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import { describe, expect, mock } from "bun:test"
import { Effect } from "effect"
import { Catalog } from "@opencode-ai/core/catalog"
import { ModelV2 } from "@opencode-ai/core/model"
import { PluginV2 } from "@opencode-ai/core/plugin"
import { PluginHost } from "@opencode-ai/core/plugin/host"
import { GoogleVertexPlugin } from "@opencode-ai/core/plugin/provider/google-vertex"
import { ProviderV2 } from "@opencode-ai/core/provider"
import type { LanguageModelV3 } from "@ai-sdk/provider"
import { testEffect } from "../lib/effect"
import { PluginTestLayer } from "./fixture"
const vertexOptions: Record<string, any>[] = []
const googleAuthOptions: Record<string, any>[] = []
const it = testEffect(PluginTestLayer)
const addPlugin = Effect.fn(function* () {
const plugin = yield* PluginV2.Service
const aisdk = yield* AISDK.Service
const host = yield* PluginHost.make(plugin)
yield* GoogleVertexPlugin.effect(host)
})
function required<T>(value: T | undefined): T {
if (value === undefined) throw new Error("Expected value")
return value
}
function withEnv<A, E, R>(vars: Record<string, string | undefined>, effect: () => Effect.Effect<A, E, R>) {
return Effect.acquireUseRelease(
Effect.sync(() => {
const previous = Object.fromEntries(Object.keys(vars).map((key) => [key, process.env[key]]))
Object.entries(vars).forEach(([key, value]) => {
if (value === undefined) delete process.env[key]
else process.env[key] = value
})
return previous
}),
effect,
(previous) =>
Effect.sync(() =>
Object.entries(previous).forEach(([key, value]) => {
if (value === undefined) delete process.env[key]
else process.env[key] = value
}),
),
)
}
function fakeSelectorSdk(calls: string[]) {
const make = (method: string) => (id: string) => {
calls.push(`${method}:${id}`)
return { modelId: id, provider: method, specificationVersion: "v3" } as unknown as LanguageModelV3
}
return {
responses: make("responses"),
messages: make("messages"),
chat: make("chat"),
languageModel: make("languageModel"),
}
}
void mock.module("@ai-sdk/google-vertex", () => ({
createVertex: (options: Record<string, any>) => {
vertexOptions.push(options)
return {
languageModel: (modelID: string) => ({ modelID, provider: "google-vertex", specificationVersion: "v3" }),
}
},
}))
void mock.module("google-auth-library", () => ({
GoogleAuth: class {
constructor(options: Record<string, any>) {
googleAuthOptions.push(options)
}
async getClient() {
return {
async getAccessToken() {
return { token: "vertex-token" }
},
}
}
},
}))
describe("GoogleVertexPlugin", () => {
it.effect("ignores OpenAI-compatible providers that are not Google Vertex", () =>
Effect.gen(function* () {
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.opencode, (provider) => {
provider.api = {
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://opencode.ai/zen/v1",
}
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.opencode))
expect(provider.request.body).toEqual({})
}),
)
it.effect("resolves project and location from env using legacy precedence", () =>
withEnv(
{
GOOGLE_CLOUD_PROJECT: "google-cloud-project",
GCP_PROJECT: "gcp-project",
GCLOUD_PROJECT: "gcloud-project",
GOOGLE_VERTEX_LOCATION: "google-vertex-location",
GOOGLE_CLOUD_LOCATION: "google-cloud-location",
VERTEX_LOCATION: "vertex-location",
},
() =>
Effect.gen(function* () {
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
provider.api = {
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
}
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.make("google-vertex")))
expect(provider.request.body.project).toBe("google-cloud-project")
