```ruby
describe Hbc::CLI::InternalStanza, :cask do
  it "shows stanza of the Specified Cask" do
    command = described_class.new("gpg", "with-gpg")
    expect do
      command.run
    end.to output("http://example.com/gpg-signature.asc\n").to_stdout
  end

  it "raises an exception when stanza is invalid" do
    expect do
      described_class.new("invalid_stanza", "with-gpg")
    end.to raise_error(/Illegal stanza/)
  end

  it "raises an exception when normal stanza is not present on cask" do
    command = described_class.new("caveats", "with-gpg")
    expect do
      command.run
    end.to raise_error(/no such stanza/)
  end

  it "raises an exception when artifact stanza is not present on cask" do
    command = described_class.new("zap", "with-gpg")
    expect do
      command.run
    end.to raise_error(/no such stanza/)
  end
end
```

Add another test to increase coverage.
user
```ruby
describe Hbc::CLI::InternalStanza, :cask do
  it "shows stanza of the Specified Cask" do
    command = described_class.new("gpg", "with-gpg")
    expect do
      command.run
    end.to output("http://example.com/gpg-signature.asc\n").to_stdout
  end

  it "raises an exception when stanza is invalid" do
    expect do
      described_class.new("invalid_stanza", "with-gpg")
    end.to raise_error(/Illegal stanza/)
  end

  it "raises an exception when normal stanza is not present on cask" do
    command = described_class.new("caveats", "with-gpg")
    expect do
      command.run
    end.to raise_error(/no such stanza/)
  end

  it "raises an exception when artifact stanza is not present on cask" do
    command = described_class.new("zap", "with-gpg")
    expect do
      command.run
    end.to raise_error(/no such stanza/)
  end

  it "shows all artifact stanzas when using 'artifacts' keyword" do
    command = described_class.new("artifacts", "with-gpg")
    expect do
      command.run
    end.to output("{:app=>[[\"Caffeine.app\"]]}\n").to_stdout
  end
end
```
assistant