1describe Scale::Node do
 2  class FakeNode
 3    include Scale::Node
 4    attribute :x, Integer
 5    attribute :y, Integer
 6    attribute :font_size_adjust, Float
 7
 8    def xml_tag
 9      :fake
10    end
11  end
12
13  subject { FakeNode.new }
14
15  describe "#xml_attributes" do
16    it "skips attributes that are not specified" do
17      expect(subject.xml_attributes).to be_empty
18    end
19  end
20
21  describe "#add" do
22    it 'adds a child node' do
23      child = Object.new
24      subject.add(child)
25      expect(subject).to include(child)
26    end
27  end
28
29  describe "#to_xml" do
30    it 'generates the full xml tree' do
31      grandchild = Scale::Rectangle.new(width: "100%", height: "100%", fill: "blue")
32      child = Scale::Rectangle.new(width: "100%", height: "100%", fill: "red")
33      child.add(grandchild)
34      subject.add(child)
35
36      expected = <<-XML
37<?xml version="1.0"?>
38<fake>
39  <rect width="100%" height="100%" fill="red">
40    <rect width="100%" height="100%" fill="blue"/>
41  </rect>
42</fake>
43      XML
44      expect(subject.to_xml).to eql(expected)
45    end
46
47    it 'replaces underscores in attribute names' do
48      subject.font_size_adjust = 0.5
49      expected = <<-XML
50<?xml version="1.0"?>
51<fake font-size-adjust="0.5"/>
52      XML
53      expect(subject.to_xml).to eql(expected)
54    end
55  end
56end