TDD用于微控制器。第1部分：
微控制器的首次TDD 飞行。第2部分：间谍如何摆脱微控制器的TDD 依赖关系
。第3部分：在铁上运行

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Test-driven development (TDD). TDD ? .

TDD

, TDD Test-last development (TLD). TDD , .

TDD

TDD :

• TDD , ;
• TDD : «» ;
• , ;
• TDD ;
• : - , ;
• .

. , , . . , Android Studio .

( – ) , , . , . . (Integrated Development Environment – IDE). :

embedded, TLD TDD?

TDD ?

.

embedded

:

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• , . . .

, IDE. – Hardware Abstraction Level (HAL). IDE . , . ( ).

, TDD :

1. ?
2. ?
3. ?

, TDD. . , , .

1. ( ) , , .
2. TDD, .
3. () STM32F103C8, , , TDD .

GitLab.

embedded- - , . . , . . UART-, – - . , :

• UART-;
• UART-;
• UART-.

STM32F103C8, STM32 , .

-. , -, . ( Programming manual).
- , .

IDE , , . «» C, ++, . -:

1. IDE – Visual Studio, , . IDE «» C.
2. CppUTest – , unit- C/C++.

Visual Studio

- Visual Studio, Visual C++ Tests « Windows». (, spies, mocks, stubs . .).

Tests

1. Properties -> C/C++ -> General -> Additional Include Directories :
   — $(CPP_U_TEST)\include
   — $(SolutionDir)..\Firmware\Project\Include ( )
   
   
2. Properties -> Linker -> Input :
   — $(CPP_U_TEST)\lib\cpputestd.lib
   — $(SolutionDir)Debug\ProductionCodeLib.lib
   
   $(CPP_U_TEST) – Windows, cpputest (. ).
   
   Tests.cpp :

#include "CppUTest/CommandLineTestRunner.h"
int main(int argc, char** argv)
{
    return RUN_ALL_TESTS(argc, argv);
}

ProductionCodeLib, – Visual C++. -, «», . . , STM32F103C8.

, «Run», , :

OK (0 tests, 0 ran, 0 checks, 0 ignored, 0 filtered out, 0 ms)

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TDD

«» C, . -, «» . Configurator, :

• UART-;
• / -;
• -.

, . ( ) , . 5 . - Configurator.

-

1. read , -.
2. write -.
3. erase .
4. help .
5. .

ASCII.

CppUTest

ConfiguratorTests.cpp Tests, TDD.

CppUTest .

CppUTest:

TEST_GROUP(TestGroupName)
{
    void setup()
    {
    }

    void teardown()
    {
    }
};

TEST(TestGroupName, TestName)
{
}

:

• TEST_GROUP – , setup() teardown(), ;
• setup() – , ;
• teardown() – , ;
• TEST – , , ;
• TestGroupName – , ;
• TestName – .

. , . , Configurator setup() , teardown() . , , . - , NULL. ShouldNotBeNull.

ShouldNotBeNull:

// ConfiguratorTests.cpp
TEST_GROUP(Configurator)
{
    Configurator * configurator = NULL;
    void setup()
    {
        configurator = Configurator_Create();
    }
    void teardown()
    {
        Configurator_Destroy(configurator);
    }
};

TEST(Configurator, ShouldNotBeNull)
{
    CHECK_TRUE(configurator);
}

, , Configurator_Create Configurator_Destroy. . ProductionCodeLib. Configurator.h Configurator.c, -. Configurator.h . Configurator.c , . . . , .

ShouldNotBeNull:

// Configurator.h
typedef struct ConfiguratorStruct Configurator;
Configurator * Configurator_Create(void);

void Configurator_Destroy(Configurator * self);

// Configurator.c
#include "Configurator.h"

typedef struct ConfiguratorStruct
{
    char command[32];
} ConfiguratorStruct;

Configurator * Configurator_Create(void)
{
    return NULL;
}

void Configurator_Destroy(Configurator * self)
{
}

TDD , , (. . Configurator_Create ). failed, . , test-fails.

:

d:\\exampletdd\\tests\\tests\\configuratortests.cpp(27): error: Failure in TEST(Configurator, ShouldNotBeNull)
CHECK_TRUE(configurator) failed
.
Errors (1 failures, 1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 2 ms)

test-passes . Configurator_Create , ShouldNotBeNull. , Configurator_Destroy.

Configurator_Create Configurator_Destroy :

Configurator * Configurator_Create(void)
{
    Configurator * self = (Configurator*)calloc(1, sizeof(ConfiguratorStruct));
    return self;
}

void Configurator_Destroy(Configurator * self)
{
    if (self == NULL)
    {
        return;
    }
    free(self);
    self = NULL;
}

:

.
OK (1 tests, 1 ran, 1 checks, 0 ignored, 0 filtered out, 0 ms)

, test-passes . , , , , . . , «» 32 #define ( enum const define).

(«» ) #define:

// Configurator.h

#define SERIAL_RECEIVE_BUFFER_SIZE 32

// Configurator.c
typedef struct ConfiguratorStruct
{
    char command[SERIAL_RECEIVE_BUFFER_SIZE];
} ConfiguratorStruct;

, :

1. , .
2. IDE .
3. , «Run» ( ), .

TDD -. «» , . …

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