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|
//! Game of Life module for generating the CLI app, validating the options
//! and starting the simulation
use clap::{crate_authors, crate_version, App, Arg};
/// Options module for validations and Opts struct
pub(crate) mod opts;
/// Generators Module to provide interface for generating universes
/// using Seed or File input
pub(crate) mod generators;
/// Universe module for running the simulation
pub(crate) mod universe;
/// Define the Clap CLI App for running Game of Life simulation
///
/// Using Clap to define the available options that can be used with game of life
pub(crate) fn app() -> App<'static> {
App::new("Game of Life")
.author(crate_authors!())
.version(crate_version!())
.arg(
Arg::new("seed")
.about("Specify the seed number to use as an initial state [default: random]")
.takes_value(true)
.long("seed")
.short('s')
.conflicts_with("input")
.display_order(0)
)
.arg(
Arg::new("input")
.about("Specify the path/URL for the file to use as an initial state. (used instead of seed)")
.takes_value(true)
.long("input")
.short('i')
.display_order(1)
)
.arg(
Arg::new("width")
.about("Specify the width of generated universe. [default: terminal width]")
.takes_value(true)
.long("width")
.validator(opts::validators::is_fitting_term_width)
.display_order(2)
)
.arg(
Arg::new("height")
.about("Specify the width of generated universe. [default: terminal height]")
.takes_value(true)
.long("height")
.validator(opts::validators::is_fitting_term_height)
.display_order(3)
)
.arg(
Arg::new("live-cell")
.about("Specify the live-cell representation")
.takes_value(true)
.long("live-cell")
.default_value("█")
.display_order(4)
)
.arg(
Arg::new("dead-cell")
.about("Specify the dead-cell representation")
.takes_value(true)
.long("dead-cell")
.default_value(" ")
.display_order(5)
)
.arg(
Arg::new("delay")
.about("Specify the introduced delay between each generation")
.takes_value(true)
.short('d')
.long("delay")
.default_value("50")
.validator(opts::validators::is_positive)
.display_order(6)
)
}
#[cfg(test)]
mod app {
use super::*;
#[test]
fn no_options() {
let matches = app().get_matches_from(vec![""]);
assert_eq!(matches.value_of("seed"), None);
assert_eq!(matches.value_of("input"), None);
assert_eq!(matches.value_of("width"), None);
assert_eq!(matches.value_of("height"), None);
assert_eq!(matches.value_of("live-cell"), Some("█"));
assert_eq!(matches.value_of("dead-cell"), Some(" "));
assert_eq!(matches.value_of("delay"), Some("50"));
}
#[test]
fn seed() {
let matches = app().get_matches_from(vec!["", "--seed=1337"]);
assert_eq!(matches.value_of("seed"), Some("1337"));
}
#[test]
fn input() {
let matches = app().get_matches_from(vec!["", "--input=file"]);
assert_eq!(matches.value_of("input"), Some("file"));
}
#[test]
fn seed_and_input() {
let matches = app().try_get_matches_from(vec!["", "--seed=1337", "--input=file"]);
assert!(matches.is_err());
}
#[test]
fn valid_width() {
let matches = app().get_matches_from(vec!["", "--width=13"]);
assert_eq!(matches.value_of("width"), Some("13"));
}
#[test]
fn valid_height() {
let matches = app().get_matches_from(vec!["", "--height=13"]);
assert_eq!(matches.value_of("height"), Some("13"));
}
#[test]
fn invalid_width() {
let matches = app().try_get_matches_from(vec!["", "--width=1337"]);
assert!(matches.is_err());
}
#[test]
fn invalid_height() {
let matches = app().try_get_matches_from(vec!["", "--height=1337"]);
assert!(matches.is_err());
}
#[test]
fn valid_delay() {
let matches = app().get_matches_from(vec!["", "--delay=13"]);
assert_eq!(matches.value_of("delay"), Some("13"));
}
#[test]
fn invalid_delay() {
let matches = app().try_get_matches_from(vec!["", "--delay=-13"]);
assert!(matches.is_err());
}
#[test]
fn live_and_dead_cells() {
let matches = app().get_matches_from(vec!["", "--live-cell=x", "--dead-cell=x"]);
assert_eq!(matches.value_of("live-cell"), Some("x"));
assert_eq!(matches.value_of("dead-cell"), Some("x"));
}
}
/// Generate a universe based on the options
///
/// If an input is provided, the input will be used (taking precedence over seed)
/// Else use the seed option (defaults to random when not provided).
pub(crate) fn generate(opts: opts::Opts) -> universe::Universe {
match opts.input {
Some(_) => generators::input::new(opts),
None => generators::seed::new(opts),
}
}
#[cfg(test)]
mod generate {
use super::*;
use mocktopus::mocking::*;
fn universe_mock(opts: opts::Opts) -> universe::Universe {
universe::Universe {
opts,
current: vec![vec![]],
future: vec![vec![]],
}
}
#[test]
fn without_input() {
let opts = opts::Opts {
seed: 1337,
input: None,
width: 13,
height: 13,
live_cell: 'L',
dead_cell: 'D',
delay: 13,
};
generators::seed::new.mock_safe(|opts| MockResult::Return(universe_mock(opts)));
generators::input::new.mock_safe(|_| panic!());
assert_eq!(generate(opts.clone()), universe_mock(opts.clone()));
}
#[test]
fn with_input() {
let opts = opts::Opts {
seed: 1337,
input: Some(String::from("input")),
width: 13,
height: 13,
live_cell: 'L',
dead_cell: 'D',
delay: 13,
};
generators::seed::new.mock_safe(|_| panic!());
generators::input::new.mock_safe(|opts| MockResult::Return(universe_mock(opts)));
assert_eq!(generate(opts.clone()), universe_mock(opts.clone()));
}
}
|
