Add an ostream operator to Value (based on JSONWriter) so that assertions

base/values.cc

Index: base/values.cc
diff --git a/base/values.cc b/base/values.cc
index c9b5eef3da7052d8b05e086656bcc539026f91c4..346f039139096fce786c0e32ac8f46880eb031bb 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -5,8 +5,10 @@
 #include "base/values.h"
 
 #include <algorithm>
+#include <ostream>
 
 #include "base/float_util.h"
+#include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
@@ -1057,4 +1059,12 @@ bool ListValue::Equals(const Value* other) const {
 ValueSerializer::~ValueSerializer() {
 }
 
+std::ostream& operator<<(std::ostream& out, const Value& value) {
+  std::string json;
+  base::JSONWriter::WriteWithOptions(&value,

[willchan no longer on Chromium, 2012/09/12 01:20:13]

is the base:: here necessary? We're in the base namespace already...

[not at google - send to devlin, 2012/09/12 01:21:48]

Done.

+                                     JSONWriter::OPTIONS_PRETTY_PRINT,
+                                     &json);
+  return out << json;
+}
+
 }  // namespace base