common 정렬 헬퍼 공통화 및 devfront 목록 정렬 추가

adminfront/src/lib/sort.test.ts

@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+import {
+  compareNullableValues,
+  sortItems,
+  toggleSort,
+  type SortConfig,
+} from "../../../common/core/utils";
+
+describe("shared sort helpers", () => {
+  it("toggles sort direction for the same key", () => {
+    expect(toggleSort<string>(null, "name")).toEqual({
+      key: "name",
+      direction: "asc",
+    });
+
+    expect(
+      toggleSort<string>({ key: "name", direction: "asc" }, "name"),
+    ).toEqual({
+      key: "name",
+      direction: "desc",
+    });
+
+    expect(
+      toggleSort<string>({ key: "name", direction: "desc" }, "status"),
+    ).toEqual({
+      key: "status",
+      direction: "asc",
+    });
+  });
+
+  it("compares nullable values with nulls last", () => {
+    expect(compareNullableValues("a", "b", "asc")).toBeLessThan(0);
+    expect(compareNullableValues("a", "b", "desc")).toBeGreaterThan(0);
+    expect(compareNullableValues(null, "b", "asc")).toBeGreaterThan(0);
+    expect(compareNullableValues("b", null, "asc")).toBeLessThan(0);
+  });
+
+  it("sorts items with resolver maps", () => {
+    const items = [
+      {
+        id: "2",
+        name: "Beta",
+        metadata: { score: 2 },
+      },
+      {
+        id: "3",
+        name: "gamma",
+        metadata: {},
+      },
+      {
+        id: "1",
+        name: "alpha",
+        metadata: { score: 1 },
+      },
+    ];
+
+    const nameSort: SortConfig<"name"> = { key: "name", direction: "asc" };
+    expect(sortItems(items, nameSort).map((item) => item.id)).toEqual([
+      "1",
+      "2",
+      "3",
+    ]);
+
+    const scoreSort: SortConfig<"score"> = { key: "score", direction: "asc" };
+    expect(
+      sortItems(items, scoreSort, {
+        score: (item) =>
+          typeof item.metadata.score === "number" ? item.metadata.score : null,
+      }).map((item) => item.id),
+    ).toEqual(["1", "2", "3"]);
+  });
+});