test: improve tests by using testcontainers

Before, we assume that the host/dev env
had a zerotier-one service running.

Now we can start a container and use the
zerotier-one in there, and then throw it away.

test/integration.test.ts

@@ -1,7 +1,8 @@
 import { readFileSync } from "node:fs";
-import { describe, it } from "node:test";
+import { describe, it, before } from "node:test";
 import assert from "node:assert";
 
+import { GenericContainer } from "testcontainers";
 import createClient from "openapi-fetch";
 import { PathsWithMethod } from "openapi-typescript-helpers";
 import type { paths } from "/tmp/schema.ts"; // generated by openapi-typescript
@@ -13,18 +14,16 @@ import { AnyValidateFunction } from "ajv/dist/core.js";
 const Ajv = _Ajv.default;
 const addFormats = _addFormats.default;
 
-if (!process.env.AUTH_TOKEN) {
-  console.error("No AUTH_TOKEN env var set. Exiting.");
-  process.exit(1);
-}
+const ZT_VERSION = process.env.ZT_VERSION || "1.12.2"
 
-const isNextApiVersion = process.env.ENABLE_UNSTABLE;
+function compareVersions(a: string, b: string) {
+  return a.localeCompare(b, undefined, { numeric: true, sensitivity: 'base' })
+}
 
-function createCreateClient() {
-  // AUTH_TOKEN=`cat ~/Library/Application\ Support/ZeroTier/One/authtoken.secret ` npm t
-  const authToken = process.env.AUTH_TOKEN;
+function createCreateClient(token: string, port: number) {
+  const authToken = token;
   const client = createClient<paths>({
-    baseUrl: "http://localhost:9993/",
+    baseUrl: `http://localhost:${port}/`,
     headers: { "X-ZT1-AUTH": authToken },
   });
 
@@ -59,32 +58,51 @@ function assertValid(
   }
 }
 
-describe("GET endpoints", async function () {
-  const map: { path: PathsWithMethod<paths, "get">; id: string }[] = [
-    { path: "/status", id: "NodeStatus" },
-    { path: "/controller", id: "ControllerStatus" },
-    { path: "/network", id: "JoinedNetworks" },
-    { path: "/peer", id: "Peers" },
-  ];
+const ZEROTIER_API_SECRET = "asdf";
 
-  for (const { path, id } of map) {
-    it(id, async () => {
-      const validator = createValidator(id);
+describe("API exercise", async function() {
+  let network_id: string;
+  const node_id = "1122334455";
+  let container;
+  let client: ReturnType<typeof createCreateClient>;
+  let apiPort: number;
+
+  before(async () => {
+    container = await new GenericContainer(`zerotier/zerotier:${ZT_VERSION}`)
+      .withExposedPorts(9993)
+      .withPrivilegedMode()
+      .withAddedCapabilities("NET_ADMIN")
+      .withEnvironment({ ZEROTIER_API_SECRET })
+      .withCopyContentToContainer([
+        {
+          content: `{ "settings": { "allowManagementFrom": ["0.0.0.0/0"] } }`,
+          target: "/var/lib/zerotier-one/local.conf",
+        },
+      ])
+      .start();
+    apiPort = container.getMappedPort(9993);
+    client = createCreateClient(ZEROTIER_API_SECRET, apiPort);
+  });
 
-      const client = createCreateClient();
+  describe("GET endpoints", async function() {
+    const map: { path: PathsWithMethod<paths, "get">; id: string }[] = [
+      { path: "/status", id: "NodeStatus" },
+      { path: "/controller", id: "ControllerStatus" },
+      { path: "/network", id: "JoinedNetworks" },
+      { path: "/peer", id: "Peers" },
+    ];
 
-      const { data } = await client.GET(path, {});
-      assert.ok(data);
+    for (const { path, id } of map) {
+      it(id, async () => {
+        const validator = createValidator(id);
 
-      assertValid(validator, data);
-    });
-  }
-});
+        const { data } = await client.GET(path, {});
+        assert.ok(data);
 
-describe("API exercise", async function () {
-  const client = createCreateClient();
-  let network_id: string;
-  const node_id = "1122334455";
+        assertValid(validator, data);
+      });
+    }
+  });
 
   it("Creates a valid controller network", async () => {
     const { data: networkData } = await client.POST("/controller/network", {
@@ -212,7 +230,7 @@ describe("API exercise", async function () {
     });
   });
 
-  describe("Unstable APIs", { skip: !isNextApiVersion }, async () => {
+  describe("Unstable APIs", { skip: compareVersions(ZT_VERSION, "1.12.2") !== 1 }, async () => {
     it("Sets the member name", async () => {
       const { data } = await client.POST(
         "/controller/network/{network_id}/member/{node_id}",
@@ -265,12 +283,12 @@ describe("API exercise", async function () {
     });
   });
 
-  // it("Deletes the network by ID", async () => {
-  //   const { data } = await client.DELETE(
-  //     "/controller/network/{network_id}",
-  //     { params: { path: { network_id } } },
-  //   );
-  //     const networkDelValidator = createValidator("ControllerNetwork");
-  //     assertValid(networkDelValidator, data);
-  // });
+  it("Deletes the network by ID", async () => {
+    const { data } = await client.DELETE(
+      "/controller/network/{network_id}",
+      { params: { path: { network_id } } },
+    );
+    const networkDelValidator = createValidator("ControllerNetwork");
+    assertValid(networkDelValidator, data);
+  });
 });