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

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use std::path::PathBuf;
use nu_cli::NuCompleter;
use nu_command::create_default_context;
use nu_protocol::engine::{EngineState, Stack};
use nu_test_support::fs;
use reedline::{Completer, Suggestion};
const SEP: char = std::path::MAIN_SEPARATOR;
#[test]
fn file_completions() {
// Create a new engine
let (dir, dir_str, engine) = new_engine();
let stack = Stack::new();
// Instatiate a new completer
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let mut completer = NuCompleter::new(std::sync::Arc::new(engine), stack);
// Test completions for the current folder
let target_dir = format!("cp {}", dir_str);
let suggestions = completer.complete(&target_dir, target_dir.len());
// Create the expected values
let expected_paths: Vec<String> = vec![
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file(dir.join("nushell")),
folder(dir.join("test_a")),
folder(dir.join("test_b")),
folder(dir.join("another")),
file(dir.join(".hidden_file")),
folder(dir.join(".hidden_folder")),
];
// Match the results
match_suggestions(expected_paths, suggestions);
// Test completions for the completions/another folder
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let target_dir = format!("cd {}", folder(dir.join("another")));
let suggestions = completer.complete(&target_dir, target_dir.len());
// Create the expected values
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let expected_paths: Vec<String> = vec![file(dir.join("another").join("newfile"))];
// Match the results
match_suggestions(expected_paths, suggestions);
}
#[test]
fn folder_completions() {
// Create a new engine
let (dir, dir_str, engine) = new_engine();
let stack = Stack::new();
// Instatiate a new completer
let mut completer = NuCompleter::new(std::sync::Arc::new(engine), stack);
// Test completions for the current folder
let target_dir = format!("cd {}", dir_str);
let suggestions = completer.complete(&target_dir, target_dir.len());
// Create the expected values
let expected_paths: Vec<String> = vec![
folder(dir.join("test_a")),
folder(dir.join("test_b")),
folder(dir.join("another")),
folder(dir.join(".hidden_folder")),
];
// Match the results
match_suggestions(expected_paths, suggestions);
}
// creates a new engine with the current path into the completions fixtures folder
pub fn new_engine() -> (PathBuf, String, EngineState) {
// Target folder inside assets
let dir = fs::fixtures().join("completions");
let mut dir_str = dir
.clone()
.into_os_string()
.into_string()
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.unwrap_or_default();
dir_str.push(SEP);
// Create a default engine
(dir.clone(), dir_str, create_default_context(dir))
}
// match a list of suggestions with the expected values
pub fn match_suggestions(expected: Vec<String>, suggestions: Vec<Suggestion>) {
expected.iter().zip(suggestions).for_each(|it| {
assert_eq!(it.0, &it.1.value);
});
}
// append the separator to the converted path
pub fn folder(path: PathBuf) -> String {
let mut converted_path = file(path);
converted_path.push(SEP);
converted_path
}
// convert a given path to string
pub fn file(path: PathBuf) -> String {
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path.into_os_string().into_string().unwrap_or_default()
}