test: cover AuthzArticlePolicy, destroy? and CacheHelpersTest

test/test_cache_helpers.rb

@@ -0,0 +1,67 @@
+require 'minitest/autorun'
+require 'prism'
+require 'tmpdir'
+require 'fileutils'
+
+class CacheHelpersTest < Minitest::Test
+  def setup
+    Prism::Cache.store.clear
+    @dir = Dir.mktmpdir('prism-cache-helpers')
+    FileUtils.mkdir_p(File.join(@dir, 'pages'))
+    @view = Prism::View.new(@dir)
+  end
+
+  def teardown
+    FileUtils.remove_entry(@dir)
+    Prism::Cache.store.clear
+  end
+
+  def write(relative, source)
+    File.write(File.join(@dir, relative), source)
+  end
+
+  def test_cache_block_renders_and_stores_the_fragment
+    write('pages/show.erb', '<% cache("greeting") do %><%= greeting %><% end %>')
+    result = @view.render('pages/show', locals: { greeting: 'hi' })
+    assert_equal 'hi', result
+    assert_equal 'hi', Prism::Cache.store.read('greeting')
+  end
+
+  def test_cache_block_is_not_reevaluated_on_a_hit
+    calls = []
+    write('pages/show.erb', '<% cache("counter") do %><%= track! %><% end %>')
+    @view = Prism::View.new(@dir, helpers: CounterHelper.new(calls))
+
+    first = @view.render('pages/show')
+    second = @view.render('pages/show')
+
+    assert_equal first, second
+    assert_equal 1, calls.size
+  end
+
+  def test_cache_key_can_be_an_array_mixing_scope_and_a_model
+    model = Struct.new(:cache_key).new('posts/7-42')
+    write('pages/show.erb', '<% cache([:sidebar, model]) do %>rendered<% end %>')
+    @view.render('pages/show', locals: { model: model })
+    assert @view.expand_cache_key([:sidebar, model]) == 'sidebar/posts/7-42'
+    assert_equal 'rendered', Prism::Cache.store.read('sidebar/posts/7-42')
+  end
+
+  def test_expires_in_evicts_the_entry_after_the_given_time
+    write('pages/show.erb', '<% cache("temp", expires_in: 0) do %>value<% end %>')
+    @view.render('pages/show')
+    sleep 0.01
+    assert_nil Prism::Cache.store.read('temp')
+  end
+
+  class CounterHelper
+    def initialize(calls)
+      @calls = calls
+    end
+
+    def track!
+      @calls << true
+      'x'
+    end
+  end
+end