use insta::assert_debug_snapshot as assert_snapshot;
use oyster_parser::{ast, ParseError};

fn parse(s: &str) -> Result<ast::Code, ParseError> {
    ast::Code::try_from(s)
}

#[test]
fn empty() {
    let source = "";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn word() {
    let source = "word";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn word_with_escape() {
    let source = r"hello\#world";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn unicode() {
    let source = "谚语";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn simple_command() {
    let source = "echo hi";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn semicolon() {
    let source = "hello; hi";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn comment() {
    let source = r"# a
# b";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn inline_comment() {
    let source = "whoami # hello";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn pipeline() {
    let source = "whoami | cat";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn multiline_pipeline() {
    let source = r"whoami |
wc -l";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn comment_in_pipeline() {
    let source = r"whoami | # comment
wc -l";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn reject_leading_pipe() {
    let source = r"whoami
| cat";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn reject_trailing_pipe() {
    let source = "whoami |";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn reject_pipe_semicolon() {
    let source = "whoami | ; cat";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn reject_double_pipe() {
    let source = "whoami | | cat";

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn double_quote_string() {
    let source = r#""hello world""#;

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn escaped_char_in_double_quotes() {
    let source = r#""hello \" world""#;

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn unterminated_double_quotes() {
    let source = r#""hello world"#;

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn command_substitution() {
    let source = r#"echo (whoami)"#;

    let actual = parse(source);

    assert_snapshot!(actual);
}

#[test]
fn quoted_command_substitution() {
    let source = r#"echo "(whoami)
        ""#;

    let actual = parse(source);

    assert_snapshot!(actual);
}