Krestol 08 timer

tdd_intro/cleanroom/chatclient/chatclient.pro

@@ -6,9 +6,13 @@ CONFIG -= app_bundle
 CONFIG -= qt
 
 SOURCES += \
-    test.cpp
+    test.cpp \
+    socketwrapper.cpp
 
 LIBS += \
     Ws2_32.lib \
     Mswsock.lib \
     AdvApi32.lib
+
+HEADERS += \
+    socketwrapper.h

tdd_intro/cleanroom/chatclient/socketwrapper.cpp

@@ -0,0 +1,98 @@
+#define WIN32_LEAN_AND_MEAN
+#define _WINSOCK_DEPRECATED_NO_WARNINGS
+
+#include <windows.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <exception>
+#include <vector>
+#include <string>
+#include <sstream>
+
+#include "SocketWrapper.h"
+
+namespace
+{
+    std::string GetExceptionString(const std::string& message, int errorCode)
+    {
+        std::stringstream stream;
+        stream << message;
+        stream << errorCode;
+        stream << std::endl;
+        return stream.str();
+    }
+}
+
+SocketWrapper::SocketWrapper()
+    : m_socket(INVALID_SOCKET)
+{
+    m_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+    if (m_socket == INVALID_SOCKET)
+    {
+        throw std::runtime_error(GetExceptionString("Failed to create socket to listen on.", WSAGetLastError()));
+    }
+}
+
+SocketWrapper::SocketWrapper(SOCKET & other)
+    : m_socket(other)
+{
+}
+
+SocketWrapper::~SocketWrapper()
+{
+    closesocket(m_socket);
+}
+
+void SocketWrapper::Bind(const std::string& addr, int16_t port)
+{
+    sockaddr_in addres;
+    addres.sin_family = AF_INET;
+    addres.sin_addr.s_addr = inet_addr(addr.data());
+    addres.sin_port = htons(port);
+    if (bind(m_socket, reinterpret_cast<sockaddr*>(&addres), sizeof(addres)) == SOCKET_ERROR)
+    {
+        throw std::runtime_error(GetExceptionString("Failed to bind socket to address.", WSAGetLastError()));
+    }
+}
+
+void SocketWrapper::Listen()
+{
+    if (listen(m_socket, SOMAXCONN) == SOCKET_ERROR)
+    {
+        throw std::runtime_error(GetExceptionString("Failed to listen on socket.", WSAGetLastError()));
+    }
+}
+
+SocketWrapper SocketWrapper::Accept()
+{
+    SOCKET other = accept(m_socket, nullptr, nullptr);
+    if (other == INVALID_SOCKET)
+    {
+        throw std::runtime_error(GetExceptionString("Failed to connect to client.", WSAGetLastError()));
+    }
+    return SocketWrapper(other);
+}
+
+ISocketWrapper::SockPtr SocketWrapper::Connect(const std::string& addr, int16_t port)
+{
+    sockaddr_in addres;
+    addres.sin_family = AF_INET;
+    addres.sin_addr.s_addr = inet_addr(addr.data());
+    addres.sin_port = htons(port);
+    SOCKET other = connect(m_socket, reinterpret_cast<sockaddr*>(&addres), sizeof(addres));
+    if (other == INVALID_SOCKET)
+    {
+        throw std::runtime_error(GetExceptionString("Failed to connect to server.", WSAGetLastError()));
+    }
+    return std::make_shared<SocketWrapper>(other);
+}
+
+void SocketWrapper::Read(std::vector<char>& buffer)
+{
+    recv(m_socket, buffer.data(), buffer.size(), 0);
+}
+
+void SocketWrapper::Write(const std::vector<char>& buffer)
+{
+    send(m_socket, buffer.data(), buffer.size(), 0);
+}

tdd_intro/cleanroom/chatclient/socketwrapper.h

@@ -0,0 +1,20 @@
+#pragma once
+#include "ISocketWrapper.h"
+
+class SocketWrapper : public ISocketWrapper
+{
+public:
+    SocketWrapper();
+    explicit SocketWrapper(SOCKET& other);
+    ~SocketWrapper();
+
+    void Bind(const std::string& addr, int16_t port);
+    void Listen();
+    SocketWrapper Accept();
+    virtual SockPtr Connect(const std::string& addr, int16_t port) override;
+    void Read(std::vector<char>& buffer);
+    void Write(const std::vector<char>& buffer);
+
+private:
+    SOCKET m_socket;
+};

