test: add unit tests for buildTransmittedPdfData

Cover the declaration lookup + CSE/joint eval queries to fix the
SonarCloud coverage quality gate (was 57.7%, required >= 60%).

Author: Viczei

packages/app/src/modules/declarationPdf/__tests__/buildTransmittedPdfData.test.ts

@@ -0,0 +1,134 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("server-only", () => ({}));
+
+const mockLimit = vi.fn();
+const mockWhere = vi.fn();
+const mockFrom = vi.fn();
+const mockSelect = vi.fn();
+
+let selectCallCount = 0;
+
+vi.mock("~/server/db", () => ({
+	db: {
+		select: (...args: unknown[]) => mockSelect(...args),
+	},
+}));
+
+describe("buildTransmittedPdfData", () => {
+	beforeEach(() => {
+		vi.resetAllMocks();
+		selectCallCount = 0;
+	});
+
+	function setupMockDb(
+		company: Record<string, unknown> | null,
+		declaration: Record<string, unknown> | null,
+		opinions: unknown[] = [],
+		cseFiles: unknown[] = [],
+		jointFiles: unknown[] = [],
+	) {
+		// 5 select calls:
+		// 1) company, 2) declaration (parallel Promise.all)
+		// 3) opinions, 4) cseFiles, 5) jointFiles (parallel Promise.all)
+		const results = [
+			company ? [company] : [],
+			declaration ? [declaration] : [],
+			opinions,
+			cseFiles,
+			jointFiles,
+		];
+
+		mockLimit.mockImplementation(() => {
+			return Promise.resolve(results[selectCallCount - 1] ?? []);
+		});
+		mockWhere.mockImplementation(() => {
+			const res = results[selectCallCount - 1] ?? [];
+			return Object.assign(Promise.resolve(res), { limit: mockLimit });
+		});
+		mockFrom.mockReturnValue({ where: mockWhere });
+		mockSelect.mockImplementation(() => {
+			selectCallCount++;
+			return { from: mockFrom };
+		});
+	}
+
+	it("returns assembled PDF data with declaration lookup", async () => {
+		setupMockDb(
+			{ name: "ACME Corp", siren: "123456789" },
+			{ id: "decl-1" },
+			[
+				{
+					declarationNumber: 1,
+					type: "accuracy",
+					opinion: "favorable",
+					opinionDate: "2026-01-15",
+					gapConsulted: null,
+				},
+			],
+			[{ fileName: "avis.pdf", uploadedAt: new Date("2026-03-01") }],
+			[{ fileName: "eval.pdf", uploadedAt: new Date("2026-03-02") }],
+		);
+
+		const { buildTransmittedPdfData } = await import(
+			"../buildTransmittedPdfData"
+		);
+		const result = await buildTransmittedPdfData(
+			"123456789",
+			new Date("2026-03-15"),
+		);
+
+		expect(result.companyName).toBe("ACME Corp");
+		expect(result.siren).toBe("123456789");
+		expect(result.opinions).toHaveLength(1);
+		expect(result.cseFiles).toHaveLength(1);
+		expect(result.jointEvaluationFile).not.toBeNull();
+		expect(result.jointEvaluationFile?.fileName).toBe("eval.pdf");
+	});
+
+	it("throws when company is not found", async () => {
+		setupMockDb(null, { id: "decl-1" });
+
+		const { buildTransmittedPdfData } = await import(
+			"../buildTransmittedPdfData"
+		);
+
+		await expect(
+			buildTransmittedPdfData("999999999", new Date()),
+		).rejects.toThrow("Entreprise introuvable");
+	});
+
+	it("throws when declaration is not found", async () => {
+		setupMockDb({ name: "ACME", siren: "123456789" }, null);
+
+		const { buildTransmittedPdfData } = await import(
+			"../buildTransmittedPdfData"
+		);
+
+		await expect(
+			buildTransmittedPdfData("123456789", new Date()),
+		).rejects.toThrow("Déclaration introuvable");
+	});
+
+	it("returns null jointEvaluationFile when none exists", async () => {
+		setupMockDb(
+			{ name: "ACME", siren: "123456789" },
+			{ id: "decl-1" },
+			[],
+			[],
+			[],
+		);
+
+		const { buildTransmittedPdfData } = await import(
+			"../buildTransmittedPdfData"
+		);
+		const result = await buildTransmittedPdfData(
+			"123456789",
+			new Date("2026-03-15"),
+		);
+
+		expect(result.opinions).toEqual([]);
+		expect(result.cseFiles).toEqual([]);
+		expect(result.jointEvaluationFile).toBeNull();
+	});
+});