feat: convert serial console into the serial plugin

src/backend/tests/plugins/ctx-capabilities.test.ts

@@ -0,0 +1,106 @@
+/**
+ * ctx.capabilities: a generic check for privileged code no ctx method wraps,
+ * used first by the serial plugin to gate opening a physical device. Every
+ * `require` call is audited, allowed or refused, the same as a guarded ctx
+ * method.
+ */
+
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const grants = new Map<string, string[]>();
+const auditEntries: Array<Record<string, unknown>> = [];
+
+vi.mock("../../database/repositories/factory.js", () => ({
+  createCurrentPluginPermissionGrantRepository: () => ({
+    listByPlugin: async (pluginId: string) =>
+      (grants.get(pluginId) ?? []).map((capability) => ({
+        pluginId,
+        capability,
+      })),
+  }),
+}));
+
+vi.mock("../../utils/audit-logger.js", () => ({
+  logAudit: async (entry: Record<string, unknown>) => {
+    auditEntries.push(entry);
+  },
+}));
+
+import { createPluginContext, createPluginHandle } from "../../plugins/ctx.js";
+import { invalidatePluginPermissionCache } from "../../plugins/permissions.js";
+import type { PluginManifest } from "@termix/plugin-sdk/manifest";
+
+function manifestFor(pluginId: string, capabilities: string[]): PluginManifest {
+  return {
+    id: pluginId,
+    name: pluginId,
+    version: "1.0.0",
+    description: "",
+    author: { name: "test" },
+    license: "MIT",
+    category: "Productivity",
+    engine: { termix: ">=2.9.0", api: "1" },
+    capabilities,
+  } as PluginManifest;
+}
+
+function contextFor(pluginId: string, capabilities: string[]) {
+  const manifest = manifestFor(pluginId, capabilities);
+  const handle = createPluginHandle(pluginId, { activate: () => {} });
+  return { ctx: createPluginContext(manifest, handle), handle };
+}
+
+beforeEach(() => {
+  grants.clear();
+  auditEntries.length = 0;
+  invalidatePluginPermissionCache();
+});
+
+describe("ctx.capabilities", () => {
+  it("has() is false when the manifest never declared the capability", async () => {
+    grants.set("demo", ["device:serial"]);
+    const { ctx } = contextFor("demo", []);
+
+    await expect(ctx.capabilities.has("device:serial")).resolves.toBe(false);
+  });
+
+  it("has() is false when declared but not granted", async () => {
+    grants.set("demo", []);
+    const { ctx } = contextFor("demo", ["device:serial"]);
+
+    await expect(ctx.capabilities.has("device:serial")).resolves.toBe(false);
+  });
+
+  it("has() is true when declared and granted", async () => {
+    grants.set("demo", ["device:serial"]);
+    const { ctx } = contextFor("demo", ["device:serial"]);
+
+    await expect(ctx.capabilities.has("device:serial")).resolves.toBe(true);
+  });
+
+  it("require() throws and audits a refusal without the capability", async () => {
+    grants.set("demo", []);
+    const { ctx } = contextFor("demo", []);
+
+    await expect(ctx.capabilities.require("device:serial")).rejects.toThrow(
+      /device:serial/,
+    );
+    expect(auditEntries.at(-1)).toMatchObject({
+      action: "plugin_capability_require",
+      success: false,
+    });
+  });
+
+  it("require() resolves and audits success when granted", async () => {
+    grants.set("demo", ["device:serial"]);
+    const { ctx } = contextFor("demo", ["device:serial"]);
+
+    await expect(
+      ctx.capabilities.require("device:serial"),
+    ).resolves.toBeUndefined();
+    expect(auditEntries.at(-1)).toMatchObject({
+      action: "plugin_capability_require",
+      success: true,
+    });
+  });
+});