Lab2 added (#417)

modules/nikitin_k_lab2/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.28.1)
+# Declare variables for binaries' names
+get_filename_component(DIR_NAME ${CMAKE_CURRENT_LIST_DIR} NAME)
+set(MODULE      "${DIR_NAME}")
+set(LIBRARY     "lib_${MODULE}")
+set(TESTS       "test_${MODULE}")
+
+# Include directory with public headers
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+
+# Add all submodules
+add_subdirectory(src)
+add_subdirectory(test)

modules/nikitin_k_lab2/include/Triangle.h

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+// Copyright 2024 Nikitin Kirill
+#ifndef TRIANGLE_H
+#define TRIANGLE_H
+
+#include <cmath>
+
+class Triangle {
+ public:
+  Triangle(double x1, double y1, double x2, double y2, double x3, double y3);
+
+  double sideLength(double x1, double y1, double x2, double y2) const;
+  double perimeter() const;
+  double area() const;
+
+ private:
+  double x1, y1, x2, y2, x3, y3;
+};
+
+#endif  // TRIANGLE_H
+#pragma once

modules/nikitin_k_lab2/src/CMakeLists.txt

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+set(target ${LIBRARY})
+
+file(GLOB srcs "*.cpp")
+file(GLOB hdrs "../include/*.h")
+set_source_files_properties(${srcs} ${hdrs} PROPERTIES
+    LABELS "${MODULE};Library")
+
+add_library(${target} STATIC ${srcs} ${hdrs})
+set_target_properties(${target} PROPERTIES
+    OUTPUT_NAME ${MODULE}
+    LABELS "${MODULE};Library")
+
+if (UNIX)
+  target_link_libraries(${target} ${CMAKE_THREAD_LIBS_INIT})
+endif (UNIX)
+target_link_libraries(${target} ${LIBRARY_DEPS})
+
+set(LIBRARY_DEPS "${LIBRARY_DEPS};${target}" PARENT_SCOPE)

modules/nikitin_k_lab2/src/Triangle.cpp

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+// Copyright 2024 Nikitin Kirill
+#include "include/Triangle.h"
+
+#include <iostream>
+
+Triangle::Triangle(double x1, double y1, double x2, double y2, double x3,
+                   double y3)
+    : x1(x1), y1(y1), x2(x2), y2(y2), x3(x3), y3(y3) {}
+
+double Triangle::sideLength(double x1, double y1, double x2, double y2) const {
+  return std::sqrt(std::pow(x2 - x1, 2) + std::pow(y2 - y1, 2));
+}
+
+double Triangle::perimeter() const {
+  double a = sideLength(x1, y1, x2, y2);
+  double b = sideLength(x2, y2, x3, y3);
+  double c = sideLength(x3, y3, x1, y1);
+  return a + b + c;
+}
+
+double Triangle::area() const {
+  double a = sideLength(x1, y1, x2, y2);
+  double b = sideLength(x2, y2, x3, y3);
+  double c = sideLength(x3, y3, x1, y1);
+  double s = (a + b + c) / 2;
+  return std::sqrt(s * (s - a) * (s - b) * (s - c));
+}

modules/nikitin_k_lab2/test/CMakeLists.txt

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+set(target ${TESTS})
+
+file(GLOB srcs "*.cpp")
+set_source_files_properties(${srcs} PROPERTIES
+    LABELS "${MODULE};Test")
+
+add_executable(${target} ${srcs} ${hdrs})
+set_target_properties(${target} PROPERTIES
+    LABELS "${MODULE};Test")
+
+if (UNIX)
+  target_link_libraries(${target} gtest ${CMAKE_THREAD_LIBS_INIT} pthread)
+endif (UNIX)
+target_link_libraries(${target} gtest ${LIBRARY})
+
+# VS2012 doesn't support correctly the tuples yet,
+# see http://code.google.com/p/googletest/issues/detail?id=412
+if(MSVC)
+    target_compile_definitions(${target} PUBLIC _VARIADIC_MAX=10)
+endif()
+
+add_test(
+    NAME ${MODULE}_gtest
+    COMMAND ${target}
+)
+set_tests_properties (${MODULE}_gtest PROPERTIES
+    LABELS "${MODULE}")

modules/nikitin_k_lab2/test/tests.cpp

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+// Copyright 2024 Nikitin Kirill
+#include <gtest/gtest.h>
+
+#include "include/Triangle.h"
+
+TEST(TriangleTest, SideLengthCalculation) {
+  Triangle triangle(0, 0, 3, 4, 0, 0);
+  EXPECT_DOUBLE_EQ(triangle.sideLength(0, 0, 3, 4), 5);
+  EXPECT_DOUBLE_EQ(triangle.sideLength(3, 4, 6, 8), 5);
+}
+
+TEST(TriangleTest, PerimeterCalculation) {
+  Triangle triangle(0, 0, 3, 4, 6, 0);
+  EXPECT_NEAR(triangle.perimeter(), 16.0, 0.0001);
+}
+
+TEST(TriangleTest, AreaCalculation) {
+  Triangle triangle1(0, 0, 3, 0, 3, 4);
+  Triangle triangle2(0, 0, 3, 4, 6, 0);
+  EXPECT_NEAR(triangle1.area(), 6, 0.0001);
+  EXPECT_NEAR(triangle2.area(), 12, 0.0001);
+}
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}