use assert_cmd::crate_name;
use assert_cmd::prelude::*; // Add methods on commands
use predicates::prelude::*; // Used for writing assertions
use std::io::Write;
use std::process::Command; // Run programs
use tempfile::NamedTempFile;

#[test]
fn find_a_match() {
    let mut result = Vec::new();
    galaxy::find_matches("lorem ipsum\ndolor sit amet", "lorem", &mut result);
    assert_eq!(result, b" 1| lorem ipsum\n");
}

#[test]
fn file_doesnt_exist() -> Result<(), Box<dyn std::error::Error>> {
    let mut cmd = Command::cargo_bin(crate_name!())?;

    cmd.arg("foobar").arg("test/file/doesnt/exist");
    cmd.assert()
        .failure()
        .stderr(predicate::str::contains("No such file or directory"));

    Ok(())
}

#[test]
fn find_content_in_file() -> Result<(), Box<dyn std::error::Error>> {
    let mut file = NamedTempFile::new()?;
    writeln!(file, "A test\nActual content\nMore content\nAnother test")?;

    let mut cmd = Command::cargo_bin(crate_name!())?;
    cmd.arg("test").arg(file.path());
    cmd.assert()
        .success()
        .stdout(predicate::str::contains(" 1| A test\n 4| Another test"));

    Ok(())
}