From c9a411397e0e48fc8321f958dafb9666bc6eef6a Mon Sep 17 00:00:00 2001
From: Aviral Goel <agoel@roblox.com>
Date: Fri, 7 Feb 2025 16:03:50 -0800
Subject: [PATCH] Explicitly enable FFlags in interpolated string Transpiler
 tests

This test fails due to a bad interaction when `FFlagLuauStoreCSTData` is
enabled, whilst `FFlagLexerFixInterpStringStart` is disabled.
The OSS test suite, when run with `--fflags=true`, enables all
flags starting with a `Luau` prefix, but does not enable any other flag.

To resolve this, we explicitly enable both fflags for the failing
interpolated string test cases. As a consequence, we technically lose
the check that these tests pass when all flags are disabled.
---
 tests/Transpiler.test.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/Transpiler.test.cpp b/tests/Transpiler.test.cpp
index ebbfd4dc..3505f96d 100644
--- a/tests/Transpiler.test.cpp
+++ b/tests/Transpiler.test.cpp
@@ -1408,6 +1408,10 @@ TEST_CASE_FIXTURE(Fixture, "transpile_for_in_multiple_types")
 
 TEST_CASE_FIXTURE(Fixture, "transpile_string_interp")
 {
+    ScopedFastFlag fflags[] = {
+        {FFlag::LuauStoreCSTData, true},
+        {FFlag::LexerFixInterpStringStart, true},
+    };
     std::string code = R"( local _ = `hello {name}` )";
 
     CHECK_EQ(code, transpile(code, {}, true).code);
@@ -1452,6 +1456,10 @@ TEST_CASE_FIXTURE(Fixture, "transpile_string_interp_multiline_escape")
 
 TEST_CASE_FIXTURE(Fixture, "transpile_string_literal_escape")
 {
+    ScopedFastFlag fflags[] = {
+        {FFlag::LuauStoreCSTData, true},
+        {FFlag::LexerFixInterpStringStart, true},
+    };
     std::string code = R"( local _ = ` bracket = \{, backtick = \` = {'ok'} ` )";
 
     CHECK_EQ(code, transpile(code, {}, true).code);