nushell/crates/nu-cli/tests/custom_completions.rs

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Rust
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pub mod support;
use nu_cli::NuCompleter;
use reedline::Completer;
use support::{match_suggestions, new_engine};
#[test]
fn variables_completions() {
// Create a new engine
let (dir, _, mut engine, mut stack) = new_engine();
// Add record value as example
let record = r#"def animals [] { ["cat", "dog", "eel" ] }
def my-command [animal: string@animals] { print $animal }"#;
assert!(support::merge_input(record.as_bytes(), &mut engine, &mut stack, dir).is_ok());
// Instatiate a new completer
let mut completer = NuCompleter::new(std::sync::Arc::new(engine), stack);
// Test completions for $nu
let suggestions = completer.complete("my-command ".into(), 11);
assert_eq!(3, suggestions.len());
let expected: Vec<String> = vec!["cat".into(), "dog".into(), "eel".into()];
// Match results
match_suggestions(expected, suggestions);
}