CppUnitLite

CppUnit のオリジナル作者である Michael Feathers が作成した CppUnitLite を試してみる。著書「レガシーコード改善ガイド」によると CppUnit よりシンプルに使えることを目指しているとのこと。

1. Object Mentor Downloads にある CppUnitLite から CppUnitLite.zip をダウンロードする
2. ダウンロードしたファイルを展開すると StackMain.cpp, StackTest.cpp, Stack.h とCppUnitLite フォルダがある
3. Makefile を書く

   CC = g++
   STACK_SRC = \
    StackMain.cpp \
    StackTest.cpp
   
   CPPUNITLITE_SRC = \
    CppUnitLite/Test.cpp \
    CppUnitLite/TestResult.cpp \
    CppUnitLite/TestRegistry.cpp \
    CppUnitLite/Failure.cpp \
    CppUnitLite/SimpleString.cpp
   
   default: StackMain.exe
   
   StackMain.exe:
    $(CC) -o $@ $(STACK_SRC) $(CPPUNITLITE_SRC)
   

4. コンパイル & 実行

   > make
   g++ -o StackMain.exe StackMain.cpp StackTest.cpp CppUnitLite/Test.cpp CppUnitLite/TestResult.cpp CppUnitLite/TestRegistry.cpp CppUnitLite/Failure.cpp CppUnitLite/SimpleString.cpp
   
   > StackMain.exe
   There were no test failures
   

自分でクラスを作ってテストを書いてみる
Example 4. Counter.h

#ifndef __COUNTER_H__
#define __COUNTER_H__

class Counter {
 private:
 int count;

 public:
 Counter();
 ~Counter();
 int get() const;
 void increment();
 void clear();
};

#endif /* __COUNTER_H__ */

Example 5. Counter.cpp

#include "Counter.h"

// Constractor
Counter::Counter()
{
 count = 0;
}

// Destructor
Counter::~Counter()
{

}

// 値を取得
int Counter::get(void) const
{
 return count;
}

void Counter::increment(void)
{
 count++;
}

void Counter::clear(void)
{
 count = 0;
}

Example 6. CounterTest.cpp

#include "CppUnitLite\TestHarness.h"
#include "Counter.h"

#include <string>

SimpleString StringFrom(const std::string& value)
{
 return SimpleString(value.c_str());
}

TEST(Counter, creation)
{
 Counter c;

 LONGS_EQUAL(0, c.get()); // 初期値は 0
 c.increment();
 LONGS_EQUAL(1, c.get()); // +1 されている
 c.clear();
 LONGS_EQUAL(0, c.get()); // clear したら 0 になっている
 LONGS_EQUAL(-1, c.get()); // 失敗例
}

int main(void)
{
 TestResult tr;
 TestRegistry::runAllTests(tr);

 return 0;
}

Example 7. Makefile

CC = g++
CPPUNITLITE_SRC = \
 CppUnitLite/Test.cpp \
 CppUnitLite/TestResult.cpp \
 CppUnitLite/TestRegistry.cpp \
 CppUnitLite/Failure.cpp \
 CppUnitLite/SimpleString.cpp

COUNTER_SRC = \
 Counter.cpp \
 CounterTest.cpp

CounterTest.exe:
 $(CC) -o $@ $(COUNTER_SRC) $(CPPUNITLITE_SRC)

clean:
 rm -rf *.exe

コンパイル & 実行

> make CounterTest.exe
g++ -o CounterTest.exe Counter.cpp CounterTest.cpp CppUnitLite/Test.cpp CppUnitLite/TestResult.cpp CppUnitLite/TestRegistry.cpp CppUnitLite/Failure.cpp CppUnitLite/SimpleString.cpp

> CounterTest.exe
Failure: "expected -1 but was: 0" line 20 in CounterTest.cpp
There were 1 failures