Add CLI and infra test coverage

src/cli/prompt.test.ts

@@ -0,0 +1,49 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { isYes, setVerbose, setYes } from "../globals.js";
+
+vi.mock("node:readline/promises", () => {
+	const question = vi.fn<[], Promise<string>>();
+	const close = vi.fn();
+	const createInterface = vi.fn(() => ({ question, close }));
+	return { default: { createInterface } };
+});
+
+type ReadlineMock = {
+	default: {
+		createInterface: () => {
+			question: ReturnType<typeof vi.fn<[], Promise<string>>>;
+			close: ReturnType<typeof vi.fn>;
+		};
+	};
+};
+
+const { promptYesNo } = await import("./prompt.js");
+const readline = (await import("node:readline/promises")) as ReadlineMock;
+
+describe("promptYesNo", () => {
+	it("returns true when global --yes is set", async () => {
+		setYes(true);
+		setVerbose(false);
+		const result = await promptYesNo("Continue?");
+		expect(result).toBe(true);
+		expect(isYes()).toBe(true);
+	});
+
+	it("asks the question and respects default", async () => {
+		setYes(false);
+		setVerbose(false);
+		const { question: questionMock } = readline.default.createInterface();
+		questionMock.mockResolvedValueOnce("");
+		const resultDefaultYes = await promptYesNo("Continue?", true);
+		expect(resultDefaultYes).toBe(true);
+
+		questionMock.mockResolvedValueOnce("n");
+		const resultNo = await promptYesNo("Continue?", true);
+		expect(resultNo).toBe(false);
+
+		questionMock.mockResolvedValueOnce("y");
+		const resultYes = await promptYesNo("Continue?", false);
+		expect(resultYes).toBe(true);
+	});
+});