[ruby/prism] Frozen strings in the AST

8d9d429155

test/prism/result/string_test.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require_relative "../test_helper"
+
+module Prism
+  class StringTest < TestCase
+    def test_regular_expression_node_unescaped_frozen
+      node = Prism.parse_statement("/foo/")
+      assert_predicate node.unescaped, :frozen?
+    end
+
+    def test_source_file_node_filepath_frozen
+      node = Prism.parse_statement("__FILE__")
+      assert_predicate node.filepath, :frozen?
+    end
+
+    def test_string_node_unescaped_frozen
+      node = Prism.parse_statement('"foo"')
+      assert_predicate node.unescaped, :frozen?
+    end
+
+    def test_symbol_node_unescaped_frozen
+      node = Prism.parse_statement(":foo")
+      assert_predicate node.unescaped, :frozen?
+    end
+
+    def test_xstring_node_unescaped_frozen
+      node = Prism.parse_statement("`foo`")
+      assert_predicate node.unescaped, :frozen?
+    end
+  end
+end