nushell/crates/nu-command/tests/commands/empty.rs

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2020-10-06 12:21:20 +02:00
use nu_test_support::{nu, pipeline};
#[test]
fn reports_emptiness() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [[are_empty];
[([[check]; [[]] ])]
[([[check]; [""] ])]
[([[check]; [(wrap)] ])]
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]
| get are_empty
| empty? check
| where check
| length
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"#
));
assert_eq!(actual.out, "3");
}
#[test]
fn sets_block_run_value_for_an_empty_column() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [
[ first_name, last_name, rusty_at, likes ];
[ Andrés, Robalino, 10/11/2013, 1 ]
[ Jonathan, Turner, 10/12/2013, 1 ]
[ Jason, Gedge, 10/11/2013, 1 ]
[ Yehuda, Katz, 10/11/2013, '' ]
]
| empty? likes -b { 1 }
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| get likes
| math sum
"#
));
assert_eq!(actual.out, "4");
}
#[test]
fn sets_block_run_value_for_many_empty_columns() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [
[ boost check ];
[ 1, [] ]
[ 1, "" ]
[ 1, (wrap) ]
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]
| empty? boost check -b { 1 }
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| get boost check
| math sum
"#
));
assert_eq!(actual.out, "6");
}
#[test]
fn passing_a_block_will_set_contents_on_empty_cells_and_leave_non_empty_ones_untouched() {
let actual = nu!(
cwd: ".", pipeline(
r#"
echo [
[ NAME, LVL, HP ];
[ Andrés, 30, 3000 ]
[ Alistair, 29, 2900 ]
[ Arepas, "", "" ]
[ Jorge, 30, 3000 ]
]
| empty? LVL -b { 9 }
| empty? HP -b {
$it.LVL * 1000
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}
| math sum
| get HP
"#
));
assert_eq!(actual.out, "17900");
}