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Ekklesia/core/tests/module-discovery.test.ts
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ekklesia 7b448d8706
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feat: add module runtime lifecycle
2026-07-12 22:49:51 -05:00

489 lines
16 KiB
TypeScript

import { mkdir, mkdtemp, rm, symlink, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import path from "node:path";
import { afterEach, describe, expect, it } from "vitest";
import {
discoverModules,
ModuleDiscoveryError,
type ModuleDiscoveryIssueCode,
} from "../src/modules/index.js";
interface ModuleFixtureOptions {
directory?: string;
manifest?: Record<string, unknown>;
packageJson?: Record<string, unknown>;
serverSource?: string;
}
const temporaryDirectories: string[] = [];
afterEach(async () => {
await Promise.all(
temporaryDirectories.splice(0).map((directory) => rm(directory, { recursive: true })),
);
});
async function createModulesDirectory(): Promise<string> {
const directory = await mkdtemp(path.join(tmpdir(), "ekklesia-modules-"));
temporaryDirectories.push(directory);
return directory;
}
function manifestFor(id: string): Record<string, unknown> {
return {
manifestVersion: 2,
id,
name: `${id} module`,
version: "0.1.0",
compatibility: {
platform: "^0.1.0",
moduleSdk: "^0.1.0",
},
capabilities: [{ id: `${id}.records`, version: "1.0.0" }],
permissions: [`${id}.records.read`],
entrypoints: {
server: "./dist/server/index.js",
},
};
}
async function createModule(
modulesDirectory: string,
id: string,
options: ModuleFixtureOptions = {},
): Promise<void> {
const directoryName = options.directory ?? id;
const moduleDirectory = path.join(modulesDirectory, directoryName);
const manifest = options.manifest ?? manifestFor(id);
const packageJson = options.packageJson ?? {
name: `@test/module-${id}`,
version: "0.1.0",
type: "module",
ekklesia: { layer: "module" },
};
await mkdir(path.join(moduleDirectory, "dist/server"), { recursive: true });
await Promise.all([
writeFile(path.join(moduleDirectory, "package.json"), JSON.stringify(packageJson)),
writeFile(path.join(moduleDirectory, "ekklesia.module.json"), JSON.stringify(manifest)),
writeFile(
path.join(moduleDirectory, "dist/server/index.js"),
options.serverSource ?? `export default { id: ${JSON.stringify(id)}, version: "0.1.0" };`,
),
]);
}
async function discoveryError(
modulesDirectory: string,
versions: { moduleSdkVersion?: string; platformVersion?: string } = {},
): Promise<ModuleDiscoveryError> {
try {
await discoverModules({
moduleSdkVersion: versions.moduleSdkVersion ?? "0.1.0",
modulesDirectory,
platformVersion: versions.platformVersion ?? "0.1.0",
});
} catch (error) {
if (error instanceof ModuleDiscoveryError) {
return error;
}
throw error;
}
throw new Error("Expected module discovery to fail.");
}
function issueCodes(error: ModuleDiscoveryError): ModuleDiscoveryIssueCode[] {
return error.issues.map((issue) => issue.code);
}
describe("module discovery", () => {
it("treats a missing or empty modules directory as zero installed modules", async () => {
const parent = await createModulesDirectory();
const missing = path.join(parent, "missing");
await expect(
discoverModules({
moduleSdkVersion: "0.1.0",
modulesDirectory: missing,
platformVersion: "0.1.0",
}),
).resolves.toEqual([]);
await expect(
discoverModules({
moduleSdkVersion: "0.1.0",
modulesDirectory: parent,
platformVersion: "0.1.0",
}),
).resolves.toEqual([]);
});
it("discovers static manifests and orders dependencies deterministically", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "calendar", {
manifest: {
...manifestFor("calendar"),
dependencies: {
modules: { required: { people: "^0.1.0" } },
capabilities: { required: { "people.records": "^2.0.0" } },
},
storage: { buckets: [{ id: "assets" }, { id: "exports" }] },
},
serverSource: 'throw new Error("discovery must never execute server code");',
});
await createModule(modulesDirectory, "people", {
manifest: {
...manifestFor("people"),
capabilities: [{ id: "people.records", version: "2.1.0" }],
},
});
const modules = await discoverModules({
moduleSdkVersion: "0.1.0",
modulesDirectory,
platformVersion: "0.1.0",
});
expect(modules.map((module) => module.manifest.id)).toEqual(["people", "calendar"]);
expect(modules[1]?.manifest.storage.buckets.map((bucket) => bucket.id)).toEqual([
"assets",
"exports",
]);
expect(Object.isFrozen(modules[1]?.manifest)).toBe(true);
const mutableBuckets = modules[1]?.manifest.storage.buckets as unknown as Array<{ id: string }>;
expect(() => mutableBuckets.push({ id: "tampered" })).toThrow(TypeError);
});
it("aggregates malformed packages and manifests without partial discovery", async () => {
