Set limit for number of failed EXPECTs per test in test launcher output.

base/test/gtest_xml_unittest_result_printer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_TEST_GTEST_XML_UNITTEST_RESULT_PRINTER_H_
 #define BASE_TEST_GTEST_XML_UNITTEST_RESULT_PRINTER_H_
 
 #include <stdio.h>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 class FilePath;
 
 // Generates an XML output file. Format is very close to GTest, but has
 // extensions needed by the test launcher.
 class XmlUnitTestResultPrinter : public testing::EmptyTestEventListener {
  public:
   XmlUnitTestResultPrinter();
   ~XmlUnitTestResultPrinter() override;
 
+  // Some tests may contain broken EXPECT with a large message inside a loop
+  // with several thousands iterations and produce huge output (several
+  // gigabytes). Limit number of serialized test result parts to prevent it.
+  // Zero value disables test part results.
+  // Negative value disables limit.
+  void set_test_part_results_limit(int limit) {

[Paweł Hajdan Jr., 2017/05/05 17:33:03]

Instead of a setter, can we make this class read corresponding command-line flag
directly?

[alex-ac, 2017/05/07 12:07:24]

Done.

+    test_part_results_limit_ = limit;
+  }
+  int test_part_results_limit() const { return test_part_results_limit_; }
+  bool has_test_part_results_limit() const {
+    return test_part_results_limit_ >= 0;
+  }
+
   // Must be called before adding as a listener. Returns true on success.
   bool Initialize(const FilePath& output_file_path) WARN_UNUSED_RESULT;
 
   // CHECK/DCHECK failed. Print file/line and message to the xml.
   void OnAssert(const char* file,
                 int line,
                 const std::string& summary,
                 const std::string& message);
 
  private:
   // testing::EmptyTestEventListener:
   void OnTestCaseStart(const testing::TestCase& test_case) override;
   void OnTestStart(const testing::TestInfo& test_info) override;
   void OnTestEnd(const testing::TestInfo& test_info) override;
   void OnTestCaseEnd(const testing::TestCase& test_case) override;
 
   void WriteTestPartResult(const char* file,
                            int line,
                            testing::TestPartResult::Type type,
                            const std::string& summary,
                            const std::string& message);
 
   FILE* output_file_;
+  int test_part_results_limit_;
 
   DISALLOW_COPY_AND_ASSIGN(XmlUnitTestResultPrinter);
 };
 
 }  // namespace base
 
 #endif  // BASE_TEST_GTEST_XML_UNITTEST_RESULT_PRINTER_H_