feat(mcp): add OAuth redirect URI configuration for MCP servers (#21385)

Co-authored-by: Aiden Cline <63023139+rekram1-node@users.noreply.github.com>

packages/opencode/test/mcp/oauth-callback.test.ts

@@ -0,0 +1,34 @@
+import { test, expect, describe, afterEach } from "bun:test"
+import { McpOAuthCallback } from "../../src/mcp/oauth-callback"
+import { parseRedirectUri } from "../../src/mcp/oauth-provider"
+
+describe("parseRedirectUri", () => {
+  test("returns defaults when no URI provided", () => {
+    const result = parseRedirectUri()
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+
+  test("parses port and path from URI", () => {
+    const result = parseRedirectUri("http://127.0.0.1:8080/oauth/callback")
+    expect(result.port).toBe(8080)
+    expect(result.path).toBe("/oauth/callback")
+  })
+
+  test("returns defaults for invalid URI", () => {
+    const result = parseRedirectUri("not-a-valid-url")
+    expect(result.port).toBe(19876)
+    expect(result.path).toBe("/mcp/oauth/callback")
+  })
+})
+
+describe("McpOAuthCallback.ensureRunning", () => {
+  afterEach(async () => {
+    await McpOAuthCallback.stop()
+  })
+
+  test("starts server with custom redirectUri port and path", async () => {
+    await McpOAuthCallback.ensureRunning("http://127.0.0.1:18000/custom/callback")
+    expect(McpOAuthCallback.isRunning()).toBe(true)
+  })
+})