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# Copyright (c) Microsoft. All rights reserved.
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#   http://www.apache.org/licenses/LICENSE-2.0
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# See the License for the specific language governing permissions and
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require "integration/test_helper"
require "azure/blob/blob_service"

describe Azure::Blob::BlobService do
  subject { Azure::Blob::BlobService.new }
  after { TableNameHelper.clean }
  
  let(:container_name) { ContainerNameHelper.name }
  let(:blob_name) { "blobname" }
  let(:blob_name2) { "blobname2" }
  let(:length) { 2560 }
  before { 
    subject.create_container container_name
    subject.create_page_blob container_name, blob_name, length
    subject.create_page_blob container_name, blob_name2, length
  }
  
  describe '#create_blob_pages' do
    it 'creates pages in a page blob' do
      content = ""
      512.times.each{|i| content << "@" }

      subject.create_blob_pages container_name, blob_name, 0, 511, content
      subject.create_blob_pages container_name, blob_name, 1024, 1535, content

      ranges = subject.list_page_blob_ranges container_name, blob_name, { :start_range => 0, :end_range => 1536 }
      ranges[0][0].must_equal 0
      ranges[0][1].must_equal 511
      ranges[1][0].must_equal 1024
      ranges[1][1].must_equal 1535
    end
  end

  describe 'when the options hash is used' do
    it 'if none match is specified' do
      content = ""
      512.times.each{|i| content << "@" }

      blob = subject.create_blob_pages container_name, blob_name2, 0, 511, content

      assert_raises(Azure::Core::Http::HTTPError) do
        subject.create_blob_pages container_name, blob_name2, 1024, 1535, content, { :if_none_match => blob.properties[:etag] }
      end
    end

    it 'if match is specified' do
      content = ""
      512.times.each{|i| content << "@" }

      blob = subject.create_blob_pages container_name, blob_name, 0, 511, content
      subject.create_blob_pages container_name, blob_name, 1024, 1535, content, { :if_match => blob.properties[:etag] }
    end
  end

  describe "#clear_blob_pages" do
    before { 
      content = ""
      512.times.each{|i| content << "@" }

      subject.create_blob_pages container_name, blob_name, 0, 511, content
      subject.create_blob_pages container_name, blob_name, 1024, 1535, content
      subject.create_blob_pages container_name, blob_name, 2048, 2559, content

      ranges = subject.list_page_blob_ranges container_name, blob_name, { :start_range => 0, :end_range => 2560 }
      ranges.length.must_equal 3
      ranges[0][0].must_equal 0
      ranges[0][1].must_equal 511
      ranges[1][0].must_equal 1024
      ranges[1][1].must_equal 1535
      ranges[2][0].must_equal 2048
      ranges[2][1].must_equal 2559
    }

    describe "when both start_range and end_range are specified" do
      it 'clears the data in page blobs within the provided range' do
        subject.clear_blob_pages container_name, blob_name, 512, 1535

        ranges = subject.list_page_blob_ranges container_name, blob_name, { :start_range => 0, :end_range => 2560 }
        ranges.length.must_equal 2
        ranges[0][0].must_equal 0
        ranges[0][1].must_equal 511
        ranges[1][0].must_equal 2048
        ranges[1][1].must_equal 2559
      end
    end
  end

  describe '#list_page_blob_ranges' do
    before { 
      content = ""
      512.times.each{|i| content << "@" }

      subject.create_blob_pages container_name, blob_name, 0, 511, content
      subject.create_blob_pages container_name, blob_name, 1024, 1535, content
    }

    it 'lists the active blob pages' do
      ranges = subject.list_page_blob_ranges container_name, blob_name, { :start_range => 0, :end_range => 1536 }
      ranges[0][0].must_equal 0
      ranges[0][1].must_equal 511
      ranges[1][0].must_equal 1024
      ranges[1][1].must_equal 1535
    end
  end
end