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

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use nu_test_support::fs::Stub::FileWithContentToBeTrimmed;
use nu_test_support::playground::Playground;
use nu_test_support::{nu, pipeline};
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#[test]
fn changes_the_column_name() {
Playground::setup("rename_test_1", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_cuatro_mosqueteros.txt",
r#"
Andrés N. Robalino
Jonathan Turner
Yehuda Katz
Jason Gedge
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_cuatro_mosqueteros.txt
| lines
| wrap name
| rename mosqueteros
| get mosqueteros
| length
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"#
));
assert_eq!(actual.out, "4");
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})
}
#[test]
fn keeps_remaining_original_names_given_less_new_names_than_total_original_names() {
Playground::setup("rename_test_2", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_cuatro_mosqueteros.txt",
r#"
Andrés N. Robalino
Jonathan Turner
Yehuda Katz
Jason Gedge
"#,
)]);
let actual = nu!(
cwd: dirs.test(), pipeline(
r#"
open los_cuatro_mosqueteros.txt
| lines
| wrap name
| default hit "arepa!"
| rename mosqueteros
| get hit
| length
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"#
));
assert_eq!(actual.out, "4");
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})
}
#[test]
fn errors_if_no_columns_present() {
Playground::setup("rename_test_3", |dirs, sandbox| {
sandbox.with_files(vec![FileWithContentToBeTrimmed(
"los_cuatro_mosqueteros.txt",
r#"
Andrés N. Robalino
Jonathan Turner
Yehuda Katz
Jason Gedge
"#,
)]);
let actual = nu!(
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cwd: dirs.test(), pipeline(
r#"
open los_cuatro_mosqueteros.txt
| lines
| rename mosqueteros
"#
));
assert!(actual.err.contains("no column names available"));
assert!(actual.err.contains("can't rename"));
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})
}