expect(provider.request.body.location).toBe("google-vertex-location")
expect(provider.api).toEqual({
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://google-vertex-location-aiplatform.googleapis.com/v1/projects/google-cloud-project/locations/google-vertex-location",
})
}),
),
)
it.effect("resolves the advertised GOOGLE_VERTEX_PROJECT env for provider updates and SDKs", () =>
withEnv(
{
GOOGLE_VERTEX_PROJECT: "vertex-project",
GOOGLE_CLOUD_PROJECT: undefined,
GCP_PROJECT: undefined,
GCLOUD_PROJECT: undefined,
GOOGLE_VERTEX_LOCATION: "europe-west4",
GOOGLE_CLOUD_LOCATION: undefined,
VERTEX_LOCATION: undefined,
},
() =>
Effect.gen(function* () {
vertexOptions.length = 0
const plugin = yield* PluginV2.Service
const aisdk = yield* AISDK.Service
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
provider.api = {
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
}
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.make("google-vertex")))
yield* aisdk.runSDK({
model: ModelV2.Info.make({
...ModelV2.Info.empty(ProviderV2.ID.make("google-vertex"), ModelV2.ID.make("gemini")),
api: {
id: ModelV2.ID.make("gemini"),
type: "aisdk",
package: "@ai-sdk/google-vertex",
},
}),
package: "@ai-sdk/google-vertex",
options: { name: "google-vertex" },
})
expect(provider.request.body.project).toBe("vertex-project")
expect(provider.api).toEqual({
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://europe-west4-aiplatform.googleapis.com/v1/projects/vertex-project/locations/europe-west4",
})
expect(vertexOptions[0].project).toBe("vertex-project")
expect(vertexOptions[0].location).toBe("europe-west4")
}),
),
)
it.effect("keeps configured project and location over env and uses global endpoint", () =>
withEnv(
{
GOOGLE_CLOUD_PROJECT: "env-project",
GCP_PROJECT: "env-gcp-project",
GCLOUD_PROJECT: "env-gcloud-project",
GOOGLE_VERTEX_LOCATION: "env-location",
GOOGLE_CLOUD_LOCATION: "env-google-cloud-location",
VERTEX_LOCATION: "env-vertex-location",
},
() =>
Effect.gen(function* () {
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
provider.api = {
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
}
provider.request.body.project = "config-project"
provider.request.body.location = "global"
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.make("google-vertex")))
expect(provider.request.body.project).toBe("config-project")
expect(provider.request.body.location).toBe("global")
expect(provider.api).toEqual({
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://aiplatform.googleapis.com/v1/projects/config-project/locations/global",
})
}),
),
)
it.effect("keeps OpenAI-compatible Vertex endpoint templates regional for eu", () =>
Effect.gen(function* () {
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
provider.api = {
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://${GOOGLE_VERTEX_ENDPOINT}/v1/projects/${GOOGLE_VERTEX_PROJECT}/locations/${GOOGLE_VERTEX_LOCATION}",
}
provider.request.body.project = "config-project"
provider.request.body.location = "eu"
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.make("google-vertex")))
expect(provider.api).toEqual({
type: "aisdk",
package: "@ai-sdk/openai-compatible",
url: "https://eu-aiplatform.googleapis.com/v1/projects/config-project/locations/eu",
})
}),
)
it.effect("defaults location to us-central1 when only project is configured", () =>
withEnv(
{
GOOGLE_CLOUD_PROJECT: undefined,
GCP_PROJECT: undefined,
GCLOUD_PROJECT: undefined,
GOOGLE_VERTEX_LOCATION: undefined,
GOOGLE_CLOUD_LOCATION: undefined,
VERTEX_LOCATION: undefined,
},
() =>
Effect.gen(function* () {
const catalog = yield* Catalog.Service
yield* catalog.transform((catalog) =>
