diff options
| -rw-r--r-- | Cargo.toml | 1 | ||||
| -rw-r--r-- | src/cli.rs | 66 | ||||
| -rw-r--r-- | src/main.rs | 8 |
3 files changed, 75 insertions, 0 deletions
@@ -4,3 +4,4 @@ version = "0.1.0" edition = "2024" [dependencies] +clap = { version = "4.5", features = ["derive"] } diff --git a/src/cli.rs b/src/cli.rs new file mode 100644 index 0000000..a223b8c --- /dev/null +++ b/src/cli.rs @@ -0,0 +1,66 @@ +use clap::Parser; + +/// Minimal SafariBooks port (cookies only). +#[derive(Parser, Debug, PartialEq)] +#[command(version)] +pub struct Args { + /// Book digits ID from the O'Reilly URL. + pub bookid: String, + + /// Do not delete the log file on success. + #[arg(long = "preserve-log")] + pub preserve_log: bool, +} + +#[cfg(test)] +mod tests { + use super::Args; + use clap::{CommandFactory, Parser}; + + #[test] + fn parses_positional_bookid_only() { + // safaribooks-rs 9781491958698 + let args = Args::try_parse_from(["safaribooks-rs", "9781491958698"]).unwrap(); + assert_eq!(args.bookid, "9781491958698"); + assert!(!args.preserve_log); + } + + #[test] + fn parses_with_preserve_log_flag() { + // safaribooks-rs --preserve-log 9781491958698 + let args = + Args::try_parse_from(["safaribooks-rs", "--preserve-log", "9781491958698"]).unwrap(); + assert_eq!(args.bookid, "9781491958698"); + assert!(args.preserve_log); + } + + #[test] + fn error_when_missing_bookid() { + // safaribooks-rs --preserve-log + let err = Args::try_parse_from(["safaribooks-rs", "--preserve-log"]).unwrap_err(); + let msg = err.to_string(); + // clap’s message should indicate the missing required argument + assert!(msg.contains("<BOOKID>")); + } + + #[test] + fn error_on_unknown_flag() { + // safaribooks-rs --kindle 9781491958698 + let err = + Args::try_parse_from(["safaribooks-rs", "--kindle", "9781491958698"]).unwrap_err(); + let msg = err.to_string().to_lowercase(); + assert!(msg.contains("unexpected argument '--kindle' found")); + } + + #[test] + fn help_and_version_are_available() { + // `--help` and `--version` are auto-provided by clap + let help = Args::command().render_help().to_string(); + assert!(help.contains("Usage:")); + assert!(help.contains("<BOOKID>")); + assert!(help.contains("--preserve-log")); + + let version = Args::command().render_version(); + assert!(!version.trim().is_empty()); + } +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..3b3e84d --- /dev/null +++ b/src/main.rs @@ -0,0 +1,8 @@ +mod cli; + +use clap::Parser; +use cli::Args; + +fn main() { + let args = Args::parse(); +} |