Expand integration suite to cover all months of 2026, minor refactorings

src-tauri/src/config.rs

@@ -104,6 +104,18 @@ impl UserConfig {
         self
     }
 
+    pub fn update_month(&mut self, month: u8) {
+        self.month = Month::try_from(month).unwrap();
+
+        self.total_days = self.month.num_days(self.year).unwrap();
+
+        self.total_slots = (1..=self.total_days)
+            .map(|d| if Day(d).is_open_shift() { 2 } else { 1 })
+            .sum();
+
+        self.total_holiday_slots = self.total_holiday_slots()
+    }
+
     fn total_holiday_slots(&self) -> u8 {
         (1..=self.total_days)
             .filter(|&d| self.is_holiday_or_weekend(Day(d)))
@@ -212,7 +224,7 @@ impl TryFrom<UserConfigDTO> for UserConfig {
 #[cfg(test)]
 mod tests {
     use crate::{
-        config::UserConfig,
+        config::{ToxicPair, UserConfig},
         fixtures::complex_config,
         schedule::ShiftType,
         slot::{Day, ShiftPosition, Slot},
@@ -248,4 +260,18 @@ mod tests {
         assert!(complex_config.is_holiday_or_weekend_slot(sun));
         assert!(complex_config.is_holiday_or_weekend_slot(manual_holiday));
     }
+
+    #[rstest]
+    fn test_toxic_pair_matches() {
+        let pair_1 = ToxicPair::new(1, 2);
+        let pair_1_r = ToxicPair::new(2, 1);
+        let pair_2 = ToxicPair::new(3, 1);
+
+        assert!(pair_1.matches(&pair_1_r));
+        assert!(pair_1_r.matches(&pair_1));
+        assert!(!pair_1.matches(&pair_2));
+        assert!(!pair_2.matches(&pair_1));
+        assert!(!pair_1_r.matches(&pair_2));
+        assert!(!pair_2.matches(&pair_1_r));
+    }
 }