feat: Adds equivalent length database tests.

Tests/DatabaseClientTests/EquivalentLengthTests.swift

@@ -0,0 +1,79 @@
+import DatabaseClient
+import Dependencies
+import Foundation
+import ManualDCore
+import Testing
+
+@Suite
+struct EquivalentLengthTests {
+
+  @Test
+  func happyPath() async throws {
+    try await withTestUserAndProject { user, project in
+      @Dependency(\.database.equivalentLengths) var equivalentLengths
+
+      let equivalentLength = try await equivalentLengths.create(
+        .init(
+          projectID: project.id,
+          name: "Test",
+          type: .supply,
+          straightLengths: [10],
+          groups: [
+            .init(group: 1, letter: "a", value: 20),
+            .init(group: 2, letter: "a", value: 30, quantity: 2),
+          ]
+        )
+      )
+
+      let fetched = try await equivalentLengths.fetch(project.id)
+      #expect(fetched == [equivalentLength])
+
+      let got = try await equivalentLengths.get(equivalentLength.id)
+      #expect(got == equivalentLength)
+
+      var max = try await equivalentLengths.fetchMax(project.id)
+      #expect(max.supply == equivalentLength)
+      #expect(max.return == nil)
+
+      let returnLength = try await equivalentLengths.create(
+        .init(
+          projectID: project.id,
+          name: "Test",
+          type: .return,
+          straightLengths: [10],
+          groups: [
+            .init(group: 1, letter: "a", value: 20),
+            .init(group: 2, letter: "a", value: 30, quantity: 2),
+          ]
+        )
+      )
+      max = try await equivalentLengths.fetchMax(project.id)
+      #expect(max.supply == equivalentLength)
+      #expect(max.return == returnLength)
+
+      let updated = try await equivalentLengths.update(
+        equivalentLength.id, .init(name: "Supply Test")
+      )
+      #expect(updated.name == "Supply Test")
+      #expect(updated.id == equivalentLength.id)
+
+      try await equivalentLengths.delete(equivalentLength.id)
+
+    }
+  }
+
+  @Test
+  func notFound() async throws {
+    try await withDatabase {
+      @Dependency(\.database.equivalentLengths) var equivalentLengths
+
+      await #expect(throws: NotFoundError.self) {
+        try await equivalentLengths.delete(UUID(0))
+      }
+
+      await #expect(throws: NotFoundError.self) {
+        try await equivalentLengths.update(UUID(0), .init())
+      }
+    }
+  }
+}