added test

.github/workflows/test.yml

@@ -0,0 +1,28 @@
+name: C++ CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install dependencies
+      run: |
+        sudo apt-get install g++
+        sudo apt-get install libgtest-dev
+        cd /usr/src/gtest
+        sudo cmake CMakeLists.txt
+        sudo make
+        sudo cp *.a /usr/lib
+    - name: Build and test
+      run: |
+        g++ -o visitor visitor.cpp -lgtest -lpthread
+        g++ -o test_visitor test_visitor.cpp visitor.cpp -lgtest -lpthread
+        ./test_visitor
+

test_visitor.cpp

@@ -0,0 +1,35 @@
+#include "gtest/gtest.h"
+
+// Тестирование ConcreteVisitor1
+class ConcreteVisitor1Test : public ::testing::Test {
+protected:
+    ConcreteVisitor1 visitor;
+    ConcreteElementA elementA;
+};
+
+TEST_F(ConcreteVisitor1Test, VisitElementA) {
+    testing::internal::CaptureStdout();
+    elementA.accept(visitor);
+    std::string output = testing::internal::GetCapturedStdout();
+    EXPECT_EQ(output, "Concrete Visitor 1: Element A visited.\n");
+}
+
+// Тестирование ConcreteElementA
+class ConcreteElementATest : public ::testing::Test {
+protected:
+    ConcreteElementA elementA;
+    ConcreteVisitor1 visitor;
+};
+
+TEST_F(ConcreteElementATest, AcceptVisitor) {
+    testing::internal::CaptureStdout();
+    elementA.accept(visitor);
+    std::string output = testing::internal::GetCapturedStdout();
+    EXPECT_EQ(output, "Concrete Visitor 1: Element A visited.\n");
+}
+
+int main(int argc, char **argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+