use std::{fs::read_to_string, path::Path};

use requirements::{self, Requirement, enums::Comparison};

#[test]
fn test_one_requirement() {
    assert_eq!(
        requirements::parse_str(&"pip\n").unwrap(),
        vec![Requirement {
            line: String::from("pip"),
            name: Some(String::from("pip")),
            specs: vec![],
            extras: vec![],
            comment: None,
            specifier: true,
            editable: false,
            uri: None,
            subdirectory: None,
            path: None,
            hash_name: None,
            hash: None,
            revision: None,
            vcs: None,
            extra_index_url: String::new(),
        }]
    )
}

#[test]
fn test_requirements_txt() {
    let path = Path::new("tests/requirements.txt");
    let file = read_to_string(&path).expect("Cannot read file");
    assert_eq!(
        requirements::parse_str(&file).unwrap(),
        vec![
            Requirement {
                line: String::from("# Example requirement file"),
                name: None,
                specs: vec![],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("--extra-index-url https://pypi.example.com/pypi"),
                name: None,
                specs: vec![],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(), // String::from("https://pypi.example.com/pypi")
            },
            Requirement {
                line: String::from("aiohttp"),
                name: Some(String::from("aiohttp")),
                specs: vec![],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("black==19.10b0"),
                name: Some(String::from("black")),
                specs: vec![(Comparison::Equal, String::from("19.10b0"))],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("chardet  # upgrade at will"),
                name: Some(String::from("chardet")),
                specs: vec![],
                extras: vec![],
                comment: Some(String::from("upgrade at will")),
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("Django>=2,<3"),
                name: Some(String::from("Django")),
                specs: vec![
                    (Comparison::GreaterThanOrEqual, String::from("2")),
                    (Comparison::LessThan, String::from("3"))
                ],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("-e editable_package"),
                name: None, // Some(String::from("editable_package")),
                specs: vec![],
                extras: vec![],
                comment: None,
                specifier: true,
                editable: false, // this is wrong
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            },
            Requirement {
                line: String::from("passlib[argon2,chacha]"),
                name: Some(String::from("passlib")),
                specs: vec![],
                extras: vec![String::from("argon2"), String::from("chacha")],
                comment: None,
                specifier: true,
                editable: false,
                uri: None,
                subdirectory: None,
                path: None,
                hash_name: None,
                hash: None,
                revision: None,
                vcs: None,
                extra_index_url: String::new(),
            }
        ]
    )
}