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56cdee1fd8
# Description - Refactors `first` and `last` using `Vec::truncate` and `Vec::drain`. - `std::mem::take` was also used to eliminate a few `Value` clones. - The `NeedsPositiveValue` error now uses the span of the `rows` argument instead of the call head span. - `last` now errors on an empty stream to match `first` which does error. - Made metadata preservation more consistent. # User-Facing Changes Breaking change: `last` now errors on an empty stream to match `first` which does error.
35 lines
845 B
Rust
35 lines
845 B
Rust
use nu_test_support::{nu, pipeline};
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#[test]
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fn adds_row_data_if_column_missing() {
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let sample = r#"
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{
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"amigos": [
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{"name": "Yehuda"},
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{"name": "JT", "rusty_luck": 0},
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{"name": "Andres", "rusty_luck": 0},
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{"name":"GorbyPuff"}
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]
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}
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"#;
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let actual = nu!(pipeline(&format!(
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"
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{sample}
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| get amigos
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| default 1 rusty_luck
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| where rusty_luck == 1
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| length
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"
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)));
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assert_eq!(actual.out, "2");
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}
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#[test]
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fn default_after_empty_filter() {
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let actual = nu!("[a b] | where $it == 'c' | get -i 0 | default 'd'");
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assert_eq!(actual.out, "d");
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}
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