Created proper test structure

tests/CMakeLists.txt

@@ -15,6 +15,11 @@ enable_testing()
 add_executable(
         ${PROJECT_NAME}_tests
         main_test.cpp
+        unit_tests.cpp
+        test_functions.cpp
+        test_functions.hpp
+        ProjectIntegrationTestSuite.cpp
+        ProjectIntegrationTestSuite.hpp
 )
 
 target_link_libraries(

tests/ProjectIntegrationTestSuite.cpp

@@ -0,0 +1,9 @@
+#include "ProjectIntegrationTestSuite.hpp"
+
+void ProjectIntegrationTestSuite::SetUp() {
+  std::filesystem::create_directories(dirname);
+}
+
+void ProjectIntegrationTestSuite::TearDown() {
+  std::filesystem::remove_all(dirname);
+}

tests/ProjectIntegrationTestSuite.hpp

@@ -0,0 +1,17 @@
+#ifndef TEMPORARYDIRECTORYTESTSUITE_HPP_
+#define TEMPORARYDIRECTORYTESTSUITE_HPP_
+
+#include <filesystem>
+#include <string>
+
+#include <gtest/gtest.h>
+
+struct ProjectIntegrationTestSuite : public testing::Test { // special test structure
+  const std::string dirname = "./gtest_tmp";
+
+  void SetUp() override; // method that is called at the beginning of every test
+
+  void TearDown() override; // method that is called at the end of every test
+};
+
+#endif //TEMPORARYDIRECTORYTESTSUITE_HPP_

tests/main_test.cpp

@@ -1,34 +1,10 @@
 #include <sstream>
-#include <filesystem>
 
-#include <gtest/gtest.h> // include your library here
+#include <gtest/gtest.h>
+#include "ProjectIntegrationTestSuite.hpp"
+#include "test_functions.hpp" // include your library here
 #include "lib/mylib/MyClass.h"
 
-struct TemporaryDirectoryTestSuite : public testing::Test { // special test structure
-  const std::string dirname = "./gtest_tmp";
-
-  void SetUp() override { // method that is called at the beginning of every test
-    std::filesystem::create_directories(dirname);
-  }
-
-  void TearDown() override { // method that is called at the end of every test
-    std::filesystem::remove_all(dirname);
-  }
-};
-
-std::vector<std::string> SplitString(const std::string& str) {
-  std::istringstream iss(str);
-
-  return {std::istream_iterator<std::string>(iss), std::istream_iterator<std::string>()};
-}
-
-TEST_F(TemporaryDirectoryTestSuite, InitTest) {
+TEST_F(ProjectIntegrationTestSuite, InitTest) {
   ASSERT_TRUE(std::filesystem::is_directory(dirname));
 }
-
-TEST(MyLibUnitTestSuite, BasicTest1) {
-  std::ostringstream out;
-  MyClass printer(out);
-  printer.Print("Hello, World!");
-  ASSERT_EQ(out.str(), "Hello, World!");
-}

tests/test_functions.cpp

@@ -0,0 +1,10 @@
+#include <iterator>
+#include <sstream>
+
+#include "test_functions.hpp"
+
+std::vector<std::string> SplitString(const std::string& str) {
+  std::istringstream iss(str);
+
+  return {std::istream_iterator<std::string>(iss), std::istream_iterator<std::string>()};
+}

tests/test_functions.hpp

@@ -0,0 +1,10 @@
+#ifndef TESTFUNCTIONS_HPP_
+#define TESTFUNCTIONS_HPP_
+
+#include <iostream>
+#include <vector>
+#include <string>
+
+std::vector<std::string> SplitString(const std::string& str);
+
+#endif //TESTFUNCTIONS_HPP_

tests/unit_tests.cpp

@@ -0,0 +1,15 @@
+#include <sstream>
+
+#include <gtest/gtest.h>
+#include "test_functions.hpp" // include your library here
+#include "lib/mylib/MyClass.h"
+
+TEST(MyLibUnitTestSuite, BasicTest1) {
+  std::ostringstream out;
+  MyClass printer(out);
+  printer.Print("Hello, World!");
+  std::vector<std::string> out_by_words = SplitString(out.str());
+  ASSERT_EQ(out_by_words.size(), 2);
+  ASSERT_EQ(out_by_words[0], "Hello,");
+  ASSERT_EQ(out_by_words[1], "World!");
+}