googletest/include/gtest/gtest-test-part.h

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//
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// Author: mheule@google.com (Markus Heule)
//

#ifndef GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_
#define GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_

#include <iosfwd>
#include <gtest/internal/gtest-internal.h>
#include <gtest/internal/gtest-string.h>

namespace testing {

// The possible outcomes of a test part (i.e. an assertion or an
// explicit SUCCEED(), FAIL(), or ADD_FAILURE()).
enum TestPartResultType {
  TPRT_SUCCESS,           // Succeeded.
  TPRT_NONFATAL_FAILURE,  // Failed but the test can continue.
  TPRT_FATAL_FAILURE      // Failed and the test should be terminated.
};

// A copyable object representing the result of a test part (i.e. an
// assertion or an explicit FAIL(), ADD_FAILURE(), or SUCCESS()).
//
// Don't inherit from TestPartResult as its destructor is not virtual.
class TestPartResult {
 public:
  // C'tor.  TestPartResult does NOT have a default constructor.
  // Always use this constructor (with parameters) to create a
  // TestPartResult object.
  TestPartResult(TestPartResultType type,
                 const char* file_name,
                 int line_number,
                 const char* message)
      : type_(type),
        file_name_(file_name),
        line_number_(line_number),
        summary_(ExtractSummary(message)),
        message_(message) {
  }

  // Gets the outcome of the test part.
  TestPartResultType type() const { return type_; }

  // Gets the name of the source file where the test part took place, or
  // NULL if it's unknown.
  const char* file_name() const { return file_name_.c_str(); }

  // Gets the line in the source file where the test part took place,
  // or -1 if it's unknown.
  int line_number() const { return line_number_; }

  // Gets the summary of the failure message.
  const char* summary() const { return summary_.c_str(); }

  // Gets the message associated with the test part.
  const char* message() const { return message_.c_str(); }

  // Returns true iff the test part passed.
  bool passed() const { return type_ == TPRT_SUCCESS; }

  // Returns true iff the test part failed.
  bool failed() const { return type_ != TPRT_SUCCESS; }

  // Returns true iff the test part non-fatally failed.
  bool nonfatally_failed() const { return type_ == TPRT_NONFATAL_FAILURE; }

  // Returns true iff the test part fatally failed.
  bool fatally_failed() const { return type_ == TPRT_FATAL_FAILURE; }
 private:
  TestPartResultType type_;

  // Gets the summary of the failure message by omitting the stack
  // trace in it.
  static internal::String ExtractSummary(const char* message);

  // The name of the source file where the test part took place, or
  // NULL if the source file is unknown.
  internal::String file_name_;
  // The line in the source file where the test part took place, or -1
  // if the line number is unknown.
  int line_number_;
  internal::String summary_;  // The test failure summary.
  internal::String message_;  // The test failure message.
};

// Prints a TestPartResult object.
std::ostream& operator<<(std::ostream& os, const TestPartResult& result);

// An array of TestPartResult objects.
//
// We define this class as we cannot use STL containers when compiling
// Google Test with MSVC 7.1 and exceptions disabled.
//
// Don't inherit from TestPartResultArray as its destructor is not
// virtual.
class TestPartResultArray {
 public:
  TestPartResultArray();
  ~TestPartResultArray();

  // Appends the given TestPartResult to the array.
  void Append(const TestPartResult& result);

  // Returns the TestPartResult at the given index (0-based).
  const TestPartResult& GetTestPartResult(int index) const;

  // Returns the number of TestPartResult objects in the array.
  int size() const;
 private:
  // Internally we use a list to simulate the array.  Yes, this means
  // that random access is O(N) in time, but it's OK for its purpose.
  internal::List<TestPartResult>* const list_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(TestPartResultArray);
};

// This interface knows how to report a test part result.
class TestPartResultReporterInterface {
 public:
  virtual ~TestPartResultReporterInterface() {}

  virtual void ReportTestPartResult(const TestPartResult& result) = 0;
};

namespace internal {

// This helper class is used by {ASSERT|EXPECT}_NO_FATAL_FAILURE to check if a
// statement generates new fatal failures. To do so it registers itself as the
// current test part result reporter. Besides checking if fatal failures were
// reported, it only delegates the reporting to the former result reporter.
// The original result reporter is restored in the destructor.
// INTERNAL IMPLEMENTATION - DO NOT USE IN A USER PROGRAM.
class HasNewFatalFailureHelper : public TestPartResultReporterInterface {
 public:
  HasNewFatalFailureHelper();
  virtual ~HasNewFatalFailureHelper();
  virtual void ReportTestPartResult(const TestPartResult& result);
  bool has_new_fatal_failure() const { return has_new_fatal_failure_; }
 private:
  bool has_new_fatal_failure_;
  TestPartResultReporterInterface* original_reporter_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(HasNewFatalFailureHelper);
};

}  // namespace internal

}  // namespace testing

#endif  // GTEST_INCLUDE_GTEST_GTEST_TEST_PART_H_