add tests

src/disease.rs

@@ -1,10 +1,9 @@
 // use crate::prelude::*;
 
-
 // pub const MUTATION_TRAIT_INCREASE_PROBABILITY:i32 = 50;
 // pub const MUTATION_TRAIT_CHANGE_AMOUNT:i32 = 20;
 
-#[derive(Debug)]
+// #[derive(Debug)]
 pub struct Disease {
     pub infection_rate: u32,
     pub curing_rate: u32,

src/human.rs

@@ -1,7 +1,7 @@
 // use crate::prelude::*;
 
 // #[derive(Copy, Clone, PartialEq)]
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq)]
 pub enum State {
     Normal,
     Infected,
@@ -20,7 +20,7 @@ impl Human{
         Self {
             present_state: State::Normal,
             x: pos_x,
-            y : pos_y
+            y: pos_y,
         }
     }
     // pub fn new_empty() -> Self{

src/main.rs

@@ -1,13 +1,13 @@
-mod human;
 mod disease;
+mod human;
 mod population;
 mod prelude {
-    pub use crate::human::*;
     pub use crate::disease::*;
+    pub use crate::human::*;
     pub use crate::population::*;
-    pub use rand::Rng;
-    pub use console::Term;
     pub use console::style;
+    pub use console::Term;
+    pub use rand::Rng;
     pub const CORRECTED_PERCENTAGE: i32 = 101;
 }
 
@@ -15,9 +15,10 @@ use prelude::*;
 
 fn main() {
     let term = Term::stdout();
-    term.write_line("********** Rusty Propagation (Console) 2022 **********").expect("Oops Looks like we have a problem here...");
+    term.write_line("********** Rusty Propagation (Console) 2022 **********")
-    term.write_line("Press any key to start the propagation").expect("Oops Looks like we have a problem here...");
+        .expect("Oops Looks like we have a problem here...");
-
+    term.write_line("Press any key to start the propagation")
+        .expect("Oops Looks like we have a problem here...");
 
     let disease = Disease::new(20, 10, 5, String::from("Covid 44"));
     let mut population = Population::new(20, 10, 5, 300, 300, disease);
@@ -35,10 +36,14 @@ fn main() {
         counter += 1;
         stats = population.propagate();
         //population.display();
-        println!("Infecteds: {} Immunes: {} Deads: {}",stats[1],stats[2],stats[3]);
+        println!(
-        if stats[1] == 0 {break;}
+            "Infecteds: {} Immunes: {} Deads: {}",
+            stats[1], stats[2], stats[3]
+        );
+        if stats[1] == 0 {
+            break;
+        }
     }
     println!("Propagation finished in {} steps", counter);
     //population.display();
-
 }

src/population.rs

@@ -1,11 +1,30 @@
 use crate::prelude::*;
 
-#[derive(Debug)]
+// #[derive(Debug)]
 pub struct Point {
     x: i32,
     y: i32,
 }
 
+#[derive(Debug)]
+struct Stats {
+    normal: i32,
+    infected: i32,
+    immune: i32,
+    dead: i32,
+}
+
+impl Stats {
+    fn new() -> Stats {
+        Stats {
+            normal: 0,
+            infected: 0,
+            immune: 0,
+            dead: 0,
+        }
+    }
+}
+
 pub struct Population {
     pub start_infected_ratio: u32,
     pub start_immune_ratio: u32,
@@ -21,18 +40,37 @@ pub fn human_idx(x: i32, y: i32, width: i32) -> usize {
     ((y * width) + x) as usize
 }
 
-#[test]
+fn humans_stats(humans: &Vec<Human>) -> Stats {
-fn popuplation_gen() {
+    let mut stats: Stats = Stats::new();
-    let disease = Disease::new(20,10,5,String::from("Covid 44"));
+    for human in humans.iter() {
-    let population = Population::new(20,10,5,5,7,disease);
+        match human.present_state {
-    assert_eq!(population.humans.len(), 5 * 7);
+            State::Normal => {
-    for human in population.humans.iter() {
+                stats.normal += 1;
-        assert_eq!(human.present_state, State::Normal);
             }
+            State::Infected => {
+                stats.infected += 1;
+            }
+            State::Immune => {
+                stats.immune += 1;
+            }
+            State::Dead => {
+                stats.dead += 1;
+            }
+        }
+    }
+    stats
 }
 
