require File.expand_path('../spec_helper', __FILE__)

describe Danger::Changelog::ChangelogPlaceholderLine do
  context 'with a custom placeholder line' do
    before do
      Danger::Changelog.configure do |config|
        config.placeholder_line = "* Nothing yet here.\n"
      end
    end

    describe 'validates_as_changelog_line?' do
      context 'when line is equal to placeholder_line from config' do
        it 'validates as changelog line' do
          expect(described_class.validates_as_changelog_line?("* Nothing yet here.\n")).to be true
        end
      end

      context 'when line is not equal to placeholder_line from config' do
        it 'validates as changelog line' do
          expect(described_class.validates_as_changelog_line?("* Put your contribution here.\n")).to be false
        end
      end
    end

    describe 'valid?' do
      context 'when is equal to config placeholder line' do
        subject { Danger::Changelog::ChangelogPlaceholderLine.new("* Nothing yet here.\n") }

        it 'is valid' do
          expect(subject.valid?).to be true
        end
      end

      context 'when is not equal to config placeholder line' do
        subject { Danger::Changelog::ChangelogPlaceholderLine.new("* Your change here.\n") }

        it 'is not valid' do
          expect(subject.valid?).to be false
        end
      end
    end
  end

  context 'with a blank placeholder line' do
    before do
      Danger::Changelog.configure do |config|
        config.placeholder_line = nil
      end
    end

    describe 'validates_as_changelog_line?' do
      context 'when line is not blank' do
        it 'validates as changelog line' do
          expect(described_class.validates_as_changelog_line?("* Whatever.\n")).to be false
        end
      end
    end

    describe 'valid?' do
      context 'when is not blank' do
        subject { Danger::Changelog::ChangelogPlaceholderLine.new("* Your change here.\n") }

        it 'is not valid' do
          expect(subject.valid?).to be false
        end
      end
    end
  end
end