From 9cdc3343ff2f88e44bbc2f43feb2c0f05b3e03ad Mon Sep 17 00:00:00 2001
From: dan sinclair <dsinclair@chromium.org>
Date: Thu, 23 Feb 2023 19:49:07 +0000
Subject: [PATCH] Add test setting the locale.

This CL adds a test which sets the locale to one which uses `1,00`
instead of `1.00`. This ensures the float emission will get the right
format.

Bug: tint:1686
Change-Id: Ib87235c7beac351b7dcbf37534df07135da377e5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/120881
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
---
 src/tint/writer/float_to_string_test.cc | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/tint/writer/float_to_string_test.cc b/src/tint/writer/float_to_string_test.cc
index 901334e4e7..643f070de0 100644
--- a/src/tint/writer/float_to_string_test.cc
+++ b/src/tint/writer/float_to_string_test.cc
@@ -17,6 +17,7 @@
 #include <math.h>
 #include <cstring>
 #include <limits>
+#include <locale>
 
 #include "gtest/gtest.h"
 #include "src/tint/utils/bitcast.h"
@@ -79,6 +80,16 @@ TEST(FloatToStringTest, Precision) {
     EXPECT_EQ(FloatToString(1e-20f), "9.99999968e-21");
 }
 
+#if !defined(__linux__)
+TEST(FloatToStringTest, Locale) {
+    std::locale::global(std::locale("sv_SE.UTF-8"));
+
+    EXPECT_EQ(FloatToString(1e-9f), "0.000000001");
+
+    std::locale::global(std::locale::classic());
+}
+#endif  // !defined(__linux__)
+
 ////////////////////////////////////////////////////////////////////////////////
 // FloatToBitPreservingString                                                 //
 ////////////////////////////////////////////////////////////////////////////////