1 files changed, 87 insertions, 0 deletions
diff --git a/activerecord/test/cases/insert_all_test.rb b/activerecord/test/cases/insert_all_test.rb
index fc25701c80..f24c63031c 100644
--- a/activerecord/test/cases/insert_all_test.rb
+++ b/activerecord/test/cases/insert_all_test.rb
@@ -104,6 +104,44 @@ class InsertAllTest < ActiveRecord::TestCase
     end
   end
 
+  def test_insert_all_with_skip_duplicates_and_autonumber_id_not_given
+    skip unless supports_insert_on_duplicate_skip?
+
+    assert_difference "Book.count", 1 do
+      # These two books are duplicates according to an index on %i[author_id name]
+      # but their IDs are not specified so they will be assigned different IDs
+      # by autonumber. We will get an exception from MySQL if we attempt to skip
+      # one of these records by assigning its ID.
+      Book.insert_all [
+        { author_id: 8, name: "Refactoring" },
+        { author_id: 8, name: "Refactoring" }
+      ]
+    end
+  end
+
+  def test_insert_all_with_skip_duplicates_and_autonumber_id_given
+    skip unless supports_insert_on_duplicate_skip?
+
+    assert_difference "Book.count", 1 do
+      Book.insert_all [
+        { id: 200, author_id: 8, name: "Refactoring" },
+        { id: 201, author_id: 8, name: "Refactoring" }
+      ]
+    end
+  end
+
+  def test_skip_duplicates_strategy_does_not_secretly_upsert
+    skip unless supports_insert_on_duplicate_skip?
+
+    book = Book.create!(author_id: 8, name: "Refactoring", format: "EXPECTED")
+
+    assert_no_difference "Book.count" do
+      Book.insert(author_id: 8, name: "Refactoring", format: "UNEXPECTED")
+    end
+
+    assert_equal "EXPECTED", book.reload.format
+  end
+
   def test_insert_all_will_raise_if_duplicates_are_skipped_only_for_a_certain_conflict_target
     skip unless supports_insert_on_duplicate_skip? && supports_insert_conflict_target?
 
@@ -143,6 +181,42 @@ class InsertAllTest < ActiveRecord::TestCase
     end
   end
 
+  def test_insert_logs_message_including_model_name
+    skip unless supports_insert_conflict_target?
+
+    capture_log_output do |output|
+      Book.insert(name: "Rework", author_id: 1)
+      assert_match "Book Insert", output.string
+    end
+  end
+
+  def test_insert_all_logs_message_including_model_name
+    skip unless supports_insert_conflict_target?
+
+    capture_log_output do |output|
+      Book.insert_all [{ name: "Remote", author_id: 1 }, { name: "Renote", author_id: 1 }]
+      assert_match "Book Bulk Insert", output.string
+    end
+  end
+
+  def test_upsert_logs_message_including_model_name
+    skip unless supports_insert_on_duplicate_update?
+
+    capture_log_output do |output|
+      Book.upsert(name: "Remote", author_id: 1)
+      assert_match "Book Upsert", output.string
+    end
+  end
+
+  def test_upsert_all_logs_message_including_model_name
+    skip unless supports_insert_on_duplicate_update?
+
+    capture_log_output do |output|
+      Book.upsert_all [{ name: "Remote", author_id: 1 }, { name: "Renote", author_id: 1 }]
+      assert_match "Book Bulk Upsert", output.string
+    end
+  end
+
   def test_upsert_all_updates_existing_records
     skip unless supports_insert_on_duplicate_update?
 
@@ -186,4 +260,17 @@ class InsertAllTest < ActiveRecord::TestCase
       Book.insert_all! [{ unknown_attribute: "Test" }]
     end
   end
+
+  private
+
+    def capture_log_output
+      output = StringIO.new
+      old_logger, ActiveRecord::Base.logger = ActiveRecord::Base.logger, ActiveSupport::Logger.new(output)
+
+      begin
+        yield output
+      ensure
+        ActiveRecord::Base.logger = old_logger
+      end
+    end
 end