catalog.provider.update(ProviderV2.ID.make("google-vertex"), (provider) => {
provider.api = { type: "aisdk", package: "@ai-sdk/google-vertex" }
provider.request.body.project = "config-project"
}),
)
yield* addPlugin()
const provider = required(yield* catalog.provider.get(ProviderV2.ID.make("google-vertex")))
expect(provider.request.body.project).toBe("config-project")
expect(provider.request.body.location).toBe("us-central1")
}),
),
)
it.effect("does not pass Google auth fetch to the native Vertex SDK", () =>
withEnv(
{
GOOGLE_CLOUD_PROJECT: "env-project",
GOOGLE_VERTEX_LOCATION: "env-location",
},
() =>
Effect.gen(function* () {
vertexOptions.length = 0
const plugin = yield* PluginV2.Service
const aisdk = yield* AISDK.Service
yield* addPlugin()
yield* aisdk.runSDK({
model: ModelV2.Info.make({
...ModelV2.Info.empty(ProviderV2.ID.make("google-vertex"), ModelV2.ID.make("gemini")),
api: {
id: ModelV2.ID.make("gemini"),
type: "aisdk",
package: "@ai-sdk/google-vertex",
},
}),
package: "@ai-sdk/google-vertex",
options: { name: "google-vertex" },
})
expect(vertexOptions).toHaveLength(1)
expect(vertexOptions[0].project).toBe("env-project")
expect(vertexOptions[0].location).toBe("env-location")
expect(vertexOptions[0].fetch).toBeUndefined()
}),
),
)
it.effect("keeps Google auth fetch for OpenAI-compatible Vertex endpoints", () =>
Effect.gen(function* () {
googleAuthOptions.length = 0
const fetchCalls: { input: Parameters<typeof fetch>[0]; init?: RequestInit }[] = []
const plugin = yield* PluginV2.Service
const aisdk = yield* AISDK.Service
yield* addPlugin()
yield* aisdk.hook.sdk((evt) =>
Effect.promise(async () => {
if (evt.model.providerID !== "google-vertex") return
if (evt.package !== "@ai-sdk/openai-compatible") return
expect(typeof evt.options.fetch).toBe("function")
await evt.options.fetch("https://vertex.example", {
headers: { "x-test": "1" },
})
}),
)
const originalFetch = fetch
;(globalThis as typeof globalThis & { fetch: typeof fetch }).fetch = (async (
input: Parameters<typeof fetch>[0],
init?: RequestInit,
) => {
fetchCalls.push({ input, init })
return new Response("ok")
}) as typeof fetch
yield* Effect.acquireUseRelease(
Effect.void,
() =>
aisdk.runSDK({
model: ModelV2.Info.make({
...ModelV2.Info.empty(ProviderV2.ID.make("google-vertex"), ModelV2.ID.make("gemini")),
api: {
id: ModelV2.ID.make("gemini"),
type: "aisdk",
package: "@ai-sdk/openai-compatible",
},
}),
package: "@ai-sdk/openai-compatible",
options: { name: "google-vertex" },
}),
() =>
Effect.sync(() => {
;(globalThis as typeof globalThis & { fetch: typeof fetch }).fetch = originalFetch
}),
)
expect(fetchCalls).toHaveLength(1)
expect(googleAuthOptions).toEqual([{ scopes: ["https://www.googleapis.com/auth/cloud-platform"] }])
expect(fetchCalls[0].input).toBe("https://vertex.example")
expect(new Headers(fetchCalls[0].init?.headers).get("authorization")).toBe("Bearer vertex-token")
expect(new Headers(fetchCalls[0].init?.headers).get("x-test")).toBe("1")
}),
)
it.effect("trims model IDs before selecting language models", () =>
Effect.gen(function* () {
const plugin = yield* PluginV2.Service
const aisdk = yield* AISDK.Service
const calls: string[] = []
yield* addPlugin()
yield* aisdk.runLanguage({
model: ModelV2.Info.make({
...ModelV2.Info.empty(ProviderV2.ID.make("google-vertex"), ModelV2.ID.make(" gemini-2.5-pro ")),
api: { id: ModelV2.ID.make(" gemini-2.5-pro "), type: "aisdk", package: "test-provider" },
}),
sdk: { languageModel: fakeSelectorSdk(calls).languageModel },
options: {},
})
expect(calls).toEqual(["languageModel:gemini-2.5-pro"])
}),
)
})
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