initial commit

cplusplus/geminitutorial/tutorial1/test/test_calculator.cpp

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+#include <gtest/gtest.h>
+#include "../src/calculator.h" // Include the header for the class we are testing
+
+// Test fixture for Calculator class
+class CalculatorTest : public ::testing::Test {
+protected:
+    Calculator calc;
+};
+
+// Test case for the add method
+TEST_F(CalculatorTest, Add) {
+    EXPECT_EQ(calc.add(2, 2), 4);
+    EXPECT_EQ(calc.add(-1, 1), 0);
+    EXPECT_EQ(calc.add(-5, -5), -10);
+}
+
+// Another test case for the add method for good measure
+TEST_F(CalculatorTest, AddWithZero) {
+    EXPECT_EQ(calc.add(0, 5), 5);
+    EXPECT_EQ(calc.add(5, 0), 5);
+    EXPECT_EQ(calc.add(0, 0), 0);
+}