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begin
require_relative '../lib/inline_svg'
rescue LoadError
require "inline_svg"
end
class MyCustomTransform
def self.create_with_value(value); end
def transform(doc); end
end
class MyInvalidCustomTransformKlass
def transform(doc); end
end
class MyInvalidCustomTransformInstance
def self.create_with_value(value); end
end
class MyCustomAssetFile
def self.named(filename); end
end
describe InlineSvg do
describe "configuration" do
context "when a block is not given" do
it "complains" do
expect do
InlineSvg.configure
end.to raise_error(InlineSvg::Configuration::Invalid)
end
end
context "asset finder" do
it "allows an asset finder to be assigned" do
sprockets = double('SomethingLikeSprockets', find_asset: 'some asset')
InlineSvg.configure do |config|
config.asset_finder = sprockets
end
expect(InlineSvg.configuration.asset_finder).to eq sprockets
end
it "falls back to StaticAssetFinder when the provided asset finder does not implement #find_asset" do
InlineSvg.configure do |config|
config.asset_finder = 'Not a real asset finder'
end
expect(InlineSvg.configuration.asset_finder).to eq InlineSvg::StaticAssetFinder
end
end
context "configuring a custom asset file" do
it "falls back to the built-in asset file implementation by default" do
expect(InlineSvg.configuration.asset_file).to eq(InlineSvg::AssetFile)
end
it "adds a collaborator that meets the interface specification" do
InlineSvg.configure do |config|
config.asset_file = MyCustomAssetFile
end
expect(InlineSvg.configuration.asset_file).to eq MyCustomAssetFile
end
it "rejects a collaborator that does not conform to the interface spec" do
bad_asset_file = double("bad_asset_file")
expect do
InlineSvg.configure do |config|
config.asset_file = bad_asset_file
end
end.to raise_error(InlineSvg::Configuration::Invalid, /asset_file should implement the #named method/)
end
it "rejects a collaborator that implements the correct interface with the wrong arity" do
bad_asset_file = double("bad_asset_file", named: nil)
expect do
InlineSvg.configure do |config|
config.asset_file = bad_asset_file
end
end.to raise_error(InlineSvg::Configuration::Invalid, /asset_file should implement the #named method with arity 1/)
end
end
context "configuring the default svg-not-found class" do
it "sets the class name" do
InlineSvg.configure do |config|
config.svg_not_found_css_class = 'missing-svg'
end
expect(InlineSvg.configuration.svg_not_found_css_class).to eq 'missing-svg'
end
end
context "configuring custom transformation" do
it "allows a custom transformation to be added" do
InlineSvg.configure do |config|
config.add_custom_transformation(attribute: :my_transform, transform: MyCustomTransform)
end
expect(InlineSvg.configuration.custom_transformations).to eq({my_transform: {attribute: :my_transform, transform: MyCustomTransform}})
end
it "rejects transformations that do not implement .create_with_value" do
expect do
InlineSvg.configure do |config|
config.add_custom_transformation(attribute: :irrelevant, transform: MyInvalidCustomTransformKlass)
end
end.to raise_error(InlineSvg::Configuration::Invalid, /#{MyInvalidCustomTransformKlass} should implement the .create_with_value and #transform methods/)
end
it "rejects transformations that does not implement #transform" do
expect do
InlineSvg.configure do |config|
config.add_custom_transformation(attribute: :irrelevant, transform: MyInvalidCustomTransformInstance)
end
end.to raise_error(InlineSvg::Configuration::Invalid, /#{MyInvalidCustomTransformInstance} should implement the .create_with_value and #transform methods/)
end
it "rejects transformations that are not classes" do
expect do
InlineSvg.configure do |config|
config.add_custom_transformation(attribute: :irrelevant, transform: :not_a_class)
end
end.to raise_error(InlineSvg::Configuration::Invalid, /#{:not_a_class} should implement the .create_with_value and #transform methods/)
end
end
end
end
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