1 files changed, 65 insertions, 0 deletions
diff --git a/activerecord/test/cases/arel/crud_test.rb b/activerecord/test/cases/arel/crud_test.rb
new file mode 100644
index 0000000000..f3cdd8927f
--- /dev/null
+++ b/activerecord/test/cases/arel/crud_test.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+require_relative "helper"
+
+module Arel
+  class FakeCrudder < SelectManager
+    class FakeEngine
+      attr_reader :calls, :connection_pool, :spec, :config
+
+      def initialize
+        @calls = []
+        @connection_pool = self
+        @spec = self
+        @config = { adapter: "sqlite3" }
+      end
+
+      def connection; self end
+
+      def method_missing(name, *args)
+        @calls << [name, args]
+      end
+    end
+
+    include Crud
+
+    attr_reader :engine
+    attr_accessor :ctx
+
+    def initialize(engine = FakeEngine.new)
+      super
+    end
+  end
+
+  describe "crud" do
+    describe "insert" do
+      it "should call insert on the connection" do
+        table = Table.new :users
+        fc = FakeCrudder.new
+        fc.from table
+        im = fc.compile_insert [[table[:id], "foo"]]
+        assert_instance_of Arel::InsertManager, im
+      end
+    end
+
+    describe "update" do
+      it "should call update on the connection" do
+        table = Table.new :users
+        fc = FakeCrudder.new
+        fc.from table
+        stmt = fc.compile_update [[table[:id], "foo"]], Arel::Attributes::Attribute.new(table, "id")
+        assert_instance_of Arel::UpdateManager, stmt
+      end
+    end
+
+    describe "delete" do
+      it "should call delete on the connection" do
+        table = Table.new :users
+        fc = FakeCrudder.new
+        fc.from table
+        stmt = fc.compile_delete
+        assert_instance_of Arel::DeleteManager, stmt
+      end
+    end
+  end
+end