ci: fix test failures in CI by pre-populating models cache

Tests were failing in CI because the models.json cache file doesn't exist
and the data() macro fallback only works at build time, not runtime.
The preload now pre-fetches models.json and disables the background
refresh to prevent race conditions during test execution.

packages/opencode/src/flag/flag.ts

@@ -11,6 +11,7 @@ export namespace Flag {
   export const OPENCODE_DISABLE_LSP_DOWNLOAD = truthy("OPENCODE_DISABLE_LSP_DOWNLOAD")
   export const OPENCODE_ENABLE_EXPERIMENTAL_MODELS = truthy("OPENCODE_ENABLE_EXPERIMENTAL_MODELS")
   export const OPENCODE_DISABLE_AUTOCOMPACT = truthy("OPENCODE_DISABLE_AUTOCOMPACT")
+  export const OPENCODE_DISABLE_MODELS_FETCH = truthy("OPENCODE_DISABLE_MODELS_FETCH")
   export const OPENCODE_FAKE_VCS = process.env["OPENCODE_FAKE_VCS"]
   export const OPENCODE_CLIENT = process.env["OPENCODE_CLIENT"] ?? "cli"
 

packages/opencode/src/provider/models.ts

@@ -4,6 +4,7 @@ import path from "path"
 import z from "zod"
 import { data } from "./models-macro" with { type: "macro" }
 import { Installation } from "../installation"
+import { Flag } from "../flag/flag"
 
 export namespace ModelsDev {
   const log = Log.create({ service: "models.dev" })
@@ -83,6 +84,7 @@ export namespace ModelsDev {
   }
 
   export async function refresh() {
+    if (Flag.OPENCODE_DISABLE_MODELS_FETCH) return
     const file = Bun.file(filepath)
     log.info("refreshing", {
       file,

packages/opencode/test/preload.ts

@@ -11,6 +11,18 @@ process.env["XDG_CACHE_HOME"] = path.join(dir, "cache")
 process.env["XDG_CONFIG_HOME"] = path.join(dir, "config")
 process.env["XDG_STATE_HOME"] = path.join(dir, "state")
 
+// Pre-fetch models.json so tests don't need the macro fallback
+// Also write the cache version file to prevent global/index.ts from clearing the cache
+const cacheDir = path.join(dir, "cache", "opencode")
+await fs.mkdir(cacheDir, { recursive: true })
+await fs.writeFile(path.join(cacheDir, "version"), "14")
+const response = await fetch("https://models.dev/api.json")
+if (response.ok) {
+  await fs.writeFile(path.join(cacheDir, "models.json"), await response.text())
+}
+// Disable models.dev refresh to avoid race conditions during tests
+process.env["OPENCODE_DISABLE_MODELS_FETCH"] = "true"
+
 // Clear provider env vars to ensure clean test state
 delete process.env["ANTHROPIC_API_KEY"]
 delete process.env["OPENAI_API_KEY"]