feat: simplify testing structure into api and e2e categories

__tests__/api/features.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "bun:test";
+import { getEnv } from "@/utils/env";
+
+describe("Feature Utilities", () => {
+	describe("getEnv Utility", () => {
+		it("should return default value if env is not found", () => {
+			const val = getEnv("NON_EXISTENT_KEY", "fallback");
+			expect(val).toBe("fallback");
+		});
+
+		it("should return value from process.env if available", () => {
+			// Mock process.env
+			const originalEnv = { ...process.env };
+			process.env.TEST_ENV_KEY = "test-value";
+
+			const val = getEnv("TEST_ENV_KEY");
+			expect(val).toBe("test-value");
+
+			// Clean up
+			delete process.env.TEST_ENV_KEY;
+		});
+	});
+});