diff --git a/include/boost/static_string/static_string.hpp b/include/boost/static_string/static_string.hpp
index 1776d6f..4de00bf 100644
--- a/include/boost/static_string/static_string.hpp
+++ b/include/boost/static_string/static_string.hpp
@@ -2412,8 +2412,7 @@ public:
   */
   BOOST_STATIC_STRING_CPP14_CONSTEXPR
   void
-  resize(
-    size_type n);
+  resize(size_type n);
 
   /** Change the size of the string.
 
@@ -5123,9 +5122,9 @@ void
 basic_static_string<N, CharT, Traits>::
 resize(size_type n)
 {
-  const auto curr_size = size();
   BOOST_STATIC_STRING_THROW_IF(
     n > max_size(), std::length_error{"n > max_size()"});
+  const auto curr_size = size();
   if(n > curr_size)
     traits_type::assign(&data()[curr_size], n - curr_size, value_type());
   this->set_size(n);
@@ -5138,9 +5137,9 @@ void
 basic_static_string<N, CharT, Traits>::
 resize(size_type n, value_type c)
 {
-  const auto curr_size = size();
   BOOST_STATIC_STRING_THROW_IF(
     n > max_size(), std::length_error{"n > max_size()"});
+  const auto curr_size = size();
   if(n > curr_size)
     traits_type::assign(&data()[curr_size], n - curr_size, c);
   this->set_size(n);
diff --git a/test/static_string.cpp b/test/static_string.cpp
index 597ab9d..eec2305 100644
--- a/test/static_string.cpp
+++ b/test/static_string.cpp
@@ -6903,7 +6903,8 @@ testStartsEnds()
   BOOST_TEST(S("1234567890").ends_with(string_view("1234567890")));
 }
 
-void testHash()
+void
+testHash()
 {
   using U = static_string<30>;
   std::hash<U> hasher;
@@ -6911,15 +6912,28 @@ void testHash()
   BOOST_TEST(hasher(U("1234567890")) == hasher(U("1234567890")));
 }
 
-void testEmpty()
+void
+testEmpty()
 {
-  using E = static_string<0>;
-  E a;
+  static_string<0> a;
   BOOST_TEST(a.size() == 0);
   BOOST_TEST(a.data());
   BOOST_TEST(!a.capacity());
 }
 
+void
+testResize()
+{
+  static_string<10> a = "a";
+  a.resize(a.size() + 1);
+  BOOST_TEST(a.size() == 2);
+
+  static_string<10> b = "a";
+  b.resize(b.size() + 1, 'a');
+  BOOST_TEST(b == "aa");
+  BOOST_TEST(b.size() == 2);
+}
+
 int
 runTests()
 {
@@ -6947,6 +6961,7 @@ runTests()
   testSwap();
   testGeneral();
   testToStaticString();
+  testResize();
 
   testFind();
 
@@ -6959,17 +6974,6 @@ runTests()
 
   return report_errors();
 }
-
-static_assert(std::is_base_of<
-    detail::static_string_base<0, char, std::char_traits<char>>,
-    static_string<0>>::value, 
-    "the zero size optimization shall be used for N = 0");
-
-static_assert(std::is_base_of<
-    detail::static_string_base<(std::numeric_limits<char>::max)() + 1, char, std::char_traits<char>>,
-    static_string<(std::numeric_limits<char>::max)() + 1>>::value,
-    "the minimum size type optimization shall be used for N > 0");
-
 } // static_string
 } // boost