Reorder circuit groups

tests/circuit-group-numbering.test.ts

@@ -16,6 +16,7 @@ import "./circuit-group-move-project-command.repository.test.js";
 import "./circuit-group-subtree-snapshot.test.js";
 import "./circuit-group-subtree-project-command.repository.test.js";
 import {
+  buildCircuitGroupReorderAssignments,
   buildNewCircuitGroupSnapshot,
   canDeleteCircuitGroup,
   renameCircuitGroupSnapshot,
@@ -69,6 +70,54 @@ describe("circuit group numbering", () => {
     );
   });
 
+  it("reorders complete group lists only between category peers", () => {
+    const sections = [
+      groupSection("lighting-1", "lighting", 1, 10),
+      groupSection("lighting-2", "lighting", 2, 15),
+      groupSection("single-1", "single_phase", 1, 20),
+    ];
+    assert.deepEqual(
+      buildCircuitGroupReorderAssignments(
+        sections,
+        "lighting-1",
+        1
+      ),
+      [
+        {
+          groupId: "lighting-1",
+          expectedSortOrder: 10,
+          targetSortOrder: 15,
+        },
+        {
+          groupId: "lighting-2",
+          expectedSortOrder: 15,
+          targetSortOrder: 10,
+        },
+        {
+          groupId: "single-1",
+          expectedSortOrder: 20,
+          targetSortOrder: 20,
+        },
+      ]
+    );
+    assert.equal(
+      buildCircuitGroupReorderAssignments(
+        sections,
+        "lighting-1",
+        -1
+      ),
+      null
+    );
+    assert.equal(
+      buildCircuitGroupReorderAssignments(
+        sections,
+        "single-1",
+        1
+      ),
+      null
+    );
+  });
+
   it("formats the agreed identifiers including the leading hyphen", () => {
     assert.equal(
       formatGroupUpstreamProtectionIdentifier("lighting", 1),