+
 impl Population {
-    pub fn new(start_infected_ratio:u32,start_immune_ratio:u32,start_dead_ratio:u32,width:i32,height:i32,plague:Disease)->Self{
+    pub fn new(
+        start_infected_ratio: u32,
+        start_immune_ratio: u32,
+        start_dead_ratio: u32,
+        width: i32,
+        height: i32,
+        plague: Disease,
+    ) -> Self {
         let mut the_humans: Vec<Human> = Vec::with_capacity((width * height) as usize);
         for x in 0..width {
             for y in 0..height {
@@ -61,38 +99,44 @@ impl Population{
         //In other words I did it that way but it can be changed just its not the right method to have perfect ratios
         let mut rng = rand::thread_rng();
 
-        let mut i: i32 = 0;
         for x in self.humans.iter_mut() {
-            if rng.gen_range(0..CORRECTED_PERCENTAGE) < self.start_infected_ratio as i32
+            if (self.start_infected_ratio) > 0 && (rng.gen_range(0..CORRECTED_PERCENTAGE) <= self.start_infected_ratio as i32) {
-            {
                 x.present_state = State::Infected;
-            }
+            } else if self.start_immune_ratio > 0 && rng.gen_range(0..CORRECTED_PERCENTAGE) <= self.start_immune_ratio as i32 {
-            if rng.gen_range(0..CORRECTED_PERCENTAGE) < self.start_immune_ratio as i32
-            {
                 x.present_state = State::Immune;
-            }
+            } else if self.start_dead_ratio > 0 && rng.gen_range(0..CORRECTED_PERCENTAGE) <= self.start_dead_ratio as i32 {
-            if rng.gen_range(0..CORRECTED_PERCENTAGE) < self.start_dead_ratio as i32
-            {
                 x.present_state = State::Dead;
             }
-            i += 1;
         }
-        println!("generate for {} humans", i);
     }
+
     pub fn propagate(&mut self) -> [i32; 4] {
-        let mut people_to_check:Vec<Point> = Vec::with_capacity((self.width * self.height) as usize);
+        let mut people_to_check: Vec<Point> =
-        let mut people_to_infect:Vec<Point> = Vec::with_capacity((self.width * self.height) as usize);
+            Vec::with_capacity((self.width * self.height) as usize);
-        let mut people_to_cure:Vec<Point> = Vec::with_capacity((self.width * self.height) as usize);
+        let mut people_to_infect: Vec<Point> =
-        let mut people_to_kill:Vec<Point> = Vec::with_capacity((self.width * self.height) as usize);
+            Vec::with_capacity((self.width * self.height) as usize);
+        let mut people_to_cure: Vec<Point> =
+            Vec::with_capacity((self.width * self.height) as usize);
+        let mut people_to_kill: Vec<Point> =
+            Vec::with_capacity((self.width * self.height) as usize);
         let mut stats: [i32; 4] = [0, 0, 0, 0];
         // stats[0] Normal stats[1] Infected stats[2] Immune stats[3] Dead
 
         for h in self.humans.iter() {
             match h.present_state {
-                State::Normal => {stats[0] += 1;}
+                State::Normal => {
-                State::Infected => {people_to_check.push(Point{x:h.x,y:h.y});stats[1]+=1;}
+                    stats[0] += 1;
-                State::Immune => {stats[2] += 1;}
+                }
-                State::Dead => {stats[3] += 1;}
+                State::Infected => {
+                    people_to_check.push(Point { x: h.x, y: h.y });
+                    stats[1] += 1;
+                }
+                State::Immune => {
+                    stats[2] += 1;
+                }
+                State::Dead => {
+                    stats[3] += 1;
+                }
             }
         }
         //        for pos in &people_to_check {
@@ -114,26 +158,54 @@ impl Population{
                         // Vec::new();
                         //possible_infections.push(Point{x:pos.x,y:pos.y});
 
