test: add unit tests generated by ToTheos

__mocks__/cloudflare-sockets.js

@@ -0,0 +1,15 @@
+// Mock for cloudflare:sockets module
+module.exports = {
+  connect: jest.fn(() => ({
+    readable: {
+      pipeTo: jest.fn(),
+    },
+    writable: {
+      getWriter: () => ({
+        write: jest.fn(),
+        releaseLock: jest.fn(),
+      }),
+    },
+    startTls: jest.fn(),
+  })),
+};

jest.config.js

@@ -0,0 +1,14 @@
+const { createDefaultPreset } = require("ts-jest");
+
+const tsJestTransformCfg = createDefaultPreset().transform;
+
+/** @type {import("jest").Config} **/
+module.exports = {
+  testEnvironment: "node",
+  transform: {
+    ...tsJestTransformCfg,
+  },
+  moduleNameMapper: {
+    '^cloudflare:sockets$': '<rootDir>/__mocks__/cloudflare-sockets.js',
+  },
+};