vformat_to tests

seanmiddleditch · Jan 15, 2024 · 8ca10e7 · 8ca10e7
1 parent 7123b74
commit 8ca10e7
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/include/nanofmt/format.inl b/include/nanofmt/format.inl
@@ -313,7 +313,7 @@ namespace NANOFMT_NS {
     template <std::size_t N>
     char* vformat_to(char (&dest)[N], format_string format_str, format_args args) {
         const detail::vformat_result result =
-            detail::vformat(format_context{dest, dest + (N - 1 /*NUL*/)}, format_str, args).out();
+            detail::vformat(dest, dest + (N - 1 /*NUL*/), format_str, args);
         *result.pos = '\0';
         return result.pos;
     }

diff --git a/tests/test_format.cpp b/tests/test_format.cpp
@@ -84,6 +84,17 @@ TEST_CASE("nanofmt.format.append") {
     CHECK(std::strcmp(buffer, "Hello, Worl") == 0);
 }
 
+TEST_CASE("nanofmt.vformat.append") {
+    using namespace NANOFMT_NS;
+
+    char buffer[12] = {};
+    vformat_to(buffer, "{} + {}", make_format_args(1, 2));
+    char const* const end = vformat_append_to(buffer, " = {}", make_format_args(3));
+
+    CHECK((end - buffer) == 9);
+    CHECK(std::strcmp(buffer, "1 + 2 = 3") == 0);
+}
+
 TEST_CASE("nanofmt.format.integers") {
     using namespace NANOFMT_NS::test;