require 'spec_helper'

describe Danger::Changelog::ChangelogFile do
  subject do
    described_class.new(filename).tap(&:parse)
  end

  describe 'with the default format checker' do
    context 'minimal example' do
      let(:filename) { File.expand_path('fixtures/minimal.md', __dir__) }

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

      it 'bad_lines?' do
        expect(subject.bad_lines).to eq []
        expect(subject.bad_lines?).to be false
      end

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

      it 'has your contribution here' do
        expect(subject.global_failures?).to be false
      end
    end

    context 'missing your contribution here' do
      let(:filename) { File.expand_path('fixtures/missing_your_contribution_here.md', __dir__) }

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

      it 'is missing your contribution here' do
        expect(subject.global_failures?).to be true
      end
    end

    context 'does not exist' do
      let(:filename) { 'whatever.md' }

      it 'exists?' do
        expect(subject.exists?).to be false
      end

      it 'bad_lines?' do
        expect(subject.bad_lines).to be_empty
        expect(subject.bad_lines?).to be false
      end
    end

    context 'with bad lines' do
      let(:filename) { File.expand_path('fixtures/lines.md', __dir__) }

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

      it 'reports all bad lines' do
        expect(subject.bad_lines).to eq [
          ["Missing star - [@dblock](https://github.com/dblock).\n", 'does not start with a star, does not include a pull request link'],
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1) - Not a colon - [@dblock](https://github.com/dblock).\n"],
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1): No final period - [@dblock](https://github.com/dblock)\n", 'is missing a period at the end of the line'],
          ["# [#1](https://github.com/dblock/danger-changelog/pull/1): Hash instead of star - [@dblock](https://github.com/dblock).\n", 'does not start with a star'],
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1): Extra period. - [@dblock](https://github.com/dblock).\n", 'has an extra period or comma at the end of the description'],
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1): Unbalanced ( - [@dblock](https://github.com/dblock).\n", 'too many parenthesis'],
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1): Unbalanced ] - [@dblock](https://github.com/dblock).\n", 'too many parenthesis']
        ]
      end

      it 'has your contribution here' do
        expect(subject.global_failures?).to be false
      end
    end

    context 'with a line that has an extra trailing space' do
      let(:filename) { File.expand_path('fixtures/extra_trailing_space.md', __dir__) }

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

      it 'reports all bad lines' do
        expect(subject.bad_lines).to eq [
          ["* [#1](https://github.com/dblock/danger-changelog/pull/1): Extra trailing space - [@dblock](https://github.com/dblock). \n", 'has an extra trailing space, is missing a period at the end of the line']
        ]
      end
    end

    context 'with bad dates' do
      let(:filename) { File.expand_path('fixtures/dates.md', __dir__) }

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

      it 'reports all bad dates' do
        expect(subject.bad_lines).to eq [
          ["### 1.2.3 (1/2/2018)\n"],
          ["### 1.2.3 (2018/13/1)\n"],
          ["### 1.2.3 (2018/13)\n"],
          ["### 1.2.3 (2018/1/1/3)\n"]
        ]
      end
    end

    context 'with bad semver' do
      let(:filename) { File.expand_path('fixtures/semver.md', __dir__) }

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

      it 'reports all bad dates' do
        expect(subject.bad_lines).to eq [
          ["### 0 (2018/1/1)\n"],
          ["### 0. (2018/1/1)\n"],
          ["### 0.1. (2018/1/1)\n"]
        ]
      end
    end

    context 'with imbalanced parenthesis' do
      let(:filename) { File.expand_path('fixtures/imbalanced.md', __dir__) }

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

      it 'reports all bad lines' do
        expect(subject.bad_lines).to eq [
          ["### 0.0.0)\n"],
          ["### (0.0.1\n"],
          ["### 1.2.3 (2018/1/1\n"],
          ["### 0.1.0 2018/1/1)\n"],
          ["### 0 ((2018/1/1)\n"],
          ["### 0. [2018/1/1)\n"],
          ["### 0.1. (2018/1/1)]\n"]
        ]
      end
    end
  end
end