Add CLI and infra test coverage

src/logger.test.ts

@@ -0,0 +1,34 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { setVerbose } from "./globals.js";
+import { logDebug, logError, logInfo, logSuccess, logWarn } from "./logger.js";
+import type { RuntimeEnv } from "./runtime.js";
+
+describe("logger helpers", () => {
+	it("formats messages through runtime log/error", () => {
+		const log = vi.fn();
+		const error = vi.fn();
+		const runtime: RuntimeEnv = { log, error, exit: vi.fn() };
+
+		logInfo("info", runtime);
+		logWarn("warn", runtime);
+		logSuccess("ok", runtime);
+		logError("bad", runtime);
+
+		expect(log).toHaveBeenCalledTimes(3);
+		expect(error).toHaveBeenCalledTimes(1);
+	});
+
+	it("only logs debug when verbose is enabled", () => {
+		const logVerbose = vi.spyOn(console, "log");
+		setVerbose(false);
+		logDebug("quiet");
+		expect(logVerbose).not.toHaveBeenCalled();
+
+		setVerbose(true);
+		logVerbose.mockClear();
+		logDebug("loud");
+		expect(logVerbose).toHaveBeenCalled();
+		logVerbose.mockRestore();
+	});
+});