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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::RelativePositioning::Range do
position_struct = Struct.new(:relative_position, :object, :positioned?)
item_a = position_struct.new(100, :x, true)
item_b = position_struct.new(200, :y, true)
before do
allow(item_a).to receive(:lhs_neighbour) { nil }
allow(item_a).to receive(:rhs_neighbour) { item_b }
allow(item_b).to receive(:lhs_neighbour) { item_a }
allow(item_b).to receive(:rhs_neighbour) { nil }
end
describe 'RelativePositioning.range' do
it 'raises if lhs and rhs are nil' do
expect { Gitlab::RelativePositioning.range(nil, nil) }.to raise_error(ArgumentError)
end
it 'raises an error if there is no extent' do
expect { Gitlab::RelativePositioning.range(item_a, item_a) }.to raise_error(ArgumentError)
end
it 'constructs a closed range when both termini are provided' do
range = Gitlab::RelativePositioning.range(item_a, item_b)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::Range)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::ClosedRange)
end
it 'constructs a starting-from range when only the LHS is provided' do
range = Gitlab::RelativePositioning.range(item_a, nil)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::Range)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::StartingFrom)
end
it 'constructs an ending-at range when only the RHS is provided' do
range = Gitlab::RelativePositioning.range(nil, item_b)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::Range)
expect(range).to be_a_kind_of(Gitlab::RelativePositioning::EndingAt)
end
end
it 'infers neighbours correctly' do
starting_at_a = Gitlab::RelativePositioning.range(item_a, nil)
ending_at_b = Gitlab::RelativePositioning.range(nil, item_b)
expect(starting_at_a).to eq(ending_at_b)
end
describe '#open_on_left?' do
where(:lhs, :rhs, :expected_result) do
[
[item_a, item_b, false],
[item_a, nil, false],
[nil, item_b, false],
[item_b, nil, false],
[nil, item_a, true]
]
end
with_them do
it 'is true if there is no LHS terminus' do
range = Gitlab::RelativePositioning.range(lhs, rhs)
expect(range.open_on_left?).to be(expected_result)
end
end
end
describe '#open_on_right?' do
where(:lhs, :rhs, :expected_result) do
[
[item_a, item_b, false],
[item_a, nil, false],
[nil, item_b, false],
[item_b, nil, true],
[nil, item_a, false]
]
end
with_them do
it 'is true if there is no RHS terminus' do
range = Gitlab::RelativePositioning.range(lhs, rhs)
expect(range.open_on_right?).to be(expected_result)
end
end
end
describe '#cover?' do
item_c = position_struct.new(150, :z, true)
item_d = position_struct.new(050, :w, true)
item_e = position_struct.new(250, :r, true)
item_f = position_struct.new(positioned?: false)
item_ax = position_struct.new(100, :not_x, true)
item_bx = position_struct.new(200, :not_y, true)
where(:lhs, :rhs, :item, :expected_result) do
[
[item_a, item_b, item_a, true],
[item_a, item_b, item_b, true],
[item_a, item_b, item_c, true],
[item_a, item_b, item_d, false],
[item_a, item_b, item_e, false],
[item_a, item_b, item_ax, false],
[item_a, item_b, item_bx, false],
[item_a, item_b, item_f, false],
[item_a, item_b, nil, false],
[nil, item_b, item_a, true],
[nil, item_b, item_b, true],
[nil, item_b, item_c, true],
[nil, item_b, item_d, false],
[nil, item_b, item_e, false],
[nil, item_b, item_ax, false],
[nil, item_b, item_bx, false],
[nil, item_b, item_f, false],
[nil, item_b, nil, false],
[item_a, nil, item_a, true],
[item_a, nil, item_b, true],
[item_a, nil, item_c, true],
[item_a, nil, item_d, false],
[item_a, nil, item_e, false],
[item_a, nil, item_ax, false],
[item_a, nil, item_bx, false],
[item_a, nil, item_f, false],
[item_a, nil, nil, false],
[nil, item_a, item_a, true],
[nil, item_a, item_b, false],
[nil, item_a, item_c, false],
[nil, item_a, item_d, true],
[nil, item_a, item_e, false],
[nil, item_a, item_ax, false],
[nil, item_a, item_bx, false],
[nil, item_a, item_f, false],
[nil, item_a, nil, false],
[item_b, nil, item_a, false],
[item_b, nil, item_b, true],
[item_b, nil, item_c, false],
[item_b, nil, item_d, false],
[item_b, nil, item_e, true],
[item_b, nil, item_ax, false],
[item_b, nil, item_bx, false],
[item_b, nil, item_f, false],
[item_b, nil, nil, false]
]
end
with_them do
it 'is true when the object is within the bounds of the range' do
range = Gitlab::RelativePositioning.range(lhs, rhs)
expect(range.cover?(item)).to be(expected_result)
end
end
end
end
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