-                        possible_infections.push(Point{x:pos.x -1,y:pos.y -1});     //Top Left
+                        possible_infections.push(Point {
-                        possible_infections.push(Point{x:pos.x,y:pos.y-1});         //Top
+                            x: pos.x - 1,
-                        possible_infections.push(Point{x:pos.x +1,y:pos.y -1});     //Top Right
+                            y: pos.y - 1,
+                        }); //Top Left
+                        possible_infections.push(Point {
+                            x: pos.x,
+                            y: pos.y - 1,
+                        }); //Top
+                        possible_infections.push(Point {
+                            x: pos.x + 1,
+                            y: pos.y - 1,
+                        }); //Top Right
 
-                        possible_infections.push(Point{x:pos.x -1,y:pos.y});        //Left
+                        possible_infections.push(Point {
-                        possible_infections.push(Point{x:pos.x +1,y:pos.y});        //Right
+                            x: pos.x - 1,
+                            y: pos.y,
+                        }); //Left
+                        possible_infections.push(Point {
+                            x: pos.x + 1,
+                            y: pos.y,
+                        }); //Right
 
-                        possible_infections.push(Point{x:pos.x -1,y:pos.y + 1});    //Bottom Left
+                        possible_infections.push(Point {
-                        possible_infections.push(Point{x:pos.x,y:pos.y + 1});       //Bottom
+                            x: pos.x - 1,
-                        possible_infections.push(Point{x:pos.x + 1,y:pos.y + 1});   //Bottom Right
+                            y: pos.y + 1,
+                        }); //Bottom Left
+                        possible_infections.push(Point {
+                            x: pos.x,
+                            y: pos.y + 1,
+                        }); //Bottom
+                        possible_infections.push(Point {
+                            x: pos.x + 1,
+                            y: pos.y + 1,
+                        }); //Bottom Right
 
                         for poss_infected_pos in possible_infections.iter() {
                             //possible_infections.iter().map(|poss_infected_pos|{
-                            let inf_idx = human_idx(poss_infected_pos.x, poss_infected_pos.y, self.width);
+                            let inf_idx =
+                                human_idx(poss_infected_pos.x, poss_infected_pos.y, self.width);
                             if self.humans[inf_idx].present_state == State::Normal {
                                 if self.roll(self.plague.infection_rate) {
-                                    people_to_infect.push(Point{x:poss_infected_pos.x,y:poss_infected_pos.y});
+                                    people_to_infect.push(Point {
+                                        x: poss_infected_pos.x,
+                                        y: poss_infected_pos.y,
+                                    });
+                                }
                             }
                         }
-                        };
                     }
                 }
             } else {
@@ -176,8 +248,13 @@ impl Population{
                 //    ###
                 //    ##@
             }
-        };
+        }
-        println!("{} to infect, {} to cure, {} to kill", people_to_infect.len(), people_to_cure.len(), people_to_kill.len());
+        println!(
+            "{} to infect, {} to cure, {} to kill",
+            people_to_infect.len(),
+            people_to_cure.len(),
+            people_to_kill.len()
+        );
         for infected_position in &people_to_infect {
             // println!("To infect: {:?}", infected_position);
             //people_to_infect.iter().map(|infected_position|{
@@ -188,7 +265,7 @@ impl Population{
             self.humans[infected_index].present_state = State::Infected;
             //DEBUG
             //println!("Infected someone");
-        };
+        }
 
         for cured_position in &people_to_cure {
             //people_to_cure.iter().map(|cured_position|{
@@ -196,7 +273,7 @@ impl Population{
             self.humans[cured_index].present_state = State::Immune;
             //DEBUG
             //println!("Cured someone");
-        };
+        }
 
