49 lines
1.7 KiB
Ruby
49 lines
1.7 KiB
Ruby
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require 'rails_helper'
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RSpec.describe UnitConversion::ValueUnit do
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def check_vu(vu, value, unit)
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expect(vu.value).to be_a UnitConversion::ParsedNumber
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expect(vu.raw_value).to eq value
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if unit.present?
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expect(vu.unit).to be_a UnitConversion::ParsedUnit
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expect(vu.unit.to_s).to eq unit
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else
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expect(vu.unit).to be_nil
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expect(vu).to be_a UnitConversion::ValueNoUnit
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end
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end
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describe '.for' do
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it 'Converts single strings' do
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check_vu(UnitConversion::ValueUnit.for('5 cups'), 5, 'cup')
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check_vu(UnitConversion::ValueUnit.for('5'), 5, nil)
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check_vu(UnitConversion::ValueUnit.for('1/3 fl oz'), Rational(1,3), 'foz')
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end
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it 'Converts a pair of strings' do
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check_vu(UnitConversion::ValueUnit.for('5', 'cups'), 5, 'cup')
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check_vu(UnitConversion::ValueUnit.for('5', ''), 5, nil)
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check_vu(UnitConversion::ValueUnit.for('1/3', 'fl oz'), Rational(1,3), 'foz')
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end
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it 'Converts a bare Numeric' do
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check_vu(UnitConversion::ValueUnit.for(5, 'cups'), 5, 'cup')
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check_vu(UnitConversion::ValueUnit.for(5, ''), 5, nil)
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check_vu(UnitConversion::ValueUnit.for(Rational(1,3), 'fl oz'), Rational(1,3), 'foz')
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check_vu(UnitConversion::ValueUnit.for(2.5, 'tsp'), 2.5, 'teaspoon')
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end
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it 'Converts ParsedNumber and a string' do
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check_vu(UnitConversion::ValueUnit.for(UnitConversion::ParsedNumber.new('5'), 'cups'), 5, 'cup')
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check_vu(UnitConversion::ValueUnit.for(UnitConversion::ParsedNumber.new('5'), nil), 5, nil)
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end
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it 'Converts parsed objects' do
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check_vu(UnitConversion::ValueUnit.for(UnitConversion::ParsedNumber.new('5'), UnitConversion::ParsedUnit.new('cups')), 5, 'cup')
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end
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end
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end
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