tdd_intro/homework/05_bank_ocr/test.cpp

@@ -0,0 +1,187 @@
+/*### Bank OCR
+
+Your manager has recently purchased a machine that assists in reading letters and faxes sent in by branch offices. The machine scans the paper documents, and produces a file with a number of entries. You will write a program to parse this file.
+
+#### Specification
+#### User Story 1
+
+The following format is created by the machine:
+```
+    _  _     _  _  _  _  _
+  | _| _||_||_ |_   ||_||_|
+  ||_  _|  | _||_|  ||_| _|
+```
+Each entry is 3 lines long, and each line has 27 characters. 3 lines of each entry contain an account number written using pipes and underscores.
+
+Each account number should have 9 digits, all of which should be in the range 0-9. A normal file contains around 500 entries.
+
+Write a program that can take this file and parse it into actual account numbers.
+
+Example input and output
+```
+ _  _  _  _  _  _  _  _  _
+| || || || || || || || || |
+|_||_||_||_||_||_||_||_||_|
+
+=> 000000000
+
+  |  |  |  |  |  |  |  |  |
+  |  |  |  |  |  |  |  |  |
+
+=> 111111111
+
+ _  _  _  _  _  _  _  _  _
+ _| _| _| _| _| _| _| _| _|
+|_ |_ |_ |_ |_ |_ |_ |_ |_
+
+=> 222222222
+
+ _  _  _  _  _  _  _  _  _
+ _| _| _| _| _| _| _| _| _|
+ _| _| _| _| _| _| _| _| _|
+
+=> 333333333
+
+|_||_||_||_||_||_||_||_||_|
+  |  |  |  |  |  |  |  |  |
+
+=> 444444444
+
+ _  _  _  _  _  _  _  _  _
+|_ |_ |_ |_ |_ |_ |_ |_ |_
+ _| _| _| _| _| _| _| _| _|
+
+=> 555555555
+
+ _  _  _  _  _  _  _  _  _
+|_ |_ |_ |_ |_ |_ |_ |_ |_
+|_||_||_||_||_||_||_||_||_|
+
+=> 666666666
+
+ _  _  _  _  _  _  _  _  _
+  |  |  |  |  |  |  |  |  |
+  |  |  |  |  |  |  |  |  |
+
+=> 777777777
+
+ _  _  _  _  _  _  _  _  _
+|_||_||_||_||_||_||_||_||_|
+|_||_||_||_||_||_||_||_||_|
+
+=> 888888888
+
+ _  _  _  _  _  _  _  _  _
+|_||_||_||_||_||_||_||_||_|
+ _| _| _| _| _| _| _| _| _|
+
+=> 999999999
+
+    _  _     _  _  _  _  _
+  | _| _||_||_ |_   ||_||_|
+  ||_  _|  | _||_|  ||_| _|
+
+=> 123456789
+```
+*/
+#include <gtest/gtest.h>
+
+// check matrix for one digit 3x3
+// parse one digit
+   // - parse 1
+   // - parse 2
+   // - parse 0-9
+   // - check invalid one digit
+// parse several digits (27x3)
+// parse 27x3 (9 digits)
+   // - check matrix 27x3
+   // - parse
+// parse several lines
+
+using Digit = std::vector<std::string>;
+
+const Digit s_1({"   ",
+                 "  |",
+                 "  |"});
+
+const Digit s_2({" _ ",
+                 " _|",
+                 "|_ "});
+
+std::vector<Digit> s_digits({
+
+});
+
+bool CheckMatrixDimension(const Digit& digit)
+{
+    const size_t prefferedSize = 3;
+
+    if (digit.size() != prefferedSize)
+    {
+        return false;
+    }
+
+    for (const std::string& line : digit)
+    {
+        if (line.size() != prefferedSize)
+        {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+std::string ParseDigit(const Digit& digit)
+{
+    if (digit == Digit({"   ",
+                        "  |",
+                        "  |"}))
+    {
+        return "1";
+    }
+    else if (digit == Digit({" _ ",
+                             " _|",
+                             "|_ "}))
+    {
+        return "2";
+    }
+
+    return "8";
+}
+
+TEST(BankOCRTests, Check_Matrix_dimension_true)
+{
+    Digit digit = {"   ", "   ", "   "};
+    EXPECT_TRUE(CheckMatrixDimension(digit));
+}
+
+TEST(BankOCRTests, Check_Matrix_dimension_false)
+{
+    Digit digit = {"  ", "!   ", " "};
+    EXPECT_FALSE(CheckMatrixDimension(digit));
+}
+
+TEST(BankOCRTests, ParseDigit_1)
+{
+    Digit digit = {"   ",
+                   "  |",
+                   "  |"};
+    EXPECT_EQ("1", ParseDigit(digit));
+}
+
+TEST(BankOCRTests, ParseDigit_2)
+{
+    Digit digit = {" _ ",
+                   " _|",
+                   "|_ "};
+    EXPECT_EQ("2", ParseDigit(digit));
+}
+
+TEST(BankOCRTests, ParseDigit_8)
+{
+    Digit digit = {" _ ",
+                   "|_|",
+                   "|_|"};
+    EXPECT_EQ("8", ParseDigit(digit));
+}

tdd_intro/homework/06_allergies/test.cpp

@@ -0,0 +1,25 @@
+/*
+Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.
+An allergy test produces a single numeric score which contains the information about all the allergies the person has (that they were tested for).
+The list of items (and their value) that were tested are:
+    eggs (1)
+    peanuts (2)
+    shellfish (4)
+    strawberries (8)
+    tomatoes (16)
+    chocolate (32)
+    pollen (64)
+    cats (128)
+So if Tom is allergic to peanuts and chocolate, he gets a score of 34.
+
+Now, given just that score of 34, your program should be able:
+    To say have Tom allergic to specific product or not.
+    To give list of all allergens Tom is allergic to.
+
+E.g. it can be class with methods IsAllergicTo(string), List() and receiving allergyScore in constructor
+
+Note: a given score may include allergens not listed above (i.e. allergens that score 256, 512, 1024, etc.).
+Your program should ignore those components of the score.
+For example, if the allergy score is 257, your program should only report the eggs (1) allergy.
+*/
+#include <gtest/gtest.h>