         for dead_position in &people_to_kill {
             //people_to_kill.iter().map(|dead_position|{
@@ -207,7 +284,7 @@ impl Population{
                 self.humans[dead_index].present_state = State::Dead;
             }
             //DEBUG
-        };
+        }
         stats
     }
     pub fn roll(&self, probability: u32) -> bool {
@@ -232,3 +309,129 @@ impl Population{
     //     }
     // }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use parameterized::parameterized;
+
+    #[parameterized(x = {
+        2, 3, 5
+    }, y = {
+        1, 4, 0
+    }, width = {
+        3, 5, 7
+    }, res = {
+        5, 23, 5
+    })]
+    fn test_human_idx(x: i32, y: i32, width: i32, res: usize) {
+        assert_eq!(human_idx(x, y, width), res);
+    }
+
+    #[test]
+    fn test_human_stats() {
+        let mut humans: Vec<Human> = Vec::with_capacity(10);
+        let mut stats: Stats;
+
+        for _ in 0..10 {
+            humans.push(Human::new(0, 0));
+        }
+        stats = humans_stats(&humans);
+        assert_eq!(stats.normal, 10);
+
+        for x in 0..2 {
+            humans[x].present_state = State::Infected;
+        }
+        for x in 2..5 {
+            humans[x].present_state = State::Immune;
+        }
+        for x in 5..9 {
+            humans[x].present_state = State::Dead;
+        }
+        stats = humans_stats(&humans);
+        assert_eq!(stats.normal, 1);
+        assert_eq!(stats.infected, 2);
+        assert_eq!(stats.immune, 3);
+        assert_eq!(stats.dead, 4);
+    }
+
+    #[test]
+    fn population_new() {
+        let disease = Disease::new(20, 10, 5, String::from("Covid 44"));
+        let population = Population::new(20, 10, 5, 5, 7, disease);
+        assert_eq!(population.humans.len(), 5 * 7);
+        for human in population.humans.iter() {
+            assert!(human.present_state == State::Normal, "all humans should be normal");
+        }
+    }
+
+    #[test]
+    fn population_gen() {
+        let disease = Disease::new(20, 10, 5, String::from("Covid 44"));
+        let (width, height) = (5, 7);
+        let mut population = Population::new(20, 10, 5, 5, 7, disease);
+
+        population.generate();
+        let stats: Stats = humans_stats(&population.humans);
+        println!("Stats: {:?}", stats);
+
+        assert_eq!(
+            stats.normal + stats.infected + stats.immune + stats.dead,
+            width * height
+        );
+    }
+
+    #[test]
+    fn plague_init_stats() {
+        let mut disease: Disease;
+        let mut population: Population;
+        let mut stats: Stats;
+        let (width, height) = (5, 7);
+
+        disease = Disease::new(0, 0, 0, String::from("Test"));
+        population = Population::new(0, 0, 0, width, height, disease);
+        population.generate();
+        stats = humans_stats(&population.humans);
+        println!("should be normal: {:?}", stats);
+        assert_eq!(stats.normal, width * height);
+
+        disease = Disease::new(0, 0, 0, String::from("Test"));
+        population = Population::new(100, 0, 0, width, height, disease);
+        population.generate();
+        stats = humans_stats(&population.humans);
+        println!("should be infected: {:?}", stats);
+        assert_eq!(stats.infected, width * height);
+
+        disease = Disease::new(0, 0, 0, String::from("Test"));
+        population = Population::new(0, 100, 0, width, height, disease);
+        population.generate();
+        stats = humans_stats(&population.humans);
+        println!("should be immune: {:?}", stats);
+        assert_eq!(stats.immune, width * height);
+
+        disease = Disease::new(0, 0, 0, String::from("Test"));
+        population = Population::new(0, 0, 100, width, height, disease);
+        population.generate();
+        stats = humans_stats(&population.humans);
+        println!("should be dead: {:?}", stats);
+        assert_eq!(stats.dead, width * height);
+
+    }
+
+    #[parameterized(infection_rate = {0, 100}, infected_expected = {0, 1})]
+    fn propage_test(infection_rate: u32, infected_expected: i32) {
+        let disease: Disease;
+        let mut population: Population;
+        let mut stats: Stats;
+        let (width, height) = (100, 100);
+
+        disease = Disease::new(infection_rate, 0, 0, String::from("Test"));
+        population = Population::new(50, 0, 0, width, height, disease);
+        stats = humans_stats(&population.humans);
+        println!("Population: {:?}", stats);
+        population.generate();
+        population.propagate();
+        stats = humans_stats(&population.humans);
+        assert!(stats.normal <= width * height * infected_expected);
+    }
+}