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Contents
require 'spec_helper' require 'dentaku/ast/functions/avg' require 'dentaku' describe 'Dentaku::AST::Function::Avg' do it 'returns the average of an array of Numeric values' do result = Dentaku('AVG(1, x, 1.8)', x: 2.3) expect(result).to eq(1.7) end it 'returns the average of a single entry array of a Numeric value' do result = Dentaku('AVG(x)', x: 2.3) expect(result).to eq(2.3) end it 'returns the average even if a String is passed' do result = Dentaku('AVG(1, x, 1.8)', x: '2.3') expect(result).to eq(1.7) end it 'returns the average even if an array is passed' do result = Dentaku('AVG(1, x, 2.3)', x: [4, 5]) expect(result).to eq(3.075) end context 'checking errors' do let(:calculator) { Dentaku::Calculator.new } it 'raises an error if no arguments are passed' do expect { calculator.evaluate!('AVG()') }.to raise_error(Dentaku::ArgumentError) end it 'raises an error if an empty array is passed' do expect { calculator.evaluate!('AVG(x)', x: []) }.to raise_error(Dentaku::ArgumentError) end end end
Version data entries
6 entries across 6 versions & 2 rubygems