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|
mod elements;
use elements::verse::Verse;
pub mod read;
pub mod recite;
/// Parse and run shell commands or `dwvsh` files
///
/// A [Poem] is the structure that contains a full shell command/program. It
/// may be composed of one or many [Verse]'s.
pub type Poem = Vec<Verse>;
#[cfg(test)]
mod tests {
use super::elements::rune::Rune;
use super::read::Readable;
use super::*;
#[test]
fn it_parses_a_verse_with_no_meter() {
let poem = Poem::read("cargo build --release".to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.first().unwrap().verb(), "cargo");
}
#[test]
fn it_parses_a_verse_with_the_couplet_meter() {
let poem = Poem::read("ls -la | lolcat".to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.first().unwrap().verb(), "ls");
assert_eq!(poem.first().unwrap().meter, Rune::Couplet);
}
#[test]
fn it_parses_a_verse_with_the_quiet_meter() {
let poem = Poem::read("sleep 20 &".to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.first().unwrap().verb(), "sleep");
assert_eq!(poem.first().unwrap().meter, Rune::Quiet);
}
#[test]
fn it_parses_a_verse_with_the_and_meter() {
let poem = Poem::read("sleep 2 && ls -la".to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.first().unwrap().verb(), "sleep");
assert_eq!(poem.first().unwrap().meter, Rune::And);
}
#[test]
fn it_parses_a_verse_with_the_continue_meter() {
let poem = Poem::read("sleep 2; ls -la".to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.first().unwrap().verb(), "sleep");
assert_eq!(poem.first().unwrap().meter, Rune::Continue);
}
#[test]
fn it_parses_a_verse_with_the_read_rune() {
let poem = Poem::read("lolcat < src/main.rs".to_string());
assert!(poem.is_ok());
let mut verses = poem.unwrap().into_iter();
let verse = verses.next().unwrap();
assert_eq!(verse.io, Rune::Read);
assert_eq!(
verse.stanza,
vec!["lolcat", "<", "src/main.rs"]
.iter()
.map(|s| s.to_string())
.collect::<Vec<String>>()
);
}
#[test]
fn it_parses_a_verse_with_the_write_rune() {
let poem = Poem::read("cat src/main.rs > /dev/null".to_string());
assert!(poem.is_ok());
let mut verses = poem.unwrap().into_iter();
let verse = verses.next().unwrap();
assert_eq!(verse.io, Rune::Write);
assert_eq!(
verse.stanza,
vec!["cat", "src/main.rs", "<", "/dev/null"]
.iter()
.map(|s| s.to_string())
.collect::<Vec<String>>()
);
}
#[test]
fn it_parses_a_verse_with_the_addendum_rune() {
let poem = Poem::read("cat src/main.rs >> /dev/null".to_string());
assert!(poem.is_ok());
let mut verses = poem.unwrap().into_iter();
let verse = verses.next().unwrap();
assert_eq!(verse.io, Rune::Addendum);
assert_eq!(
verse.stanza,
vec!["cat", "src/main.rs", "<", "/dev/null"]
.iter()
.map(|s| s.to_string())
.collect::<Vec<String>>()
);
}
#[test]
fn it_throws_a_parse_error_if_no_files_are_specified_for_the_read_rune() {
let poem = Poem::read("lolcat <".to_string());
assert!(poem.is_err());
let poem = Poem::read("lolcat <;".to_string());
assert!(poem.is_err());
let poem = Poem::read("lolcat < && ls -la".to_string());
assert!(poem.is_err());
}
#[test]
fn it_throws_a_parse_error_if_no_files_are_specified_for_the_write_rune() {
let poem = Poem::read("cat src/main.rs >".to_string());
assert!(poem.is_err());
let poem = Poem::read("cat src/main.rs >;".to_string());
assert!(poem.is_err());
let poem = Poem::read("cat > && ls -la".to_string());
assert!(poem.is_err());
}
#[test]
fn it_throws_a_parse_error_if_no_files_are_specified_for_the_addendum_rune() {
let poem = Poem::read("cat src/main.rs >>".to_string());
assert!(poem.is_err());
let poem = Poem::read("cat src/main.rs >>;".to_string());
assert!(poem.is_err());
