fix(test): coerced value for generate column

Author: BuonOmo

test/excludes/PostgresqlVirtualColumnTest.rb

@@ -1,2 +1,14 @@
+require "support/copy_cat"
+
 exclude :test_build_fixture_sql, "Skipping because CockroachDB cannot write directly to computed columns."
 exclude :test_schema_dumping, "Replaced with local version"
+
+# From: "ASCII(name)"
+#   To: "ASCII(name)""::string"
+CopyCat.copy_methods(self, self, :test_change_table_without_stored_option) do
+  def on_str(node)
+    return unless node in [:str, "ASCII(name)"]
+
+    insert_after(node.loc.expression, '"::string"')
+  end
+end

test/support/copy_cat.rb

@@ -21,6 +21,9 @@ def warn(message, category: nil, **kwargs)
   # Copy methods from The original rails class to our adapter.
   # While copying, we can rewrite the source code of the method using
   # ast. Use `debug: true` to lead you through that process.
+  #
+  # Once debug is set, you can check the closest node you want to edit
+  # and then create a method `on_<node_type>` to handle it.
   def copy_methods(new_klass, old_klass, *methods, debug: false, &block)
     methods.each do |met|
       file, _ = old_klass.instance_method(met).source_location