googletest simple example

main.cpp

#include <gtest/gtest.h>

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv); 
    return RUN_ALL_TESTS();
}

Makefile

# Makefile for gtest examples

GOOGLE_TEST_LIB = gtest
GOOGLE_TEST_INCLUDE = /usr/local/include

G++ = g++
G++_FLAGS = -c -Wall -I $(GOOGLE_TEST_INCLUDE)
LD_FLAGS = -L /usr/local/lib -l $(GOOGLE_TEST_LIB) -l pthread

OBJECTS = main.o string-compare.o
TARGET = string-compare

all: $(TARGET)

$(TARGET): $(OBJECTS)
            g++ -o $(TARGET) $(OBJECTS) $(LD_FLAGS)

%.o : %.cpp
            $(G++) $(G++_FLAGS) $<

clean:
            rm -f $(TARGET) $(OBJECTS)
                    
.PHONY: all clean

string-compare.cpp

#include <gtest/gtest.h> // googletest header file

#include <string>
using std::string;

const char *actualValTrue  = "hello gtest";
const char *actualValFalse = "hello world";
const char *expectVal      = "hello gtest";

TEST(StrCompare, CStrEqual) {
    EXPECT_STREQ(expectVal, actualValTrue);
}

TEST(StrCompare, CStrNotEqual) {
    EXPECT_STREQ(expectVal, actualValFalse);
}