More iterator support & fmt::count

test/format-test.cc

@@ -1910,7 +1910,7 @@ TEST(FormatTest, ToString) {
   EXPECT_EQ("42", fmt::to_string(42));
 }
 
-TEST(WriterTest, OutputIterators) {
+TEST(FormatTest, OutputIterators) {
   std::list<char> out;
   fmt::format_to(std::back_inserter(out), "{}", 42);
   EXPECT_EQ("42", std::string(out.begin(), out.end()));
@@ -1918,3 +1918,7 @@ TEST(WriterTest, OutputIterators) {
   fmt::format_to(std::ostream_iterator<char>(s), "{}", 42);
   EXPECT_EQ("42", s.str());
 }
+
+TEST(FormatTest, OutputSize) {
+  EXPECT_EQ(2, fmt::count("{}", 42));
+}