Cloudflare Workers test support with Miniflare

Implement comprehensive test environment setup for Cloudflare Workers using
Miniflare, enabling cross-runtime testing compatibility.  Add new cfworkers
directory with client/server test infrastructure and update existing test
files to use fetch-mock for better portability.

Author: dahlia

cspell.json

@@ -13,6 +13,7 @@
     "btos",
     "callouts",
     "cfworker",
+    "cfworkers",
     "codegen",
     "compactable",
     "cryptosuite",

fedify/.gitignore

@@ -3,6 +3,12 @@
 .dnt-import-map.json
 .test-report.xml
 apidoc/
+cfworkers/dist/
+cfworkers/fixtures/
+cfworkers/imports.ts
+cfworkers/README.md
+cfworkers/server.js
+cfworkers/server.js.map
 coverage/
 dist/
 fedify-fedify-*.tgz

fedify/cfworkers/client.ts

@@ -0,0 +1,72 @@
+import { Miniflare } from "miniflare";
+import { join } from "node:path";
+import process from "node:process";
+import { styleText } from "node:util";
+
+const filters = process.argv.slice(2).map((f) => f.toLowerCase());
+
+const mf = new Miniflare({
+  // @ts-ignore: scriptPath is not recognized in the type definitions
+  scriptPath: join(import.meta.dirname ?? ".", "server.js"),
+  modules: [
+    { type: "ESModule", path: join(import.meta.dirname ?? ".", "server.js") },
+  ],
+  async outboundService(request: Request) {
+    const url = new URL(request.url);
+    if (url.hostname.endsWith(".test")) {
+      const host = url.hostname.slice(0, -5);
+      try {
+        const { default: document } = await import(
+          "../testing/fixtures/" + host + url.pathname + ".json"
+        );
+        return new Response(JSON.stringify(document), {
+          headers: {
+            "Content-Type": "application/json",
+          },
+        });
+      } catch (e) {
+        return new Response(String(e), { status: 404 });
+      }
+    }
+    return await fetch(request);
+  },
+  compatibilityDate: "2025-05-23",
+  compatibilityFlags: ["nodejs_compat"],
+});
+const url = await mf.ready;
+const response = await mf.dispatchFetch(url);
+const tests = await response.json() as string[];
+let passed = 0;
+let failed = 0;
+let skipped = 0;
+for (const test of tests) {
+  const testLower = test.toLowerCase();
+  if (filters.length > 0 && !filters.some((f) => testLower.includes(f))) {
+    continue;
+  }
+  const resp = await mf.dispatchFetch(url, {
+    method: "POST",
+    body: test,
+    headers: { "Content-Type": "text/plain" },
+  });
+  if (resp.ok) {
+    console.log(styleText("green", `PASS: ${test}`));
+    passed++;
+  } else if (resp.status === 404) {
+    console.log(styleText("yellow", `SKIP: ${test}`));
+    skipped++;
+  } else {
+    const text = await resp.text();
+    console.log(styleText("red", `FAIL: ${test}`));
+    console.log(text);
+    failed++;
+  }
+}
+await mf.dispose();
+console.log(
+  `Tests completed: ${styleText("green", `${passed} passed`)}, ${
+    styleText("red", `${failed} failed`)
+  }, ${styleText("yellow", `${skipped} skipped`)}.`,
+);
+
+// cSpell: ignore Miniflare

