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Versions: 10
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Contents
require 'spec_helper'
describe MyOperator do
describe '#to_gnu' do
it 'returns the gnu format' do
expect(subject.to_gnu).to eq('x**(pi)')
end
end
describe '#to_tex' do
it 'returns the tex format' do
expect(subject.to_tex).to eq('x^{\pi}')
end
end
describe '#to_f' do
subject { described_class.new(x: 2) }
it 'returns the result of the operation' do
expect(subject.to_f).to eq(2 ** Math::PI)
end
end
end
describe Danica::Operator::Inverse do
subject { described_class.new(:x) }
describe '#to_tex' do
it 'returns the formated tex string' do
expect(subject.to_tex).to eq('(x)^{-1}')
end
end
describe '#to_gnu' do
it 'returns the formated gnu string' do
expect(subject.to_gnu).to eq('(x) ** -1')
end
end
describe '#to_f' do
it do
expect { subject.to_f }.to raise_error(Danica::Exception::NotDefined)
end
context 'when value is defined' do
subject { described_class.new 2 }
it 'returns the calculated value' do
expect(subject.to_f).to eq(0.5)
end
end
end
describe '#calculate' do
it 'returns the calculated value' do
expect(subject.calculate(2)).to eq(0.5)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems