Add WideString test for Issue open-source-parsers#756

Author: BillyDonahue

src/test_lib_json/main.cpp

@@ -14,6 +14,8 @@
 #include <cmath>
 #include <cstring>
 #include <iomanip>
+#include <iostream>
+#include <sstream>
 #include <json/config.h>
 #include <json/json.h>
 #include <limits>
@@ -1644,6 +1646,28 @@ JSONTEST_FIXTURE(ValueTest, StaticString) {
   }
 }
 
+JSONTEST_FIXTURE(ValueTest, WideString) {
+  // https://github.com/open-source-parsers/jsoncpp/issues/756
+  const std::string uni = u8"式，进";  // "\u5f0f\uff0c\u8fdb"
+  std::string styled;
+  {
+    Json::Value v;
+    v["abc"] = uni;
+    styled = v.toStyledString();
+  }
+  Json::Value root;
+  {
+    JSONCPP_STRING errs;
+    std::istringstream iss(styled);
+    bool ok = parseFromStream(Json::CharReaderBuilder(), iss, &root, &errs);
+    JSONTEST_ASSERT(ok);
+    if (!ok) {
+      std::cerr << "errs: " << errs << std::endl;
+    }
+  }
+  JSONTEST_ASSERT_STRING_EQUAL(root["abc"].asString(), uni);
+}
+
 JSONTEST_FIXTURE(ValueTest, CommentBefore) {
   Json::Value val; // fill val
   val.setComment(Json::String("// this comment should appear before"),
@@ -2556,6 +2580,7 @@ int main(int argc, const char* argv[]) {
   JSONTEST_REGISTER_FIXTURE(runner, ValueTest, offsetAccessors);
   JSONTEST_REGISTER_FIXTURE(runner, ValueTest, typeChecksThrowExceptions);
   JSONTEST_REGISTER_FIXTURE(runner, ValueTest, StaticString);
+  JSONTEST_REGISTER_FIXTURE(runner, ValueTest, WideString);
   JSONTEST_REGISTER_FIXTURE(runner, ValueTest, CommentBefore);
   // JSONTEST_REGISTER_FIXTURE(runner, ValueTest, nulls);
   JSONTEST_REGISTER_FIXTURE(runner, ValueTest, zeroes);