changes

crates/domain/tests/metric/daily_metric_test.rs

@@ -0,0 +1,53 @@
+use domain::entry::Date;
+use domain::metric::{DailyMetric, MetricValue, Source, Steps};
+use domain::provider::ProviderName;
+use domain::user::UserId;
+
+fn a_date() -> Date {
+    Date::from_persistence("2026-08-26".parse().unwrap())
+}
+
+fn steps(count: u32, source: Source) -> DailyMetric {
+    DailyMetric::new(
+        UserId::generate(),
+        a_date(),
+        MetricValue::Steps(Steps::new(count).unwrap()),
+        source,
+    )
+}
+
+fn a_provider() -> Source {
+    Source::Provider(ProviderName::new("healthkit").unwrap())
+}
+
+#[test]
+fn a_manual_count_supersedes_one_a_provider_reported() {
+    let manual = steps(8_412, Source::Manual);
+    let imported = steps(8_000, a_provider());
+
+    assert!(manual.supersedes(&imported));
+}
+
+#[test]
+fn a_provider_does_not_overwrite_a_count_the_user_stated() {
+    let manual = steps(8_412, Source::Manual);
+    let imported = steps(8_000, a_provider());
+
+    assert!(!imported.supersedes(&manual));
+}
+
+#[test]
+fn a_later_import_replaces_an_earlier_one() {
+    let earlier = steps(8_000, a_provider());
+    let later = steps(8_412, a_provider());
+
+    assert!(later.supersedes(&earlier));
+}
+
+#[test]
+fn a_correction_replaces_the_count_the_user_stated_before() {
+    let stated = steps(8_000, Source::Manual);
+    let corrected = steps(8_412, Source::Manual);
+
+    assert!(corrected.supersedes(&stated));
+}