feat(categories): kategori ağacı, varsayılan Türkçe set ve yönetim ekranı

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/features/categories/tree.test.ts

@@ -0,0 +1,121 @@
+import { describe, expect, it } from "vitest";
+import {
+  ancestorIds,
+  buildTree,
+  checkCreate,
+  checkMove,
+  descendantIds,
+  rollupTotals,
+  toOptions,
+  type FlatCategory,
+} from "./tree";
+
+const c = (
+  id: string,
+  name: string,
+  parentId: string | null,
+  order = 0,
+  kind: "expense" | "income" = "expense",
+): FlatCategory => ({
+  id,
+  kind,
+  name,
+  parentId,
+  order,
+  archived: false,
+});
+
+const items: FlatCategory[] = [
+  c("fat", "Faturalar", null, 1),
+  c("elk", "Elektrik", "fat", 0),
+  c("su", "Su", "fat", 1),
+  c("mar", "Market", null, 0),
+  c("gida", "Gıda", "mar", 0),
+  c("meyve", "Meyve", "gida", 0),
+  c("maas", "Maaş", null, 0, "income"),
+];
+
+describe("buildTree / toOptions", () => {
+  it("sıra ve derinlikle ağaç kurar, yol etiketleri üretir", () => {
+    const tree = buildTree(items.filter((i) => i.kind === "expense"));
+    expect(tree.map((n) => n.name)).toEqual(["Market", "Faturalar"]);
+    expect(toOptions(tree).map((o) => [o.path, o.depth])).toEqual([
+      ["Market", 0],
+      ["Market › Gıda", 1],
+      ["Market › Gıda › Meyve", 2],
+      ["Faturalar", 0],
+      ["Faturalar › Elektrik", 1],
+      ["Faturalar › Su", 1],
+    ]);
+  });
+
+  it("arşivlenenleri varsayılan olarak seçeneklere koymaz", () => {
+    const tree = buildTree([c("a", "A", null), { ...c("b", "B", "a"), archived: true }]);
+    expect(toOptions(tree).map((o) => o.id)).toEqual(["a"]);
+    expect(toOptions(tree, { includeArchived: true }).map((o) => o.id)).toEqual(["a", "b"]);
+  });
+
+  it("üstü olmayan düğümü köke alır, döngüde takılmaz", () => {
+    const loop = [c("x", "X", "y"), c("y", "Y", "x"), c("z", "Z", "yok")];
+    expect(() => buildTree(loop)).not.toThrow();
+    expect(buildTree(loop).map((n) => n.id)).toContain("z");
+  });
+});
+
+describe("ancestorIds / descendantIds", () => {
+  it("üst ve alt kategorileri bulur", () => {
+    expect(ancestorIds(items, "meyve")).toEqual(["mar", "gida"]);
+    expect(descendantIds(items, "mar").sort()).toEqual(["gida", "meyve"]);
+    expect(descendantIds(items, "elk")).toEqual([]);
+  });
+});
+
+describe("checkMove", () => {
+  it("kendine, alt kategorisine ve farklı türe taşımayı reddeder", () => {
+    expect(checkMove(items, "mar", "mar")).toBe("self");
+    expect(checkMove(items, "mar", "meyve")).toBe("descendant");
+    expect(checkMove(items, "elk", "maas")).toBe("kind");
+    expect(checkMove(items, "elk", "yok")).toBe("parentNotFound");
+  });
+
+  it("geçerli taşımaya ve köke taşımaya izin verir", () => {
+    expect(checkMove(items, "su", "mar")).toBeNull();
+    expect(checkMove(items, "gida", null)).toBeNull();
+  });
+
+  it("derinlik sınırını uygular (en fazla 5 seviye: derinlik 0–4)", () => {
+    const deep = [
+      c("1", "1", null),
+      c("2", "2", "1"),
+      c("3", "3", "2"),
+      c("4", "4", "3"),
+      c("5", "5", "4"),
+      c("x", "X", null),
+      c("y", "Y", "x"),
+    ];
+    expect(checkCreate(deep, "expense", "4")).toBeNull(); // yeni düğüm derinlik 4
+    expect(checkCreate(deep, "expense", "5")).toBe("depth"); // derinlik 5
+    expect(checkMove(deep, "y", "4")).toBeNull();
+    expect(checkMove(deep, "y", "5")).toBe("depth");
+    expect(checkMove(deep, "x", "4")).toBe("depth"); // x derinlik 4, alt kategorisi y derinlik 5
+    expect(checkCreate(deep, "income", "3")).toBe("kind");
+  });
+});
+
+describe("rollupTotals", () => {
+  it("alt kategori tutarlarını üst kategorilere toplar", () => {
+    const totals = rollupTotals(
+      items,
+      new Map([
+        ["meyve", 300],
+        ["gida", 500],
+        ["elk", 1000],
+        ["su", 250],
+      ]),
+    );
+    expect(totals.get("mar")).toBe(800);
+    expect(totals.get("gida")).toBe(800);
+    expect(totals.get("fat")).toBe(1250);
+    expect(totals.get("maas") ?? 0).toBe(0);
+  });
+});