Add failing spec for mocked component without template

.tool-versions

@@ -1 +1 @@
-ruby 3.4.1
+ruby 3.4.2

Gemfile.lock

@@ -9,65 +9,65 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (8.0.1)
-      actionpack (= 8.0.1)
-      activesupport (= 8.0.1)
+    actioncable (8.0.2)
+      actionpack (= 8.0.2)
+      activesupport (= 8.0.2)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
       zeitwerk (~> 2.6)
-    actionmailbox (8.0.1)
-      actionpack (= 8.0.1)
-      activejob (= 8.0.1)
-      activerecord (= 8.0.1)
-      activestorage (= 8.0.1)
-      activesupport (= 8.0.1)
+    actionmailbox (8.0.2)
+      actionpack (= 8.0.2)
+      activejob (= 8.0.2)
+      activerecord (= 8.0.2)
+      activestorage (= 8.0.2)
+      activesupport (= 8.0.2)
       mail (>= 2.8.0)
-    actionmailer (8.0.1)
-      actionpack (= 8.0.1)
-      actionview (= 8.0.1)
-      activejob (= 8.0.1)
-      activesupport (= 8.0.1)
+    actionmailer (8.0.2)
+      actionpack (= 8.0.2)
+      actionview (= 8.0.2)
+      activejob (= 8.0.2)
+      activesupport (= 8.0.2)
       mail (>= 2.8.0)
       rails-dom-testing (~> 2.2)
-    actionpack (8.0.1)
-      actionview (= 8.0.1)
-      activesupport (= 8.0.1)
+    actionpack (8.0.2)
+      actionview (= 8.0.2)
+      activesupport (= 8.0.2)
       nokogiri (>= 1.8.5)
       rack (>= 2.2.4)
       rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
       useragent (~> 0.16)
-    actiontext (8.0.1)
-      actionpack (= 8.0.1)
-      activerecord (= 8.0.1)
-      activestorage (= 8.0.1)
-      activesupport (= 8.0.1)
+    actiontext (8.0.2)
+      actionpack (= 8.0.2)
+      activerecord (= 8.0.2)
+      activestorage (= 8.0.2)
+      activesupport (= 8.0.2)
       globalid (>= 0.6.0)
       nokogiri (>= 1.8.5)
-    actionview (8.0.1)
-      activesupport (= 8.0.1)
+    actionview (8.0.2)
+      activesupport (= 8.0.2)
       builder (~> 3.1)
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activejob (8.0.1)
-      activesupport (= 8.0.1)
+    activejob (8.0.2)
+      activesupport (= 8.0.2)
       globalid (>= 0.3.6)
-    activemodel (8.0.1)
-      activesupport (= 8.0.1)
-    activerecord (8.0.1)
-      activemodel (= 8.0.1)
-      activesupport (= 8.0.1)
+    activemodel (8.0.2)
+      activesupport (= 8.0.2)
+    activerecord (8.0.2)
+      activemodel (= 8.0.2)
+      activesupport (= 8.0.2)
       timeout (>= 0.4.0)
-    activestorage (8.0.1)
-      actionpack (= 8.0.1)
-      activejob (= 8.0.1)
-      activerecord (= 8.0.1)
-      activesupport (= 8.0.1)
+    activestorage (8.0.2)
+      actionpack (= 8.0.2)
+      activejob (= 8.0.2)
+      activerecord (= 8.0.2)
+      activesupport (= 8.0.2)
       marcel (~> 1.0)
-    activesupport (8.0.1)
+    activesupport (8.0.2)
       base64
       benchmark (>= 0.3)
       bigdecimal
@@ -153,7 +153,7 @@ GEM
     jbuilder (2.13.0)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
-    json (2.10.1)
+    json (2.10.2)
     language_server-protocol (3.17.0.4)
     lint_roller (1.1.0)
     logger (1.6.6)
@@ -173,7 +173,7 @@ GEM
     method_source (1.1.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.8)
-    minitest (5.25.4)
+    minitest (5.25.5)
     mutex_m (0.3.0)
     net-imap (0.5.6)
       date
@@ -218,30 +218,30 @@ GEM
       rack (>= 1.3)
     rackup (2.2.1)
       rack (>= 3)
-    rails (8.0.1)
-      actioncable (= 8.0.1)
-      actionmailbox (= 8.0.1)
-      actionmailer (= 8.0.1)
-      actionpack (= 8.0.1)
-      actiontext (= 8.0.1)
-      actionview (= 8.0.1)
-      activejob (= 8.0.1)
-      activemodel (= 8.0.1)
-      activerecord (= 8.0.1)
-      activestorage (= 8.0.1)
-      activesupport (= 8.0.1)
+    rails (8.0.2)
+      actioncable (= 8.0.2)
+      actionmailbox (= 8.0.2)
+      actionmailer (= 8.0.2)
+      actionpack (= 8.0.2)
+      actiontext (= 8.0.2)
+      actionview (= 8.0.2)
+      activejob (= 8.0.2)
+      activemodel (= 8.0.2)
+      activerecord (= 8.0.2)
+      activestorage (= 8.0.2)
+      activesupport (= 8.0.2)
       bundler (>= 1.15.0)
-      railties (= 8.0.1)
+      railties (= 8.0.2)
     rails-dom-testing (2.2.0)
       activesupport (>= 5.0.0)
       minitest
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.6.2)
       loofah (~> 2.21)
       nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
-    railties (8.0.1)
-      actionpack (= 8.0.1)
-      activesupport (= 8.0.1)
+    railties (8.0.2)
+      actionpack (= 8.0.2)
+      activesupport (= 8.0.2)
       irb (~> 1.13)
       rackup (>= 1.0.0)
       rake (>= 12.2)
@@ -272,9 +272,10 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.13.2)
-    rubocop (1.71.2)
+    rubocop (1.73.2)
       json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
@@ -286,9 +287,10 @@ GEM
       parser (>= 3.3.1.0)
     rubocop-md (1.2.4)
       rubocop (>= 1.45)
-    rubocop-performance (1.23.1)
-      rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
+    rubocop-performance (1.24.0)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.72.1, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
     ruby-progressbar (1.13.0)
     rubyzip (2.4.1)
     securerandom (0.4.1)
@@ -317,18 +319,18 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    standard (1.45.0)
+    standard (1.47.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
-      rubocop (~> 1.71.0)
+      rubocop (~> 1.73.0)
       standard-custom (~> 1.0.0)
-      standard-performance (~> 1.6)
+      standard-performance (~> 1.7)
     standard-custom (1.0.2)
       lint_roller (~> 1.0)
       rubocop (~> 1.50)
-    standard-performance (1.6.0)
+    standard-performance (1.7.0)
       lint_roller (~> 1.1)
-      rubocop-performance (~> 1.23.0)
+      rubocop-performance (~> 1.24.0)
     stringio (3.1.5)
     temple (0.10.3)
     terminal-table (4.0.0)

