1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
require 'spec_helper'
require 'pathname'
describe Prawn::FontMetricCache do
let(:document) { Prawn::Document.new }
let(:font_metric_cache) { described_class.new(document) }
it 'starts with an empty cache' do
expect(font_metric_cache.instance_variable_get(:@cache)).to be_empty
end
it 'caches the width of the provided string' do
font_metric_cache.width_of('M', {})
expect(font_metric_cache.instance_variable_get(:@cache).size).to eq(1)
end
it 'onlies cache a single copy of the same string' do
font_metric_cache.width_of('M', {})
font_metric_cache.width_of('M', {})
expect(font_metric_cache.instance_variable_get(:@cache).size).to eq(1)
end
it 'caches different copies for different strings' do
font_metric_cache.width_of('M', {})
font_metric_cache.width_of('W', {})
expect(font_metric_cache.instance_variable_get(:@cache).entries.size)
.to eq 2
end
it 'caches different copies of the same string with different font sizes' do
font_metric_cache.width_of('M', {})
document.font_size 24
font_metric_cache.width_of('M', {})
expect(font_metric_cache.instance_variable_get(:@cache).entries.size)
.to eq 2
end
it 'caches different copies of the same string with different fonts' do
font_metric_cache.width_of('M', {})
document.font 'Courier'
font_metric_cache.width_of('M', {})
expect(font_metric_cache.instance_variable_get(:@cache).entries.size)
.to eq 2
end
end
|
