Define and generate mock objects for external dependencies using `package:mockito` and `build_runner`. Use when unit testing classes that depend on complex external services like APIs or databases.
Install
npx skills add flutter/agent-plugins --skill dart-generate-test-mocksnpx skills add flutter/agent-plugins --skill dart-generate-test-mocks -a claude-code -gnpx skills add flutter/agent-plugins --skill dart-generate-test-mocks -a codex -ggemini skills install https://github.com/flutter/agent-plugins.git --path skills/dart-generate-test-mocksgh skill install flutter/agent-plugins dart-generate-test-mocksgit clone --depth 1 https://github.com/flutter/agent-plugins /tmp/flutter__agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/flutter__agent-plugins/skills/dart-generate-test-mocks ~/.claude/skills/dart-generate-test-mocks # Claude Code
cp -R /tmp/flutter__agent-plugins/skills/dart-generate-test-mocks ~/.agents/skills/dart-generate-test-mocks # Codex, Cursor, Gemini CLI, Copilot, OpenCode