem_ipsum.txt"])
.fails()
.stderr_contains("Value too large for defined data type");
}

#[test]
fn test_all_but_last_lines() {
new_ucmd!()
.args(&["-n", "-15", "lorem_ipsum.txt"])
.succeeds()
.stdout_is_fixture("lorem_ipsum_backwards_15_lines.expected");
}
9 changes: 9 additions & 0 deletions tests/fixtures/head/lorem_ipsum_backwards_15_lines.expected
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Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
Lorem ipsum dolor sit amet,
consectetur adipiscing elit.
Nunc interdum suscipit sem vel ornare.
Proin euismod,
justo sed mollis dictum,
eros urna ultricies augue,
eu pharetra mi ex id ante.
Duis convallis porttitor aliquam.
Nunc vitae tincidunt ex.