fix: Add Plugin Mocks to Provider Tests (anomalyco#8276)

Author: vglafirov

packages/opencode/src/provider/provider.ts

@@ -1,6 +1,4 @@
 import z from "zod"
-import path from "path"
-import os from "os"
 import fuzzysort from "fuzzysort"
 import { Config } from "../config/config"
 import { mapValues, mergeDeep, omit, pickBy, sortBy } from "remeda"
@@ -605,13 +603,13 @@ export namespace Provider {
         },
         experimentalOver200K: model.cost?.context_over_200k
           ? {
-              cache: {
-                read: model.cost.context_over_200k.cache_read ?? 0,
-                write: model.cost.context_over_200k.cache_write ?? 0,
-              },
-              input: model.cost.context_over_200k.input,
-              output: model.cost.context_over_200k.output,
-            }
+            cache: {
+              read: model.cost.context_over_200k.cache_read ?? 0,
+              write: model.cost.context_over_200k.cache_write ?? 0,
+            },
+            input: model.cost.context_over_200k.input,
+            output: model.cost.context_over_200k.output,
+          }
           : undefined,
       },
       limit: {

packages/opencode/test/provider/provider.test.ts

@@ -1,5 +1,27 @@
-import { test, expect } from "bun:test"
+import { test, expect, mock } from "bun:test"
 import path from "path"
+
+// Mock BunProc and default plugins to prevent actual installations during tests
+mock.module("../../src/bun/index", () => ({
+  BunProc: {
+    install: async (pkg: string, _version?: string) => {
+      // Return package name without version for mocking
+      const lastAtIndex = pkg.lastIndexOf("@")
+      return lastAtIndex > 0 ? pkg.substring(0, lastAtIndex) : pkg
+    },
+    run: async () => {
+      throw new Error("BunProc.run should not be called in tests")
+    },
+    which: () => process.execPath,
+    InstallFailedError: class extends Error {},
+  },
+}))
+
+const mockPlugin = () => ({})
+mock.module("opencode-copilot-auth", () => ({ default: mockPlugin }))
+mock.module("opencode-anthropic-auth", () => ({ default: mockPlugin }))
+mock.module("@gitlab/opencode-gitlab-auth", () => ({ default: mockPlugin }))
+
 import { tmpdir } from "../fixture/fixture"
 import { Instance } from "../../src/project/instance"
 import { Provider } from "../../src/provider/provider"