feat: enable GitLab Agent Platform with workflow model discovery (#18014)

packages/opencode/test/provider/gitlab-duo.test.ts

@@ -1,12 +1,13 @@
-import { test, expect } from "bun:test"
+import { test, expect, describe } from "bun:test"
 import path from "path"
 
-import { ProviderID } from "../../src/provider/schema"
+import { ProviderID, ModelID } from "../../src/provider/schema"
 import { tmpdir } from "../fixture/fixture"
 import { Instance } from "../../src/project/instance"
 import { Provider } from "../../src/provider/provider"
 import { Env } from "../../src/env"
 import { Global } from "../../src/global"
+import { GitLabWorkflowLanguageModel } from "gitlab-ai-provider"
 
 test("GitLab Duo: loads provider with API key from environment", async () => {
   await using tmp = await tmpdir({
@@ -287,3 +288,121 @@ test("GitLab Duo: has multiple agentic chat models available", async () => {
     },
   })
 })
+
+describe("GitLab Duo: workflow model routing", () => {
+  test("duo-workflow-* model routes through workflowChat", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ $schema: "https://opencode.ai/config.json" }))
+      },
+    })
+    await Instance.provide({
+      directory: tmp.path,
+      init: async () => {
+        Env.set("GITLAB_TOKEN", "test-token")
+      },
+      fn: async () => {
+        const providers = await Provider.list()
+        const gitlab = providers[ProviderID.gitlab]
+        expect(gitlab).toBeDefined()
+        gitlab.models["duo-workflow-sonnet-4-6"] = {
+          id: ModelID.make("duo-workflow-sonnet-4-6"),
+          providerID: ProviderID.make("gitlab"),
+          name: "Agent Platform (Claude Sonnet 4.6)",
+          family: "",
+          api: { id: "duo-workflow-sonnet-4-6", url: "https://gitlab.com", npm: "gitlab-ai-provider" },
+          status: "active",
+          headers: {},
+          options: { workflowRef: "claude_sonnet_4_6" },
+          cost: { input: 0, output: 0, cache: { read: 0, write: 0 } },
+          limit: { context: 200000, output: 64000 },
+          capabilities: {
+            temperature: false,
+            reasoning: true,
+            attachment: true,
+            toolcall: true,
+            input: { text: true, audio: false, image: true, video: false, pdf: true },
+            output: { text: true, audio: false, image: false, video: false, pdf: false },
+            interleaved: false,
+          },
+          release_date: "",
+          variants: {},
+        }
+        const model = await Provider.getModel(ProviderID.gitlab, ModelID.make("duo-workflow-sonnet-4-6"))
+        expect(model).toBeDefined()
+        expect(model.options?.workflowRef).toBe("claude_sonnet_4_6")
+        const language = await Provider.getLanguage(model)
+        expect(language).toBeDefined()
+        expect(language).toBeInstanceOf(GitLabWorkflowLanguageModel)
+      },
+    })
+  })
+
+  test("duo-chat-* model routes through agenticChat (not workflow)", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ $schema: "https://opencode.ai/config.json" }))
+      },
+    })
+    await Instance.provide({
+      directory: tmp.path,
+      init: async () => {
+        Env.set("GITLAB_TOKEN", "test-token")
+      },
+      fn: async () => {
+        const providers = await Provider.list()
+        expect(providers[ProviderID.gitlab]).toBeDefined()
+        const model = await Provider.getModel(ProviderID.gitlab, ModelID.make("duo-chat-sonnet-4-5"))
+        expect(model).toBeDefined()
+        const language = await Provider.getLanguage(model)
+        expect(language).toBeDefined()
+        expect(language).not.toBeInstanceOf(GitLabWorkflowLanguageModel)
+      },
+    })
+  })
+
+  test("model.options merged with provider.options in getLanguage", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ $schema: "https://opencode.ai/config.json" }))
+      },
+    })
+    await Instance.provide({
+      directory: tmp.path,
+      init: async () => {
+        Env.set("GITLAB_TOKEN", "test-token")
+      },
+      fn: async () => {
+        const providers = await Provider.list()
+        const gitlab = providers[ProviderID.gitlab]
+        expect(gitlab.options?.featureFlags).toBeDefined()
+        const model = await Provider.getModel(ProviderID.gitlab, ModelID.make("duo-chat-sonnet-4-5"))
+        expect(model).toBeDefined()
+        expect(model.options).toBeDefined()
+      },
+    })
+  })
+})
+
+describe("GitLab Duo: static models", () => {
+  test("static duo-chat models always present regardless of discovery", async () => {
+    await using tmp = await tmpdir({
+      init: async (dir) => {
+        await Bun.write(path.join(dir, "opencode.json"), JSON.stringify({ $schema: "https://opencode.ai/config.json" }))
+      },
+    })
+    await Instance.provide({
+      directory: tmp.path,
+      init: async () => {
+        Env.set("GITLAB_TOKEN", "test-token")
+      },
+      fn: async () => {
+        const providers = await Provider.list()
+        const models = Object.keys(providers[ProviderID.gitlab].models)
+        expect(models).toContain("duo-chat-haiku-4-5")
+        expect(models).toContain("duo-chat-sonnet-4-5")
+        expect(models).toContain("duo-chat-opus-4-5")
+      },
+    })
+  })
+})

packages/opencode/test/tool/fixtures/models-api.json

@@ -32933,7 +32933,7 @@
   "gitlab": {
     "id": "gitlab",
     "env": ["GITLAB_TOKEN"],
-    "npm": "@gitlab/gitlab-ai-provider",
+    "npm": "gitlab-ai-provider",
     "name": "GitLab Duo",
     "doc": "https://docs.gitlab.com/user/duo_agent_platform/",
     "models": {