forked from Yara724/api
132 lines
3.6 KiB
TypeScript
132 lines
3.6 KiB
TypeScript
import { PlateNormalizerService, normalizePlateText } from "./plate-normalizer.service";
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describe("normalizePlateText (pure function)", () => {
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it("returns unchanged text for a clean plate letter", () => {
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expect(normalizePlateText("ه")).toBe("ه");
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expect(normalizePlateText("الف")).toBe("الف");
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});
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it("strips Zero-Width Joiner (U+200D)", () => {
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// ه + ZWJ — the exact scenario from the issue
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const input = "ه\u200D";
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expect(normalizePlateText(input)).toBe("ه");
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});
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it("strips Zero-Width Non-Joiner (U+200C)", () => {
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expect(normalizePlateText("ه\u200C")).toBe("ه");
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});
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it("strips Left-to-Right Mark (U+200E)", () => {
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expect(normalizePlateText("ه\u200E")).toBe("ه");
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});
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it("strips Right-to-Left Mark (U+200F)", () => {
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expect(normalizePlateText("ه\u200F")).toBe("ه");
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});
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it("strips BOM (U+FEFF)", () => {
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expect(normalizePlateText("\uFEFFه")).toBe("ه");
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});
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it("converts Arabic ي (U+064A) to Persian ی (U+06CC)", () => {
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expect(normalizePlateText("\u064A")).toBe("\u06CC");
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});
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it("does not alter already-Persian ی (U+06CC)", () => {
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expect(normalizePlateText("\u06CC")).toBe("\u06CC");
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});
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it("handles a full plate string: 339ه\u200D77 → 339ه77", () => {
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expect(normalizePlateText("339ه\u200D77")).toBe("339ه77");
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});
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it("handles multiple invisible chars interleaved", () => {
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const input = "\u200F339\u200Cه\u200D\uFEFF77\u200E";
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expect(normalizePlateText(input)).toBe("339ه77");
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});
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it("trims whitespace", () => {
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expect(normalizePlateText(" ه ")).toBe("ه");
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});
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it("applies NFKC normalization", () => {
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// Full-width digit ３ (U+FF13) → ASCII 3
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expect(normalizePlateText("３")).toBe("3");
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});
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it("returns empty string for empty input", () => {
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expect(normalizePlateText("")).toBe("");
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});
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});
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describe("PlateNormalizerService", () => {
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let service: PlateNormalizerService;
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beforeEach(() => {
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service = new PlateNormalizerService();
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});
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describe("normalizePlateText", () => {
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it("delegates to the pure function", () => {
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expect(service.normalizePlateText("ه\u200D")).toBe("ه");
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});
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});
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describe("resolvePlateLetterCode", () => {
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const PLATE_LETTER_MAP: Record<string, number> = {
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"\u0627\u0644\u0641": 1, // الف
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"\u0628": 2,
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"\u067E": 3,
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"\u062C": 4,
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"\u062F": 5,
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"\u0633": 6,
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"\u0635": 7,
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"\u0637": 8,
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"\u0639": 9,
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"\u0642": 10,
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"\u0644": 11,
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"\u0645": 12,
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"\u0646": 13,
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"\u0648": 14,
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"\u0647": 15, // ه
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"\u06CC": 16, // ی
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"\u06A9": 17,
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"\u0698": 18,
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"\u062A": 19,
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"\u062B": 20,
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"\u0632": 21,
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"\u0634": 22,
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"\u0641": 23,
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"\u06AF": 24,
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};
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it("returns 15 for clean ه", () => {
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expect(service.resolvePlateLetterCode("ه", PLATE_LETTER_MAP)).toBe(15);
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});
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it("returns 15 for ه + ZWJ (the bug scenario)", () => {
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expect(service.resolvePlateLetterCode("ه\u200D", PLATE_LETTER_MAP)).toBe(
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15,
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);
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});
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it("returns 16 for Arabic ي (mapped to Persian ی)", () => {
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expect(
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service.resolvePlateLetterCode("\u064A", PLATE_LETTER_MAP),
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).toBe(16);
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});
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it("returns null for an unknown letter and logs it", () => {
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const spy = jest.spyOn(
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(service as any).logger,
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"debug",
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);
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expect(service.resolvePlateLetterCode("؟", PLATE_LETTER_MAP)).toBeNull();
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expect(spy).toHaveBeenCalledWith(
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expect.stringContaining("Unknown plate letter"),
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);
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spy.mockRestore();
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});
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});
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});
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