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
53
54
55
56
57
58
|
# frozen_string_literal: true
RSpec.describe Necromancer::Conversions, ".register" do
it "allows to register converter" do
context = described_class.new
converter = double(:converter, { source: :string, target: :numeric })
expect(context.register(converter)).to eq(true)
expect(context[:string, :numeric]).to eq(converter)
end
it "allows to register converter with no source" do
context = described_class.new
converter = double(:converter, { source: nil, target: :numeric })
expect(context.register(converter)).to eq(true)
expect(context[:none, :numeric]).to eq(converter)
end
it "allows to register converter with no target" do
context = described_class.new
converter = double(:converter, { source: :string, target: nil })
expect(context.register(converter)).to eq(true)
expect(context[:string, :none]).to eq(converter)
end
it "allows to register anonymous converter" do
conversions = described_class.new
conversions.register do |c|
c.source = :string
c.target = :upcase
c.convert = ->(value) { value.to_s.upcase }
end
expect(conversions[:string, :upcase].("magic")).to eq("MAGIC")
end
it "allows to register anonymous converter with class names" do
conversions = described_class.new
conversions.register do |c|
c.source = String
c.target = Array
c.convert = ->(value) { Array(value) }
end
expect(conversions[String, Array].("magic")).to eq(["magic"])
end
it "allows to register custom converter" do
conversions = described_class.new
stub_const("UpcaseConverter", Struct.new(:source, :target) do
def call(value)
value.to_s.upcase
end
end)
upcase_converter = UpcaseConverter.new(:string, :upcase)
expect(conversions.register(upcase_converter)).to be(true)
expect(conversions[:string, :upcase].("magic")).to eq("MAGIC")
end
end
|
