use assert_cmd::prelude::*;
use predicates::prelude::*;
use std::process::Command;
use std::io::{self, Write};
use tempfile::NamedTempFile;

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

    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("grrs")?;
  cmd.arg("test").arg(file.path());
  cmd.assert().success().stdout(predicate::str::contains("test\nAnother test"));

  Ok(())
}