Add a formatter for folly::StringPiece

test/CMakeLists.txt

@@ -86,6 +86,7 @@ endfunction()
 
 add_fmt_test(assert-test)
 add_fmt_test(gtest-extra-test)
+add_fmt_test(folly-test)
 add_fmt_test(format-test)
 add_fmt_test(format-impl-test)
 add_fmt_test(ostream-test)

test/folly-test.cc

@@ -0,0 +1,14 @@
+// Formatting library for C++ - folly::StringPiece formatter tests
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#include <fmt/folly.h>
+#include "gtest.h"
+
+TEST(FollyTest, FormatStringPiece) {
+  EXPECT_EQ(fmt::format("{}", "foo"), "foo");
+  EXPECT_EQ(fmt::format("{:>5}", "foo"), "  foo");
+}

test/folly/Range.h

@@ -0,0 +1,17 @@
+// A folly::StringPiece stub.
+
+#include <cstring>
+
+namespace folly {
+class StringPiece {
+ public:
+  explicit StringPiece(const char *s) : data_(s), size_(std::strlen(s)) {}
+
+  const char* data() const { return "foo"; }
+  size_t size() const { return 3; }
+
+ private:
+  const char *data_;
+  size_t size_;
+};
+}