RSpec.describe 'exposures' do
let(:context) { Struct.new(:title, :assets).new('dry-view rocks!', -> input { "#{input}.jpg" }) }
it 'uses exposures with blocks to build view locals' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users'
config.default_format = :html
end
expose :users do |users:|
users.map { |user|
user.merge(name: user[:name].upcase)
}
end
end.new
users = [
{ name: 'Jane', email: 'jane@doe.org' },
{ name: 'Joe', email: 'joe@doe.org' }
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!| JANE | jane@doe.org |
| JOE | joe@doe.org |
'
)
end
it 'gives the exposure blocks access to the view controller instance' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users'
config.default_format = :html
end
attr_reader :prefix
def initialize
super
@prefix = "My friend "
end
expose :users do |users:|
users.map { |user|
user.merge(name: prefix + user[:name])
}
end
end.new
users = [
{ name: 'Jane', email: 'jane@doe.org' },
{ name: 'Joe', email: 'joe@doe.org' }
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!| My friend Jane | jane@doe.org |
| My friend Joe | joe@doe.org |
| JANE | jane@doe.org |
| JOE | joe@doe.org |
| Jane | jane@doe.org |
| Joe | joe@doe.org |
- Jane (jane@doe.org)
- Joe (joe@doe.org)
2 users
'
)
end
it 'allows exposures to depend on each other and access keywords args from input' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'greeting'
config.default_format = :html
end
expose :greeting do |prefix, greeting:|
"#{prefix} #{greeting}"
end
expose :prefix do
'Hello'
end
end.new
expect(vc.(greeting: 'From dry-view internals', context: context)).to eql(
'dry-view rocks!Hello From dry-view internals
'
)
end
it 'set default values for keyword arguments' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'greeting'
config.default_format = :html
end
expose :greeting do |prefix, greeting: 'From the defaults'|
"#{prefix} #{greeting}"
end
expose :prefix do
'Hello'
end
end.new
expect(vc.(context: context)).to eql(
'dry-view rocks!Hello From the defaults
'
)
end
it 'only pass keywords arguments that are needit in the block and allow for default values' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'edit'
config.default_format = :html
end
expose :pretty_id do |id:|
"Beautiful #{id}"
end
expose :errors do |errors: []|
errors
end
end.new
expect(vc.(id: 1, context: context)).to eql(
'dry-view rocks!Edit
No Errors
Beautiful 1
'
)
end
it 'supports defining multiple exposures at once' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count'
config.default_format = :html
end
expose :users, :users_count
private
def users_count(users:)
"#{users.length} users"
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
expect(vc.(users: users, context: context)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
2 users
'
)
end
it 'allows exposures to be hidden from the view' do
vc = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count'
config.default_format = :html
end
private_expose :prefix do
"COUNT: "
end
expose :users
expose :users_count do |prefix, users:|
"#{prefix}#{users.length} users"
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
input = {users: users, context: context}
expect(vc.(input)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
COUNT: 2 users
'
)
expect(vc.locals(input)).to include(:users, :users_count)
expect(vc.locals(input)).not_to include(:prefix)
end
it 'inherit exposures from parent class' do
parent = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count_inherit'
config.default_format = :html
end
private_expose :prefix do
"COUNT: "
end
expose :users
expose :users_count do |prefix, users:|
"#{prefix}#{users.length} users"
end
end
child = Class.new(parent) do
expose :child_expose do
'Child expose'
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
input = {users: users, context: context}
expect(child.(input)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
COUNT: 2 users
Child expose
'
)
expect(child.locals(input)).to include(:users, :users_count, :child_expose)
expect(child.locals(input)).not_to include(:prefix)
end
it 'inherit exposures from parent class and allow to override them' do
parent = Class.new(Dry::View::Controller) do
configure do |config|
config.paths = SPEC_ROOT.join('fixtures/templates')
config.layout = 'app'
config.template = 'users_with_count_inherit'
config.default_format = :html
end
private_expose :prefix do
"COUNT: "
end
expose :users
expose :users_count do |prefix, users:|
"#{prefix}#{users.length} users"
end
end
child = Class.new(parent) do
expose :child_expose do
'Child expose'
end
expose :users_count do |prefix, users:|
"#{prefix}#{users.length} users overrided"
end
end.new
users = [
{name: 'Jane', email: 'jane@doe.org'},
{name: 'Joe', email: 'joe@doe.org'}
]
input = {users: users, context: context}
expect(child.(input)).to eql(
'dry-view rocks!- Jane (jane@doe.org)
- Joe (joe@doe.org)
COUNT: 2 users overrided
Child expose
'
)
expect(child.locals(input)).to include(:users, :users_count, :child_expose)
expect(child.locals(input)).not_to include(:prefix)
end
end