Fix MakeFormattableView

commit_hash:0e4b24c65451e75f168b456cd0d271ddebb7219d

1 files changed, 13 insertions, 0 deletions

diff --git a/library/cpp/yt/string/unittests/format_ut.cpp b/library/cpp/yt/string/unittests/format_ut.cpp
index e2e23c737c2..a6c5ef6837f 100644
--- a/library/cpp/yt/string/unittests/format_ut.cpp
+++ b/library/cpp/yt/string/unittests/format_ut.cpp
@@ -267,6 +267,19 @@ TEST(TFormatTest, LazyMultiValueFormatter)
     EXPECT_EQ("int: 1, string: hello, range: [1, 2, 3]", Format("%v", lazyFormatter));
 }
 
+TEST(TFormatTest, ReusableLambdaFormatter)
+{
+    auto formatter = [&] (auto* builder, int value) {
+        builder->AppendFormat("%v", value);
+    };
+
+    std::vector<int> range1{1, 2, 3};
+    EXPECT_EQ("[1, 2, 3]", Format("%v", MakeFormattableView(range1, formatter)));
+
+    std::vector<int> range2{4, 5, 6};
+    EXPECT_EQ("[4, 5, 6]", Format("%v", MakeFormattableView(range2, formatter)));
+}
+
 TEST(TFormatTest, VectorArg)
 {
     std::vector<TString> params = {"a", "b", "c"};