Memoize assets in adapters

lib/inline_svg/propshaft_asset_finder.rb

@@ -1,7 +1,7 @@
 module InlineSvg
   class PropshaftAssetFinder
     def self.assets
-      Rails.application.assets
+      @assets ||= Rails.application.assets
     end
 
     def self.find_asset(filename)
@@ -13,6 +13,10 @@ def self.match?
     rescue NameError
     end
 
+    def self.reset
+      @assets = nil
+    end
+
     def initialize(filename)
       @filename = filename
     end

lib/inline_svg/sprockets_asset_finder.rb

@@ -1,7 +1,7 @@
 module InlineSvg
   module SprocketsAssetFinder
     def self.assets
-      Rails.application.assets
+      @assets ||= Rails.application.assets
     end
 
     def self.find_asset(*args, **options)
@@ -12,5 +12,9 @@ def self.match?
       assets.respond_to?(:find_asset)
     rescue NameError
     end
+
+    def self.reset
+      @assets = nil
+    end
   end
 end

spec/inline_svg_spec.rb

@@ -28,10 +28,6 @@ def self.named(filename); end
     end
 
     context "asset finder" do
-      before do
-        InlineSvg.reset_configuration!
-      end
-
       context "when Sprockets is detected" do
         it "uses the Sprockets asset finder" do
           sprockets = double("Sprockets", find_asset: "some asset")
@@ -74,6 +70,12 @@ def self.named(filename); end
           end
         }.to raise_error(InlineSvg::Configuration::Invalid, /asset_finder should implement the #find_asset method/)
       end
+
+      after do
+        InlineSvg.reset_configuration!
+        InlineSvg::SprocketsAssetFinder.reset
+        InlineSvg::PropshaftAssetFinder.reset
+      end
     end
 
     context "configuring a custom asset file" do

spec/propshaft_asset_finder_spec.rb

@@ -20,4 +20,8 @@
       expect(InlineSvg::PropshaftAssetFinder.find_asset('some-file').pathname).to eq Pathname('/full/path/to/some-file')
     end
   end
+
+  after do
+    InlineSvg::PropshaftAssetFinder.reset
+  end
 end

spec/sprockets_asset_finder_spec.rb

@@ -8,4 +8,8 @@
 
     expect(described_class.find_asset("some-file")).to eq "some asset"
   end
+
+  after do
+    InlineSvg::SprocketsAssetFinder.reset
+  end
 end