- removed old test cases

test/JSON_unit.cc

@@ -149,6 +149,7 @@ TEST_CASE("array")
         CHECK_NOTHROW(j[21] = 5);
         CHECK_THROWS_AS(j.at(21) = 5, std::out_of_range);
         CHECK_THROWS_AS(nonarray += 2, std::runtime_error);
+        CHECK_THROWS_AS(nonarray.push_back(JSON(nullptr)), std::runtime_error);
 
         const JSON k = j;
         CHECK_NOTHROW(k[21]);
@@ -1026,6 +1027,12 @@ TEST_CASE("Parser")
         CHECK_THROWS_AS(JSON::parse("infinity"), std::invalid_argument);
     }
 
+    SECTION("parse from C++ string")
+    {
+        std::string s = "{ \"foo\": [1,2,true] }";
+        CHECK_NOTHROW(JSON::parse(s));
+    }
+
     SECTION("user-defined string literal operator")
     {
         auto j1 = "[1,2,3]"_json;