domain: add Storage & Sources entities (StorageVolume, LibraryPath, IngestSession, Quota)

crates/domain/tests/entities/quota.rs

@@ -0,0 +1,17 @@
+use domain::entities::{QuotaDefinition, TimePeriod, UsageType};
+use domain::value_objects::SystemId;
+
+#[test]
+fn quota_with_rules() {
+    let mut q = QuotaDefinition::new(SystemId::new());
+    assert!(q.is_enforced);
+    assert!(q.rules.is_empty());
+
+    q.add_rule(UsageType::StorageBytes, 1_000_000, TimePeriod::Monthly);
+    q.add_unlimited_rule(UsageType::ApiCalls);
+
+    assert_eq!(q.rules.len(), 2);
+    assert!(!q.rules[0].is_unlimited);
+    assert_eq!(q.rules[0].limit_value, 1_000_000);
+    assert!(q.rules[1].is_unlimited);
+}