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-rw-r--r--activerecord/test/cases/associations/join_dependency_test.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/join_dependency_test.rb b/activerecord/test/cases/associations/join_dependency_test.rb
new file mode 100644
index 0000000000..08c166dc33
--- /dev/null
+++ b/activerecord/test/cases/associations/join_dependency_test.rb
@@ -0,0 +1,8 @@
+require "cases/helper"
+require 'models/edge'
+
+class JoinDependencyTest < ActiveRecord::TestCase
+ def test_column_names_with_alias_handles_nil_primary_key
+ assert_equal Edge.column_names, ActiveRecord::Associations::JoinDependency::JoinBase.new(Edge).column_names_with_alias.map(&:first)
+ end
+end \ No newline at end of file