const modulesDirectory = await createModulesDirectory();
await mkdir(path.join(modulesDirectory, "missing"));
await createModule(modulesDirectory, "invalid", {
manifest: { ...manifestFor("invalid"), renderers: ["not-allowed"] },
packageJson: {
name: "@test/module-invalid",
version: "not-semver",
type: "commonjs",
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toEqual(
expect.arrayContaining([
"MODULE_MANIFEST_INVALID",
"MODULE_MANIFEST_MISSING",
"MODULE_PACKAGE_INVALID",
"MODULE_PACKAGE_MISSING",
]),
);
});
it("aggregates malformed JSON without exposing machine-specific paths", async () => {
const modulesDirectory = await createModulesDirectory();
const moduleDirectory = path.join(modulesDirectory, "broken-json");
await mkdir(moduleDirectory);
await Promise.all([
writeFile(path.join(moduleDirectory, "package.json"), "{"),
writeFile(path.join(moduleDirectory, "ekklesia.module.json"), "["),
]);
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toEqual(
expect.arrayContaining(["MODULE_MANIFEST_INVALID", "MODULE_PACKAGE_INVALID"]),
);
expect(error.issues.every((issue) => !issue.message.includes(modulesDirectory))).toBe(true);
});
it("requires package and manifest versions to match", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "mismatch", {
packageJson: {
name: "@test/module-mismatch",
version: "0.2.0",
type: "module",
ekklesia: { layer: "module" },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_VERSION_MISMATCH");
});
it("rejects duplicate module IDs and package names", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "one", {
manifest: {
...manifestFor("one"),
id: "shared",
capabilities: [{ id: "shared.records", version: "1.0.0" }],
permissions: ["shared.records.read"],
},
packageJson: {
name: "@test/duplicate",
version: "0.1.0",
type: "module",
ekklesia: { layer: "module" },
},
});
await createModule(modulesDirectory, "two", {
manifest: {
...manifestFor("two"),
id: "shared",
capabilities: [{ id: "shared.records", version: "1.0.0" }],
permissions: ["shared.records.read"],
},
packageJson: {
name: "@test/duplicate",
version: "0.1.0",
type: "module",
ekklesia: { layer: "module" },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toEqual(
expect.arrayContaining(["MODULE_ID_DUPLICATE", "MODULE_PACKAGE_NAME_DUPLICATE"]),
);
});
it("enforces platform and Module SDK compatibility", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "future", {
manifest: {
...manifestFor("future"),
compatibility: { platform: ">=1.0.0", moduleSdk: ">=2.0.0" },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toEqual(
expect.arrayContaining(["MODULE_PLATFORM_INCOMPATIBLE", "MODULE_SDK_INCOMPATIBLE"]),
);
});
it("allows missing optional dependencies but rejects missing required dependencies", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "optional-consumer", {
manifest: {
...manifestFor("optional-consumer"),
dependencies: { modules: { optional: { absent: "^1.0.0" } } },
},
});
await expect(
discoverModules({
moduleSdkVersion: "0.1.0",
modulesDirectory,
platformVersion: "0.1.0",
}),
).resolves.toHaveLength(1);
await createModule(modulesDirectory, "required-consumer", {
manifest: {
...manifestFor("required-consumer"),
dependencies: { modules: { required: { absent: "^1.0.0" } } },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_DEPENDENCY_MISSING");
});
it("rejects installed dependencies with incompatible versions", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "people");
await createModule(modulesDirectory, "calendar", {
manifest: {
...manifestFor("calendar"),
dependencies: { modules: { optional: { people: "^2.0.0" } } },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_DEPENDENCY_INCOMPATIBLE");
});
it("allows absent optional capabilities but rejects missing required capabilities", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "optional-consumer", {
manifest: {
...manifestFor("optional-consumer"),
dependencies: { capabilities: { optional: { "people.records": "^1.0.0" } } },
},
});
await expect(
discoverModules({
moduleSdkVersion: "0.1.0",
modulesDirectory,
platformVersion: "0.1.0",
}),
).resolves.toHaveLength(1);
await createModule(modulesDirectory, "consumer", {
manifest: {
...manifestFor("consumer"),
dependencies: { capabilities: { required: { "people.records": "^1.0.0" } } },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_CAPABILITY_MISSING");
});
it("rejects incompatible installed required and optional capabilities", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "people");
await createModule(modulesDirectory, "required-consumer", {
manifest: {
...manifestFor("required-consumer"),
