```ruby
require 'spec_helper'

describe OmniAuth::Strategies::GitHub do
  it_should_behave_like "an oauth2 strategy"
end
```

Fix Instagram OAuth2 spec to test Instagram instead of Github
user
```ruby
require 'spec_helper'

describe OmniAuth::Strategies::Instagram do
  it_should_behave_like "an oauth2 strategy"
end
```
assistant