use assert_cmd::Command;

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

    cmd.arg("tests/fixtures/haiku.txt");
    cmd.assert().success().stdout(String::from("7\n"));

    Ok(())
}

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

    cmd.arg("tests/fixtures/medium.txt");
    cmd.assert().success().stdout(String::from("8\n"));

    Ok(())
}

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

    cmd.arg("tests/fixtures/long.txt");
    cmd.assert().success().stdout(String::from("204\n"));

    Ok(())
}

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

    cmd.arg("tests/fixtures/haiku.txt")
        .arg("tests/fixtures/medium.txt")
        .arg("tests/fixtures/long.txt");
    cmd.assert().success().stdout(String::from("tests/fixtures/haiku.txt: 7\ntests/fixtures/medium.txt: 8\ntests/fixtures/long.txt: 204\ntotal: 219\n"));

    Ok(())
}

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

    cmd.arg("-")
        .write_stdin("Hello, world! My first name is Standard, my last name is In.\n");
    cmd.assert().success().stdout(String::from("12\n"));

    Ok(())
}

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

    cmd.arg("-")
        .arg("tests/fixtures/haiku.txt")
        .write_stdin("Hello, world! My first name is Standard, my last name is In.\n");
    cmd.assert().success().stdout(String::from(
        "stdin: 12\ntests/fixtures/haiku.txt: 7\ntotal: 19\n",
    ));

    Ok(())
}

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

    cmd.arg("-l").arg("tests/fixtures/haiku.txt");
    cmd.assert().success().stdout(String::from("3\n"));

    Ok(())
}

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

    cmd.arg("-l")
        .arg("tests/fixtures/haiku.txt")
        .arg("tests/fixtures/medium.txt");
    cmd.assert().success().stdout(String::from(
        "tests/fixtures/haiku.txt: 3\ntests/fixtures/medium.txt: 5\ntotal: 8\n",
    ));

    Ok(())
}

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

    cmd.arg("tests/file/doesnt/exist");
    cmd.assert()
        .failure()
        .stderr("Error! No such file or directory (os error 2): tests/file/doesnt/exist\n");

    Ok(())
}

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

    cmd.arg("tests/fixtures");
    cmd.assert()
        .failure()
        .stderr("Error! File is directory: tests/fixtures\n");

    Ok(())
}