require 'spec_helper'

describe Gitlab::Git::Attributes, seed_helper: true do
  let(:path) do
    File.join(SEED_STORAGE_PATH, 'with-git-attributes.git')
  end

  subject { described_class.new(path) }

  describe '#attributes' do
    context 'using a path with attributes' do
      it 'returns the attributes as a Hash' do
        expect(subject.attributes('test.txt')).to eq({ 'text' => true })
      end

      it 'returns a Hash containing multiple attributes' do
        expect(subject.attributes('test.sh')).
          to eq({ 'eol' => 'lf', 'gitlab-language' => 'shell' })
      end

      it 'returns a Hash containing attributes for a file with multiple extensions' do
        expect(subject.attributes('test.haml.html')).
          to eq({ 'gitlab-language' => 'haml' })
      end

      it 'returns a Hash containing attributes for a file in a directory' do
        expect(subject.attributes('foo/bar.txt')).to eq({ 'foo' => true })
      end

      it 'returns a Hash containing attributes with query string parameters' do
        expect(subject.attributes('foo.cgi')).
          to eq({ 'key' => 'value?p1=v1&p2=v2' })
      end

      it 'returns a Hash containing the attributes for an absolute path' do
        expect(subject.attributes('/test.txt')).to eq({ 'text' => true })
      end

      it 'returns a Hash containing the attributes when a pattern is defined using an absolute path' do
        # When a path is given without a leading slash it should still match
        # patterns defined with a leading slash.
        expect(subject.attributes('foo.png')).
          to eq({ 'gitlab-language' => 'png' })

        expect(subject.attributes('/foo.png')).
          to eq({ 'gitlab-language' => 'png' })
      end

      it 'returns an empty Hash for a defined path without attributes' do
        expect(subject.attributes('bla/bla.txt')).to eq({})
      end

      context 'when the "binary" option is set for a path' do
        it 'returns true for the "binary" option' do
          expect(subject.attributes('test.binary')['binary']).to eq(true)
        end

        it 'returns false for the "diff" option' do
          expect(subject.attributes('test.binary')['diff']).to eq(false)
        end
      end
    end

    context 'using a path without any attributes' do
      it 'returns an empty Hash' do
        expect(subject.attributes('test.foo')).to eq({})
      end
    end
  end

  describe '#patterns' do
    it 'parses a file with entries' do
      expect(subject.patterns).to be_an_instance_of(Hash)
    end

    it 'parses an entry that uses a tab to separate the pattern and attributes' do
      expect(subject.patterns[File.join(path, '*.md')]).
        to eq({ 'gitlab-language' => 'markdown' })
    end

    it 'stores patterns in reverse order' do
      first = subject.patterns.to_a[0]

      expect(first[0]).to eq(File.join(path, 'bla/bla.txt'))
    end

    # It's a bit hard to test for something _not_ being processed. As such we'll
    # just test the number of entries.
    it 'ignores any comments and empty lines' do
      expect(subject.patterns.length).to eq(10)
    end

    it 'does not parse anything when the attributes file does not exist' do
      expect(File).to receive(:exist?).
        with(File.join(path, 'info/attributes')).
        and_return(false)

      expect(subject.patterns).to eq({})
    end
  end

  describe '#parse_attributes' do
    it 'parses a boolean attribute' do
      expect(subject.parse_attributes('text')).to eq({ 'text' => true })
    end

    it 'parses a negated boolean attribute' do
      expect(subject.parse_attributes('-text')).to eq({ 'text' => false })
    end

    it 'parses a key-value pair' do
      expect(subject.parse_attributes('foo=bar')).to eq({ 'foo' => 'bar' })
    end

    it 'parses multiple attributes' do
      input = 'boolean key=value -negated'

      expect(subject.parse_attributes(input)).
        to eq({ 'boolean' => true, 'key' => 'value', 'negated' => false })
    end

    it 'parses attributes with query string parameters' do
      expect(subject.parse_attributes('foo=bar?baz=1')).
        to eq({ 'foo' => 'bar?baz=1' })
    end
  end

  describe '#each_line' do
    it 'iterates over every line in the attributes file' do
      args = [String] * 14 # the number of lines in the file

      expect { |b| subject.each_line(&b) }.to yield_successive_args(*args)
    end

    it 'does not yield when the attributes file does not exist' do
      expect(File).to receive(:exist?).
        with(File.join(path, 'info/attributes')).
        and_return(false)

      expect { |b| subject.each_line(&b) }.not_to yield_control
    end

    it 'does not yield when the attributes file has an unsupported encoding' do
      path = File.join(SEED_STORAGE_PATH, 'with-invalid-git-attributes.git')
      attrs = described_class.new(path)

      expect { |b| attrs.each_line(&b) }.not_to yield_control
    end
  end
end
