feat: add roll method to die and dice

01.workspace/oxydice_lib/src/imp/dice_grab.rs

@@ -6,7 +6,10 @@ impl Dice {
         for _ in 1..=dice {
             handful.push(Die::new(sides));
         }
-        Self { handful }
+        Self {
+            handful,
+            roll_results: Vec::<u16>::new(),
+        }
     }
     pub fn and_grab(mut self, dice: u16, sides: u16) -> Self {
         for _ in 1..=dice {

01.workspace/oxydice_lib/src/imp/dice_roll.rs

@@ -0,0 +1,10 @@
+use crate::*;
+
+impl Dice {
+    pub fn roll(&mut self) {
+        self.roll_results.clear();
+        for die in &self.handful {
+            self.roll_results.push(die.roll())
+        }
+    }
+}

01.workspace/oxydice_lib/src/imp/die_roll.rs

@@ -0,0 +1,11 @@
+use crate::*;
+
+impl Die {
+    pub fn roll(&self) -> u16 {
+        let mut rng = rand::rng();
+        rng.random_range(0..self.sides)
+    }
+}
+
+// #[cfg(test)]
+// mod unit_tests { use super::*; }

01.workspace/oxydice_lib/src/imp/mod.rs

@@ -1 +1,3 @@
 pub mod dice_grab;
+pub mod dice_roll;
+pub mod die_roll;

01.workspace/oxydice_lib/src/lib.rs

@@ -1,5 +1,7 @@
 use std::*;
 
+use rand::*;
+
 mod fun;
 mod imp;
 mod mcr;

01.workspace/oxydice_lib/src/str/dice.rs

@@ -3,6 +3,7 @@ use crate::*;
 #[derive(Debug, Default, PartialEq, Clone)]
 pub struct O {
     pub(crate) handful: Vec<Die>,
+    pub(crate) roll_results: Vec<u16>,
 }
 
 // impl std::fmt::Display for O {

01.workspace/oxydice_lib/src/tst/dice_roll.rs

@@ -0,0 +1,17 @@
+#[cfg(test)]
+mod tests {
+    use crate::*;
+    #[test]
+    pub fn roll_should_yield_correct_number_or_results() {
+        let mut dice = Dice::grab(3, 6);
+        dice.roll();
+        assert_eq!(dice.roll_results.len(), 3);
+    }
+    #[test]
+    fn reroll_should_yield_correct_number_of_results() {
+        let mut dice = Dice::grab(3, 6);
+        dice.roll();
+        dice.roll();
+        assert_eq!(dice.roll_results.len(), 3);
+    }
+}

01.workspace/oxydice_lib/src/tst/die_roll.rs

@@ -0,0 +1,11 @@
+#[cfg(test)]
+mod tests {
+    use crate::*;
+    #[test]
+    pub fn die_roll_should_always_stay_inside_range() {
+        let die = Die::new(6);
+        for _ in 1..=10000 {
+            assert!(die.roll() < 6);
+        }
+    }
+}

01.workspace/oxydice_lib/src/tst/mod.rs

@@ -1 +1,3 @@
 pub mod dice_grab;
+pub mod die_roll;
+pub mod dice_roll;