diff --git a/src/lint/linter/__tests__/rubocop/convention.lint-test b/src/lint/linter/__tests__/rubocop/convention.lint-test
--- a/src/lint/linter/__tests__/rubocop/convention.lint-test
+++ b/src/lint/linter/__tests__/rubocop/convention.lint-test
@@ -1,4 +1,6 @@
 def hello()
 end
 ~~~~~~~~~~
-warning:1:10:-
+warning:1:1
+warning:1:1
+warning:1:10
diff --git a/src/lint/linter/__tests__/rubocop/no_errors.lint-test b/src/lint/linter/__tests__/rubocop/no_errors.lint-test
--- a/src/lint/linter/__tests__/rubocop/no_errors.lint-test
+++ b/src/lint/linter/__tests__/rubocop/no_errors.lint-test
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 def hello
   puts 'hello world'
 end
diff --git a/src/lint/linter/__tests__/rubocop/warning.lint-test b/src/lint/linter/__tests__/rubocop/warning.lint-test
--- a/src/lint/linter/__tests__/rubocop/warning.lint-test
+++ b/src/lint/linter/__tests__/rubocop/warning.lint-test
@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 def hello(unused)
   puts 'hi'
 end
 ~~~~~~~~~
-warning:1:11
+warning:3:11