Andy Meneely
11 years ago
7 changed files with 173 additions and 10 deletions
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require 'squib/args/arg_loader' |
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module Squib |
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# @api private |
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module Args |
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class ScaleBox |
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include ArgLoader |
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def initialize(deck) |
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@deck = deck |
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end |
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def self.parameters |
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{ x: 0, y: 0, |
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width: :native, height: :native |
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} |
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end |
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def self.expanding_parameters |
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parameters.keys # all of them |
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end |
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def self.params_with_units |
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parameters.keys # all of them |
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end |
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def validate_width(arg, i) |
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return @deck.width if arg.to_s == 'deck' |
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return :native if arg.to_s == 'native' |
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return arg if arg.respond_to? :to_f |
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if arg.to_s == 'scale' |
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raise 'if width is :scale, height must be a number' unless height[i].respond_to? :to_f |
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return arg |
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end |
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raise 'width must be a number, :scale, :native, or :deck' |
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end |
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def validate_height(arg, i) |
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return @deck.height if arg.to_s == 'deck' |
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return :native if arg.to_s == 'native' |
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return arg if arg.respond_to? :to_f |
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if arg.to_s == 'scale' |
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raise 'if height is \'scale\', width must be a number' unless width[i].respond_to? :to_f |
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return arg |
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end |
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raise 'height must be a number, :scale, :native, or :deck' |
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end |
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end |
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end |
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end |
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@ -0,0 +1,71 @@
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require 'spec_helper' |
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require 'squib/args/scale_box' |
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describe Squib::Args::ScaleBox do |
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subject(:box) { Squib::Args::ScaleBox.new({}) } |
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context 'unit conversion' do |
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it 'converts units on all args' do |
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args = {x: ['1in', '2in'], y: 300, width: '1in', height: '1in'} |
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box.load!(args, expand_by: 2) |
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expect(box).to have_attributes( |
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x: [300, 600], |
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y: [300, 300], |
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width: [300, 300], |
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height: [300, 300], |
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) |
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end |
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end |
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context 'validation' do |
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it 'replaces with deck width and height' do |
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args = {width: :deck, height: :deck} |
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deck = OpenStruct.new(width: 123, height: 456) |
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box = Squib::Args::Box.new(deck) |
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box.load!(args, expand_by: 1) |
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expect(box).to have_attributes(width: [123], height: [456]) |
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end |
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it 'allows :native' do |
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args = {width: :native, height: :native} |
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box.load!(args, expand_by: 1) |
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expect(box).to have_attributes(width: [:native], height: [:native]) |
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end |
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it 'allows native to be a string' do |
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args = {width: 'native'} |
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box.load!(args, expand_by: 1) |
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expect(box).to have_attributes(width: [:native], height: [:native]) |
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end |
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it 'allows :scale on width if height has to_f' do |
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args = {width: :scale, height: 75} |
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box.load!(args, expand_by: 1) |
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expect(box).to have_attributes(width: [:scale], height: [75]) |
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end |
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it 'allows :scale on width if height has to_f' do |
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args = {width: 75, height: :scale} |
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box.load!(args, expand_by: 1) |
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expect(box).to have_attributes(width: [75], height: [:scale]) |
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end |
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it 'disallows both :scale' do |
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args = {width: :scale, height: :scale} |
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expect { box.load!(args, expand_by: 1) }.to raise_error('if width is :scale, height must be a number') |
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end |
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it 'disallows non-to_f on width' do |
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args = {width: :foo} |
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expect { box.load!(args, expand_by: 1) }.to raise_error('width must be a number, :scale, :native, or :deck') |
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end |
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it 'disallows non-to_f on height' do |
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args = {height: :foo} |
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expect { box.load!(args, expand_by: 1) }.to raise_error('height must be a number, :scale, :native, or :deck') |
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end |
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end |
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end |
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