From c36b2f5ac08cea2ca6fc94681359baa2b3d1ce93 Mon Sep 17 00:00:00 2001
From: Jonathan Tatum <jdtatum@google.com>
Date: Fri, 8 May 2026 09:28:38 -0700
Subject: [PATCH] Add parser tests for escaped characters in triple-quoted
 strings.

PiperOrigin-RevId: 912562715
---
 parser/parser_test.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/parser/parser_test.cc b/parser/parser_test.cc
index 587b63a30..0ade80d0e 100644
--- a/parser/parser_test.cc
+++ b/parser/parser_test.cc
@@ -368,6 +368,11 @@ std::vector<TestInfo> test_cases = {
     {"(a)", "a^#1:Expr.Ident#"},
     {"((a))", "a^#1:Expr.Ident#"},
     {"a()", "a()^#1:Expr.Call#"},
+    {R"("""\?""")", R"("?"^#1:string#)"},
+    {R"('''\?''')", R"("?"^#1:string#)"},
+    // ExprPrinter passes through cescape so BACKSLASH is escaped.
+    {R"("""\\?""")", R"("\\?"^#1:string#)"},
+    {R"('''\\\?''')", R"("\\?"^#1:string#)"},
     {"a(b)",
      "a(\n"
      "  b^#2:Expr.Ident#\n"