number_to_speech.cpp

#include <limits.h>
#include "gtest/gtest.h"
#include <string>

using namespace std;

string digit_to_speech (int number) {
    string result = "";
    if (number == 0)
        result = string( "zero " ) + result;
    else if (number == 1)
        result = string( "one " ) + result;
    else if (number == 2)
        result = string( "two " ) + result;
    else if (number == 3)
        result = string( "three " ) + result;
    else if (number == 4)
        result = string( "four " ) + result;
    return result;
}

const char *number_to_speech (int number) {
    string result = "";
    if (number < 10)
        result = digit_to_speech (number);
    else {
    int secondDigit = number / 10;
    result = digit_to_speech (secondDigit) +
        digit_to_speech( number - secondDigit * 10) ; } 
    return (result + string ("base-5")).c_str();
}
TEST (DummyTest, DummyCase) {
    EXPECT_STREQ ("zero base-5", number_to_speech (0));
    EXPECT_STREQ ("one base-5",  number_to_speech (1));
    EXPECT_STREQ ("two base-5",  number_to_speech (2));
    EXPECT_STREQ ("three base-5",  number_to_speech (3));
    EXPECT_STREQ ("four base-5",  number_to_speech (4));
    EXPECT_STREQ ("one zero base-5", number_to_speech(10) ); 
    EXPECT_STREQ ("one two base-5", number_to_speech(12));
    EXPECT_STREQ ("one three base-5", number_to_speech(13));
    EXPECT_STREQ ("one four base-5", number_to_speech(14));
    EXPECT_STREQ ("two zero base-5", number_to_speech(20));
    EXPECT_STREQ ("two one base-5", number_to_speech(21));
    EXPECT_STREQ ("three zero base-5", number_to_speech(30));
    EXPECT_STREQ ("four zero base-5", number_to_speech(40));
    EXPECT_STREQ ("four one base-5", number_to_speech(41));
    EXPECT_STREQ ("four one two base-5", number_to_speech(412));
    
}

int main (int argc, char *argv[])
{
    testing::InitGoogleTest (&argc, argv);
    int dummyVal = RUN_ALL_TESTS ();

    return 0;
}