kc3-lang/angle/tests/preprocessor_tests/number_test.cpp

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• Hash : 78a35198
  Author :
  Date : 2012-04-19T17:16:26
  

  Added a catch-rule for invalid numbers.
  
  Note that we do not need such a rule for identifiers because they will always be either terminated by a space, a punctuator, or an invalid character. Space and punctuator are both valid cases. The invalid character will be caught by another rule specifically for invalid characters. I will cover this case when I add tests for valid character set.
  Review URL: https://codereview.appspot.com/5978048
  
  git-svn-id: https://angleproject.googlecode.com/svn/trunk@1047 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• tests/preprocessor_tests/number_test.cpp

• //
  // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  #include "gtest/gtest.h"
  #include "Preprocessor.h"
  #include "Token.h"
  
  #if GTEST_HAS_PARAM_TEST
  
  class InvalidNumberTest : public testing::TestWithParam<const char*>
  {
  };
  
  TEST_P(InvalidNumberTest, InvalidNumberIdentified)
  {
      const char* str = GetParam();
  
      pp::Token token;
      pp::Preprocessor preprocessor;
      ASSERT_TRUE(preprocessor.init(1, &str, 0));
      EXPECT_EQ(pp::Token::INVALID_NUMBER, preprocessor.lex(&token));
      EXPECT_EQ(pp::Token::INVALID_NUMBER, token.type);
      EXPECT_STREQ(str, token.value.c_str());
  }
  
  INSTANTIATE_TEST_CASE_P(InvalidIntegers, InvalidNumberTest,
                          testing::Values("1a", "08", "0xG"));
  
  
  INSTANTIATE_TEST_CASE_P(InvalidFloats, InvalidNumberTest,
                          testing::Values("1eg", "0.a", "0.1.2", ".0a", ".0.1"));
  
  #endif  // GTEST_HAS_PARAM_TEST
  
  #if GTEST_HAS_COMBINE
  
  typedef std::tr1::tuple<const char*, char> IntegerParams;
  class IntegerTest : public testing::TestWithParam<IntegerParams>
  {
  };
  
  TEST_P(IntegerTest, IntegerIdentified)
  {
      std::string str(std::tr1::get<0>(GetParam()));  // prefix.
      str.push_back(std::tr1::get<1>(GetParam()));  // digit.
      const char* cstr = str.c_str();
  
      pp::Token token;
      pp::Preprocessor preprocessor;
      ASSERT_TRUE(preprocessor.init(1, &cstr, 0));
      EXPECT_EQ(pp::Token::CONST_INT, preprocessor.lex(&token));
      EXPECT_EQ(pp::Token::CONST_INT, token.type);
      EXPECT_STREQ(cstr, token.value.c_str());
  }
  
  INSTANTIATE_TEST_CASE_P(DecimalInteger,
                          IntegerTest,
                          testing::Combine(testing::Values(""),
                                           testing::Range('0', '9')));
  
  INSTANTIATE_TEST_CASE_P(OctalInteger,
                          IntegerTest,
                          testing::Combine(testing::Values("0"),
                                           testing::Range('0', '7')));
  
  INSTANTIATE_TEST_CASE_P(HexadecimalInteger_0_9,
                          IntegerTest,
                          testing::Combine(testing::Values("0x"),
                                           testing::Range('0', '9')));
  
  INSTANTIATE_TEST_CASE_P(HexadecimalInteger_a_f,
                          IntegerTest,
                          testing::Combine(testing::Values("0x"),
                                           testing::Range('a', 'f')));
  
  INSTANTIATE_TEST_CASE_P(HexadecimalInteger_A_F,
                          IntegerTest,
                          testing::Combine(testing::Values("0x"),
                                           testing::Range('A', 'F')));
  
  static void PreprocessAndVerifyFloat(const char* str)
  {
      pp::Token token;
      pp::Preprocessor preprocessor;
      ASSERT_TRUE(preprocessor.init(1, &str, 0));
      EXPECT_EQ(pp::Token::CONST_FLOAT, preprocessor.lex(&token));
      EXPECT_EQ(pp::Token::CONST_FLOAT, token.type);
      EXPECT_STREQ(str, token.value.c_str());
  }
  
  typedef std::tr1::tuple<char, char, const char*, char> FloatScientificParams;
  class FloatScientificTest : public testing::TestWithParam<FloatScientificParams>
  {
  };
  
  // This test covers floating point numbers of form [0-9][eE][+-]?[0-9].
  TEST_P(FloatScientificTest, FloatIdentified)
  {
      std::string str;
      str.push_back(std::tr1::get<0>(GetParam()));  // significand [0-9].
      str.push_back(std::tr1::get<1>(GetParam()));  // separator [eE].
      str.append(std::tr1::get<2>(GetParam()));  // sign [" " "+" "-"].
      str.push_back(std::tr1::get<3>(GetParam()));  // exponent [0-9].
  
      SCOPED_TRACE("FloatScientificTest");
      PreprocessAndVerifyFloat(str.c_str());
  }
  
  INSTANTIATE_TEST_CASE_P(FloatScientific,
                          FloatScientificTest,
                          testing::Combine(testing::Range('0', '9'),
                                           testing::Values('e', 'E'),
                                           testing::Values("", "+", "-"),
                                           testing::Range('0', '9')));
  
  typedef std::tr1::tuple<char, char> FloatFractionParams;
  class FloatFractionTest : public testing::TestWithParam<FloatFractionParams>
  {
  };
  
  // This test covers floating point numbers of form [0-9]"." and [0-9]?"."[0-9].
  TEST_P(FloatFractionTest, FloatIdentified)
  {
      std::string str;
  
      char significand = std::tr1::get<0>(GetParam());
      if (significand != '\0')
          str.push_back(significand);
  
      str.push_back('.');
  
      char fraction = std::tr1::get<1>(GetParam());
      if (fraction != '\0')
          str.push_back(fraction);
  
      SCOPED_TRACE("FloatFractionTest");
      PreprocessAndVerifyFloat(str.c_str());
  }
  
  INSTANTIATE_TEST_CASE_P(FloatFraction_X_X,
                          FloatFractionTest,
                          testing::Combine(testing::Range('0', '9'),
                                           testing::Range('0', '9')));
  
  INSTANTIATE_TEST_CASE_P(FloatFraction_0_X,
                          FloatFractionTest,
                          testing::Combine(testing::Values('\0'),
                                           testing::Range('0', '9')));
  
  INSTANTIATE_TEST_CASE_P(FloatFraction_X_0,
                          FloatFractionTest,
                          testing::Combine(testing::Range('0', '9'),
                                           testing::Values('\0')));
  
  #endif  // GTEST_HAS_COMBINE
  
  // In the tests above we have tested individual parts of a float separately.
  // This test has all parts of a float.
  
  TEST(FloatFractionScientificTest, FloatIdentified)
  {
      SCOPED_TRACE("FloatFractionScientificTest");
      PreprocessAndVerifyFloat("0.1e+2");
  }
  

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