hanami-view/spec/unit/exposures_spec.rb

128 lines
3.3 KiB
Ruby

# frozen_string_literal: true
RSpec.describe Hanami::View::Exposures do
subject(:exposures) { described_class.new }
describe "#exposures" do
it "is empty by defalut" do
expect(exposures.exposures).to be_empty
end
end
describe "#add" do
it "creates and adds an exposure" do
proc = -> **_input { "hi" }
exposures.add :hello, proc
expect(exposures[:hello].name).to eq :hello
expect(exposures[:hello].proc).to eq proc
end
end
describe "#bind" do
subject(:bound_exposures) { exposures.bind(object) }
let(:object) do
Class.new do
def hello(_input)
"hi"
end
end.new
end
before do
exposures.add(:hello)
end
it "binds each of the exposures" do
expect(bound_exposures[:hello].proc).to eq object.method(:hello)
end
it "returns a new copy of the exposures" do
expect(exposures.exposures).not_to eql(bound_exposures.exposures)
end
end
describe "#call" do
describe "in general" do
before do
exposures.add(:greeting, -> greeting: { greeting.upcase })
exposures.add(:farewell, -> greeting { "#{greeting} and goodbye" })
end
subject(:locals) { exposures.(greeting: "hello") }
it "returns the values from calling the exposures" do
expect(locals).to eq(greeting: "HELLO", farewell: "HELLO and goodbye")
end
it "does not include values from private exposures" do
exposures.add(:hidden, -> **_input { "shh" }, private: true)
expect(locals).to include(:greeting, :farewell)
expect(locals).not_to include(:hidden)
end
end
describe "with block provided" do
before do
exposures.add(:greeting, -> greeting: { greeting.upcase })
exposures.add(:farewell, -> greeting { "#{greeting} and goodbye" })
end
subject(:locals) {
exposures.(greeting: "hello") do |value, exposure|
"#{value} from #{exposure.name}"
end
}
it "provides values determined from the block" do
expect(locals).to eq(
greeting: "HELLO from greeting",
farewell: "HELLO from greeting and goodbye from farewell"
)
end
end
describe "with default exposure values" do
it "returns 'default_value' from exposure" do
exposures.add(:name, default: "John")
locals = exposures.({})
expect(locals).to eq(name: "John")
end
it "returns values from arguments" do
exposures.add(:name, default: "John")
locals = exposures.(name: "William")
expect(locals).to eq(name: "William")
end
it "returns values from arguments even when value is nil" do
exposures.add(:name, default: "John")
locals = exposures.(name: nil)
expect(locals).to eq(name: nil)
end
it "returns value from proc" do
exposures.add(:name, -> name: { name.upcase }, default: "John")
locals = exposures.(name: "William")
expect(locals).to eq(name: "WILLIAM")
end
end
end
describe "#import" do
it "imports an exposure to the set" do
exposures_b = described_class.new
exposures.add(:name, -> name: { name.upcase }, default: "John")
exposures_b.import(:name, exposures[:name])
expect(exposures_b[:name]).to eq(exposures[:name])
end
end
end