Restore intentionally disrupted C++17 tests

test/src/unit-conversions.cpp

@@ -465,7 +465,6 @@ TEST_CASE("value conversion")
 #if defined(JSON_HAS_CPP_17)
         SECTION("std::string_view")
         {
-            static_assert(false);
             std::string_view s = j.get<std::string_view>();
             CHECK(json(s) == j);
         }
@@ -515,7 +514,6 @@ TEST_CASE("value conversion")
 #if defined(JSON_HAS_CPP_17)
         SECTION("exception in case of a non-string type using string_view")
         {
-            static_assert(false);
             CHECK_THROWS_AS(json(json::value_t::null).get<std::string_view>(), json::type_error&);
             CHECK_THROWS_AS(json(json::value_t::object).get<std::string_view>(), json::type_error&);
             CHECK_THROWS_AS(json(json::value_t::array).get<std::string_view>(), json::type_error&);
@@ -563,7 +561,6 @@ TEST_CASE("value conversion")
 #if defined(JSON_HAS_CPP_17)
         SECTION("std::string_view")
         {
-            static_assert(false);
             std::string s = "previous value";
             std::string_view sv = s;
             j.get_to(sv);
@@ -620,7 +617,6 @@ TEST_CASE("value conversion")
 #if defined(JSON_HAS_CPP_17)
         SECTION("std::string_view")
         {
-            static_assert(false);
             std::string_view s = j.get<std::string_view>();
             CHECK(json(s) == j);
         }

test/src/unit-items.cpp

@@ -886,7 +886,6 @@ TEST_CASE("items()")
 #ifdef JSON_HAS_CPP_17
         SECTION("structured bindings")
         {
-            static_assert(false);
             json j = { {"A", 1}, {"B", 2} };
 
             std::map<std::string, int> m;

test/src/unit-regression2.cpp

@@ -250,7 +250,6 @@ TEST_CASE("regression tests 2")
 #ifdef JSON_HAS_CPP_17
     SECTION("issue #1292 - Serializing std::variant causes stack overflow")
     {
-        static_assert(false);
         static_assert(
             !std::is_constructible<json, std::variant<int, float>>::value, "");
     }