let poem = Poem::read("cat >> && ls -la".to_string());
assert!(poem.is_err());
}
#[test]
fn it_parses_a_complex_verse_with_lots_of_different_meters() {
let poem = Poem::read("ls -la | lolcat && echo hello | lolcat && sleep 2 &".to_string());
assert!(poem.is_ok());
let mut verses = poem.unwrap().into_iter();
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "ls");
assert_eq!(verse.clause().unwrap(), vec!["-la".to_string()]);
assert_eq!(verse.meter, Rune::Couplet);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "lolcat");
assert_eq!(verse.meter, Rune::And);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "echo");
assert_eq!(verse.clause().unwrap(), vec!["hello".to_string()]);
assert_eq!(verse.meter, Rune::Couplet);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "lolcat");
assert_eq!(verse.meter, Rune::And);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "sleep");
assert_eq!(verse.clause().unwrap(), vec!["2".to_string()]);
assert_eq!(verse.meter, Rune::Quiet);
}
#[test]
fn it_parses_the_continue_meter_without_a_stanza() {
let poem = Poem::read(";;;;;;;".to_string());
assert!(poem.is_ok());
}
#[test]
fn it_errors_if_the_couplet_meter_is_used_without_a_stanza() {
let poem = Poem::read("|".to_string());
assert!(poem.is_err());
}
#[test]
fn it_errors_if_the_quiet_meter_is_used_without_a_stanza() {
let poem = Poem::read("&".to_string());
assert!(poem.is_err());
}
#[test]
fn it_errors_if_the_and_meter_is_used_without_a_stanza() {
let poem = Poem::read("&&".to_string());
assert!(poem.is_err());
}
#[test]
fn it_parses_a_file() {
let file = r"
ps aux | lolcat
sleep 2
";
let poem = Poem::read(file.to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.len(), 3);
let mut verses = poem.into_iter();
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "ps");
assert_eq!(verse.clause().unwrap(), vec!["aux".to_string()]);
assert_eq!(verse.meter, Rune::Couplet);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "lolcat");
assert_eq!(verse.meter, Rune::Continue);
let verse = verses.next().unwrap();
assert_eq!(verse.verb(), "sleep");
assert_eq!(verse.clause().unwrap(), vec!["2".to_string()]);
assert_eq!(verse.meter, Rune::Continue);
}
#[test]
fn it_parses_a_longer_file() {
let file = r"
ps aux | lolcat
sleep 2
ps aux | lolcat
sleep 2
echo hello there
export PATH=$PATH:~/.local/bin
ps aux | lolcat && lolcat src/main.rs
fortune | cowsay | lolcat
wc -l src/**/*.rs | lolcat; ls -la | grep git
";
let poem = Poem::read(file.to_string());
assert!(poem.is_ok());
let poem = poem.unwrap();
assert_eq!(poem.len(), 18);
}
#[test]
fn it_catches_parser_errors_related_to_invalid_use_of_special_runes() {
let poetry = "cat file.txt &&&".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
let poetry = "cat file.txt&&|".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
let poetry = "cat <".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
}
#[test]
fn it_catches_parser_errors_related_to_strings() {
let poetry = "echo 'hello".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
let poetry = "echo \"hello".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
let poetry = "`true".to_string();
assert_eq!(Poem::read(poetry).is_err(), true);
}
#[test]
fn it_interprets_tilda_as_home() {
let poetry = "cd ~".to_string();
let poem = Poem::read(poetry).unwrap();
assert_eq!(poem[0].verb(), "cd");
assert_eq!(poem[0].clause(), Some(vec![env!("HOME").to_string()]));
let poetry = "cd ~/Code/dwarvish".to_string();
let poem = Poem::read(poetry).unwrap();
assert_eq!(poem[0].verb(), "cd");
assert_eq!(
poem[0].clause(),
Some(vec![format!("{}/Code/dwarvish", env!("HOME")).to_string()])
);
assert_eq!(poem[0].meter, Rune::None);
}
}
|