dependencies: { capabilities: { required: { "people.records": "^2.0.0" } } },
},
});
await createModule(modulesDirectory, "optional-consumer", {
manifest: {
...manifestFor("optional-consumer"),
dependencies: { capabilities: { optional: { "people.records": "^3.0.0" } } },
},
});
const error = await discoveryError(modulesDirectory);
const incompatibilities = error.issues.filter(
(issue) => issue.code === "MODULE_CAPABILITY_INCOMPATIBLE",
);
expect(incompatibilities).toHaveLength(2);
expect(incompatibilities).toEqual(
expect.arrayContaining([
expect.objectContaining({
message: "Capability people.records 1.0.0 does not satisfy ^2.0.0.",
path: "dependencies.capabilities.required.people.records",
}),
expect.objectContaining({
message: "Capability people.records 1.0.0 does not satisfy ^3.0.0.",
path: "dependencies.capabilities.optional.people.records",
}),
]),
);
});
it("detects dependency cycles", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "one", {
manifest: {
...manifestFor("one"),
dependencies: { modules: { required: { two: "^0.1.0" } } },
},
});
await createModule(modulesDirectory, "two", {
manifest: {
...manifestFor("two"),
dependencies: { modules: { required: { one: "^0.1.0" } } },
},
});
await createModule(modulesDirectory, "three", {
manifest: {
...manifestFor("three"),
dependencies: { modules: { required: { two: "^0.1.0" } } },
},
});
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_DEPENDENCY_CYCLE");
expect(error.issues.find((issue) => issue.code === "MODULE_DEPENDENCY_CYCLE")?.message).toBe(
"Module dependency cycle contains: one, two.",
);
});
it("rejects missing entrypoint targets and invalid caller versions", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "missing-server", {
manifest: {
...manifestFor("missing-server"),
entrypoints: { server: "./dist/server/missing.js" },
},
});
let error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_ENTRYPOINT_MISSING");
error = await discoveryError(modulesDirectory, { platformVersion: "invalid" });
expect(issueCodes(error)).toContain("DISCOVERY_CONFIGURATION_INVALID");
});
it("rejects source TypeScript server entrypoints", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "source-server", {
manifest: {
...manifestFor("source-server"),
entrypoints: { server: "./src/server/index.ts" },
},
});
const error = await discoveryError(modulesDirectory);
expect(error.issues).toContainEqual(
expect.objectContaining({
code: "MODULE_ENTRYPOINT_INVALID",
message: "server must reference compiled ESM JavaScript with a .js or .mjs extension.",
path: "entrypoints.server",
}),
);
});
it("requires executable entrypoints to be files and migrations to be a directory", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "wrong-entrypoint-kind", {
manifest: {
...manifestFor("wrong-entrypoint-kind"),
entrypoints: {
server: "./dist/server",
migrations: "./dist/server/index.js",
},
},
});
const error = await discoveryError(modulesDirectory);
expect(error.issues.filter((issue) => issue.code === "MODULE_ENTRYPOINT_INVALID")).toHaveLength(
2,
);
});
it("rejects package metadata links that escape the module directory", async () => {
const modulesDirectory = await createModulesDirectory();
await createModule(modulesDirectory, "linked");
const externalManifest = path.join(modulesDirectory, "external-manifest.json");
const linkedManifest = path.join(modulesDirectory, "linked", "ekklesia.module.json");
await writeFile(externalManifest, JSON.stringify(manifestFor("linked")));
await rm(linkedManifest);
await symlink("../external-manifest.json", linkedManifest);
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_MANIFEST_INVALID");
});
it("rejects symbolic links masquerading as installed module directories", async () => {
const modulesDirectory = await createModulesDirectory();
const externalModules = await createModulesDirectory();
await createModule(externalModules, "outside");
await symlink(
path.join(externalModules, "outside"),
path.join(modulesDirectory, "linked-module"),
"dir",
);
const error = await discoveryError(modulesDirectory);
expect(issueCodes(error)).toContain("MODULE_DIRECTORY_INVALID");
});
it("produces stable diagnostics independent of the absolute modules path", async () => {
const firstModulesDirectory = await createModulesDirectory();
const secondModulesDirectory = await createModulesDirectory();
await mkdir(path.join(firstModulesDirectory, "broken"));
await mkdir(path.join(secondModulesDirectory, "broken"));
const [firstError, secondError] = await Promise.all([
discoveryError(firstModulesDirectory),
discoveryError(secondModulesDirectory),
]);
expect(firstError.issues).toEqual(secondError.issues);
});
});