fedify/cfworkers/server.ts

@@ -0,0 +1,133 @@
+import {
+  ansiColorFormatter,
+  configure,
+  type LogRecord,
+} from "@logtape/logtape";
+import { AsyncLocalStorage } from "node:async_hooks";
+// @ts-ignore: The following code is generated
+import { testDefinitions } from "./dist/testing/mod.js";
+// @ts-ignore: The following code is generated
+import "./imports.ts";
+
+interface TestDefinition {
+  name: string;
+  ignore?: boolean;
+  fn: (
+    // deno-lint-ignore no-explicit-any
+    ctx: { name: string; origin: string; step: any },
+  ) => void | Promise<void>;
+}
+
+// @ts-ignore: testDefinitions is untyped
+const tests: TestDefinition[] = testDefinitions;
+const logs: LogRecord[] = [];
+
+await configure({
+  sinks: {
+    buffer: logs.push.bind(logs),
+  },
+  loggers: [
+    { category: [], sinks: ["buffer"], lowestLevel: "debug" },
+  ],
+  contextLocalStorage: new AsyncLocalStorage(),
+});
+
+export default {
+  async fetch(request: Request): Promise<Response> {
+    if (request.method === "GET") {
+      return new Response(
+        JSON.stringify(tests.map(({ name }) => name)),
+        {
+          headers: { "Content-Type": "application/json" },
+        },
+      );
+    }
+    const testName = await request.text();
+    for (const def of tests) {
+      const { name, fn, ignore } = def;
+      if (testName !== name) continue;
+      if (ignore) {
+        return new Response(
+          "",
+          {
+            status: 404,
+            headers: { "Content-Type": "text/plain" },
+          },
+        );
+      }
+      let failed: unknown = undefined;
+      let capturedLogs: LogRecord[] | undefined = undefined;
+      // deno-lint-ignore no-inner-declarations
+      async function step(
+        arg: string | {
+          name: string;
+          ignore?: boolean;
+          // deno-lint-ignore no-explicit-any
+          fn: (def: any) => void | Promise<void>;
+          // deno-lint-ignore no-explicit-any
+        } | ((ctx: any) => void | Promise<void>),
+        // deno-lint-ignore no-explicit-any
+        fn?: (ctx: any) => void | Promise<void>,
+      ) {
+        let def: {
+          name: string;
+          ignore?: boolean;
+          // deno-lint-ignore no-explicit-any
+          fn: (def: any) => void | Promise<void>;
+        };
+        if (typeof arg === "string") {
+          def = { name: arg, fn: fn! };
+        } else if (typeof arg === "function") {
+          def = { name: arg.name, fn: arg };
+        } else {
+          def = arg;
+        }
+        if (def.ignore) return;
+        try {
+          await def.fn({
+            name: def.name,
+            origin: "",
+            step,
+          });
+        } catch (e) {
+          failed ??= e;
+          capturedLogs ??= [...logs];
+          return false;
+        }
+        return true;
+      }
+      logs.splice(0, logs.length); // Clear logs
+      try {
+        await fn({ name, origin: "", step });
+      } catch (e) {
+        failed ??= e;
+      }
+      capturedLogs ??= [...logs];
+      if (typeof failed === "undefined") {
+        return new Response(
+          "",
+          { status: 200, headers: { "Content-Type": "text/plain" } },
+        );
+      } else {
+        return new Response(
+          `${
+            failed instanceof Error
+              ? `${failed.message}\n${failed.stack ?? ""}`
+              : String(failed)
+          }\n${capturedLogs.map(ansiColorFormatter).join("")}`,
+          {
+            status: 500,
+            headers: { "Content-Type": "text/plain" },
+          },
+        );
+      }
+    }
+    return new Response(
+      "Test not found",
+      {
+        status: 404,
+        headers: { "Content-Type": "text/plain" },
+      },
+    );
+  },
+};

fedify/deno.json

@@ -32,6 +32,7 @@
     "asn1js": "npm:asn1js@^3.0.5",
     "byte-encodings": "npm:byte-encodings@^1.0.11",
     "fast-check": "npm:fast-check@^3.22.0",
+    "fetch-mock": "npm:fetch-mock@^12.5.2",
     "json-canon": "npm:json-canon@^1.0.1",
     "jsonld": "npm:jsonld@^8.3.2",
     "multicodec": "npm:multicodec@^3.2.1",
@@ -46,6 +47,13 @@
   ],
   "exclude": [
     "apidoc/",
+    "cfworkers/dist/",
+    "cfworkers/fixtures/",
+    "cfworkers/imports.ts",
+    "cfworkers/README.md",
+    "cfworkers/server.ts",
+    "cfworkers/server.js",
+    "cfworkers/server.js.map",
     "codegen/schema.yaml",
     "dist/",
     "node_modules/",
@@ -124,12 +132,14 @@
         "pnpm:build"
       ]
     },
+    "test:cfworkers": "pnpm run test:cfworkers",
     "test-all": {
       "dependencies": [
         "check",
         "test",
         "test:node",
-        "test:bun"
+        "test:bun",
+        "test:cfworkers"
       ]
     }
   }