docs/CHANGELOG.md

@@ -10,6 +10,10 @@ nav_order: 5
 
 ## main
 
+* Improve handling of malformed component edge case when mocking components in tests.
+
+    *Martin Meyerhoff*, *Joel Hawksley*
+
 * Add Content Harmony & Learn To Be to list of companies using ViewComponent.
 
     *Kane Jamison*

lib/view_component/template.rb

@@ -63,8 +63,8 @@ def safe_method_name_call
       return safe_method_name unless inline_call?
 
       "maybe_escape_html(#{safe_method_name}) " \
-      "{ Kernel.warn('WARNING: The #{@component} component rendered HTML-unsafe output. " \
-      "The output will be automatically escaped, but you may want to investigate.') } "
+      "{ Kernel.warn(\"WARNING: The #{@component} component rendered HTML-unsafe output. " \
+      "The output will be automatically escaped, but you may want to investigate.\") } "
     end
 
     def requires_compiled_superclass?

test/sandbox/test/rendering_test.rb

@@ -17,7 +17,7 @@ def test_render_inline_allocations
 
     allocations = (Rails.version.to_f >= 8.0) ?
       {"3.5.0" => 115, "3.4.2" => 117, "3.3.7" => 129} :
-      {"3.3.7" => 120, "3.3.0" => 120, "3.2.7" => 118, "3.1.6" => 118, "3.0.7" => 127}
+      {"3.3.7" => 120, "3.3.0" => 132, "3.2.7" => 118, "3.1.6" => 118, "3.0.7" => 127}
 
     assert_allocations(**allocations) do
       render_inline(MyComponent.new)
@@ -1240,4 +1240,19 @@ def test_request_param
 
     assert_text("foo")
   end
+
+  # In https://github.com/ViewComponent/view_component/issues/2187,
+  # the Solidus test suite built mocked components by hand, resulting
+  # in a difficult-to-debug error. While this test case is quite narrow,
+  # it isolates the unintentional error masking we were doing.
+  def test_render_anonymous_component_without_template
+    location = caller(1, 1).first
+    mock_component = Class.new(MyComponent)
+    mock_component.define_singleton_method(:name) { "Foo" }
+    mock_component.define_singleton_method(:to_s) { "#{name} (#{location})" }
+
+    assert_nothing_raised do
+      render_inline(mock_component.new)
+    end
+  end
 end