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37 lines
917 B
Ruby
37 lines
917 B
Ruby
require 'rails_helper'
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describe FrameDiff do
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let(:frame_diff) { described_class.new(line_changes, cursor_changes) }
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let(:line_changes) { { 0 => line_0, 2 => line_2 } }
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let(:cursor_changes) { { x: 1 } }
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let(:line_0) { double('line_0') }
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let(:line_2) { double('line_2') }
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describe '#as_json' do
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subject { frame_diff.as_json }
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it 'includes line changes and cursor changes' do
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expect(subject).to eq({ :lines => { 0 => line_0, 2 => line_2 },
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:cursor => cursor_changes })
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end
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context "when there are no line changes" do
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let(:line_changes) { {} }
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it 'skips the lines hash' do
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expect(subject).not_to have_key(:lines)
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end
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end
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context "when there are no cursor changes" do
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let(:cursor_changes) { {} }
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it 'skips the cursor hash' do
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expect(subject).not_to have_key(:cursor)
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end
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end
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end
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end
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