# HG changeset patch
# User kzhaldyb
# Date 1480096416 -10800
#      Fri Nov 25 20:53:36 2016 +0300
# Node ID e94db17cd9699e134cb41e5821f5c7839569c0af
# Parent  5186b4a73b5ced16464970328cc10497af0b84d8
8168341: Gtests on JSon produce an enormous amount of hardly understandable output to stdout
Reviewed-by: duke

diff --git a/test/native/utilities/test_json.cpp b/test/native/utilities/test_json.cpp
--- a/test/native/utilities/test_json.cpp
+++ b/test/native/utilities/test_json.cpp
@@ -19,7 +19,6 @@
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
- *
  */
 
 #include "precompiled.hpp"
@@ -30,9 +29,11 @@
 class JSON_GTest : public JSON {
 public:
     static void test(const char* json, bool valid);
+    char* get_output();
 
 private:
     JSON_GTest(const char* text);
+    stringStream output;
 
     void log(uint level, const char* format, ...) ATTRIBUTE_PRINTF(3, 4);
 
@@ -40,16 +41,22 @@
     JSON_TYPE prev;
 };
 
+char* JSON_GTest::get_output() {
+  return output.as_string();
+}
+
 void JSON_GTest::test(const char* text, bool should_pass) {
     JSON_GTest json(text);
     if (should_pass) {
-        ASSERT_TRUE(json.valid()) << "failed on a valid json string";
+        ASSERT_TRUE(json.valid()) << "failed on a valid json string"
+                << std::endl << "debug output:" << std::endl << json.get_output();
     } else {
-        ASSERT_FALSE(json.valid()) << "succeeded on an invalid json string";
+        ASSERT_FALSE(json.valid()) << "succeeded on an invalid json string"
+                << std::endl << "debug output:" << std::endl << json.get_output();
     }
 }
 
-JSON_GTest::JSON_GTest(const char* text) : JSON(text, false, tty) {
+JSON_GTest::JSON_GTest(const char* text) : JSON(text, false, &output) {
     prev = JSON_NONE;
     parse();
 }