From 77a47741b108a07901b2c151aa67b46d440bc743 Mon Sep 17 00:00:00 2001
From: Vinicius Stock <vinicius.stock@shopify.com>
Date: Thu, 13 Jun 2024 11:24:09 -0400
Subject: [PATCH] Handle fixtures with no associated model

---
 .../dsl/compilers/active_record_fixtures.rb   | 24 +++++++++----
 .../compilers/active_record_fixtures_spec.rb  | 34 +++++++++++++++++++
 2 files changed, 51 insertions(+), 7 deletions(-)

diff --git a/lib/tapioca/dsl/compilers/active_record_fixtures.rb b/lib/tapioca/dsl/compilers/active_record_fixtures.rb
index 5443d7ec6..b52bcd9a0 100644
--- a/lib/tapioca/dsl/compilers/active_record_fixtures.rb
+++ b/lib/tapioca/dsl/compilers/active_record_fixtures.rb
@@ -40,12 +40,6 @@ class ActiveRecordFixtures < Compiler
 
         sig { override.void }
         def decorate
-          method_names = if fixture_loader.respond_to?(:fixture_sets)
-            method_names_from_lazy_fixture_loader
-          else
-            method_names_from_eager_fixture_loader
-          end
-
           return if method_names.empty?
 
           root.create_path(constant) do |mod|
@@ -68,6 +62,18 @@ def gather_constants
 
         private
 
+        sig { returns(T::Array[T.any(String, Symbol)]) }
+        def method_names
+          @method_names ||= T.let(
+            if fixture_loader.respond_to?(:fixture_sets)
+              method_names_from_lazy_fixture_loader
+            else
+              method_names_from_eager_fixture_loader
+            end,
+            T.nilable(T::Array[T.any(String, Symbol)]),
+          )
+        end
+
         sig { returns(T::Class[ActiveRecord::TestFixtures]) }
         def fixture_loader
           @fixture_loader ||= T.let(
@@ -190,10 +196,14 @@ def fixture_class_mapping_from_fixture_files
                   next unless ::File.file?(file)
 
                   ActiveRecord::FixtureSet::File.open(file) do |fh|
+                    fixture_name = file.delete_prefix(path.to_s).delete_prefix("/").delete_suffix(".yml")
                     next unless fh.model_class
 
-                    fixture_name = file.delete_prefix(path.to_s).delete_prefix("/").delete_suffix(".yml")
                     mapping[fixture_name] = fh.model_class
+                  rescue ActiveRecord::Fixture::FormatError
+                    # For fixtures that are not associated to any models and just contain raw data or fixtures that
+                    # contain invalid formatting, we want to skip them and avoid crashing
+                    method_names.delete(T.must(fixture_name))
                   end
                 end
               end
diff --git a/spec/tapioca/dsl/compilers/active_record_fixtures_spec.rb b/spec/tapioca/dsl/compilers/active_record_fixtures_spec.rb
index 51246fb97..fb9cacbe0 100644
--- a/spec/tapioca/dsl/compilers/active_record_fixtures_spec.rb
+++ b/spec/tapioca/dsl/compilers/active_record_fixtures_spec.rb
@@ -55,6 +55,40 @@ class User
               assert_equal(expected, rbi_for("ActiveSupport::TestCase"))
             end
 
+            it "ignores fixtures that do not have an associated model" do
+              add_content_file("test/fixtures/serialized_data.yml", <<~YAML)
+                ---
+                field1: 123
+                name: Hello
+              YAML
+
+              add_content_file("test/fixtures/posts.yml", <<~YAML)
+                super_post:
+                  title: An incredible Ruby post
+                  author: Johnny Developer
+                  created_at: 2021-09-08 11:00:00
+                  updated_at: 2021-09-08 11:00:00
+              YAML
+
+              add_ruby_file("test_models.rb", <<~RUBY)
+                class Post < ActiveRecord::Base
+                end
+              RUBY
+
+              expected = <<~RBI
+                # typed: strong
+
+                class ActiveSupport::TestCase
+                  sig { params(fixture_name: NilClass, other_fixtures: NilClass).returns(T::Array[Post]) }
+                  sig { params(fixture_name: T.any(String, Symbol), other_fixtures: NilClass).returns(Post) }
+                  sig { params(fixture_name: T.any(String, Symbol), other_fixtures: T.any(String, Symbol)).returns(T::Array[Post]) }
+                  def posts(fixture_name = nil, *other_fixtures); end
+                end
+              RBI
+
+              assert_equal(expected, rbi_for("ActiveSupport::TestCase"))
+            end
+
             it "generates methods for fixtures" do
               add_content_file("test/fixtures/posts.yml", <<~YAML)
                 super_post: