feat(core): add embedded v2 session runtime and tool foundation (#30632)

packages/core/test/plugin.test.ts

@@ -0,0 +1,90 @@
+import { describe, expect } from "bun:test"
+import { Context, Deferred, Effect, Exit, Fiber, Layer, Scope } from "effect"
+import { EventV2 } from "@opencode-ai/core/event"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { State } from "@opencode-ai/core/state"
+import { it } from "./lib/effect"
+
+const events = Layer.mock(EventV2.Service)({
+  publish: (definition, data) =>
+    Effect.succeed({
+      id: EventV2.ID.make("evt_plugin_test"),
+      type: definition.type,
+      data,
+    }),
+})
+const plugins = PluginV2.layer.pipe(Layer.provide(events))
+
+function state() {
+  return State.create({
+    initial: () => ({ values: [] as string[] }),
+    editor: (draft) => ({
+      add: (value: string) => draft.values.push(value),
+    }),
+  })
+}
+
+describe("PluginV2", () => {
+  it.effect("closes plugin-owned scopes when the registry layer finalizes", () =>
+    Effect.gen(function* () {
+      const values = state()
+      const layerScope = yield* Scope.fork(yield* Scope.Scope)
+      const plugin = Context.get(yield* Layer.buildWithScope(Layer.fresh(plugins), layerScope), PluginV2.Service)
+
+      yield* plugin.add({
+        id: PluginV2.ID.make("scoped"),
+        effect: Effect.gen(function* () {
+          const transform = yield* values.transform()
+          yield* transform((editor) => editor.add("scoped"))
+        }),
+      })
+      expect(values.get().values).toEqual(["scoped"])
+
+      yield* Scope.close(layerScope, Exit.void)
+      expect(values.get().values).toEqual([])
+    }),
+  )
+
+  it.effect("serializes same-ID additions and leaves one removable contribution", () =>
+    Effect.gen(function* () {
+      const values = state()
+      const layerScope = yield* Scope.fork(yield* Scope.Scope)
+      const plugin = Context.get(yield* Layer.buildWithScope(Layer.fresh(plugins), layerScope), PluginV2.Service)
+      const id = PluginV2.ID.make("shared")
+      const firstStarted = yield* Deferred.make<void>()
+      const releaseFirst = yield* Deferred.make<void>()
+
+      const first = yield* plugin
+        .add({
+          id,
+          effect: Effect.gen(function* () {
+            const transform = yield* values.transform()
+            yield* transform((editor) => editor.add("first"))
+            yield* Deferred.succeed(firstStarted, undefined)
+            yield* Deferred.await(releaseFirst)
+          }),
+        })
+        .pipe(Effect.forkChild)
+      yield* Deferred.await(firstStarted)
+
+      const second = yield* plugin
+        .add({
+          id,
+          effect: Effect.gen(function* () {
+            const transform = yield* values.transform()
+            yield* transform((editor) => editor.add("second"))
+          }),
+        })
+        .pipe(Effect.forkChild({ startImmediately: true }))
+      expect(values.get().values).toEqual(["first"])
+
+      yield* Deferred.succeed(releaseFirst, undefined)
+      yield* Fiber.join(first)
+      yield* Fiber.join(second)
+      expect(values.get().values).toEqual(["second"])
+
+      yield* plugin.remove(id)
+      expect(values.get().values).toEqual([])
+    }),
+  )
+})