Федорец Илья - Лабораторная работа №1 (#414)

* Added new tests for lab1

* initial

Author: ilya-fedorets

modules/complex-number/test/test_fedorets_ilya_complex_number.cpp

@@ -0,0 +1,172 @@
+// Copyright 2024 Fedorets Ilya
+
+#include <gtest/gtest.h>
+
+#include <limits>
+
+#include "include/complex_number.h"
+
+class Fedorets_Ilya_ComplexNumberTest : public ::testing::Test {
+ protected:
+  const double eps = std::numeric_limits<double>::epsilon();
+};
+
+// Test default constructor
+TEST_F(Fedorets_Ilya_ComplexNumberTest, DefaultConstructor) {
+  ComplexNumber z;
+  EXPECT_DOUBLE_EQ(z.getRe(), 0.0);
+  EXPECT_DOUBLE_EQ(z.getIm(), 0.0);
+}
+
+// Test parameterized constructor
+TEST_F(Fedorets_Ilya_ComplexNumberTest, ParameterizedConstructor) {
+  ComplexNumber z(3.14, 2.71);
+  EXPECT_DOUBLE_EQ(z.getRe(), 3.14);
+  EXPECT_DOUBLE_EQ(z.getIm(), 2.71);
+}
+
+// Test copy constructor
+TEST_F(Fedorets_Ilya_ComplexNumberTest, CopyConstructor) {
+  ComplexNumber original(1.23, 4.56);
+  ComplexNumber copy(original);
+  EXPECT_DOUBLE_EQ(copy.getRe(), 1.23);
+  EXPECT_DOUBLE_EQ(copy.getIm(), 4.56);
+}
+
+// Test assignment operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, AssignmentOperator) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2;
+  z2 = z1;
+  EXPECT_DOUBLE_EQ(z2.getRe(), 1.0);
+  EXPECT_DOUBLE_EQ(z2.getIm(), 2.0);
+}
+
+// Test getter and setter methods
+TEST_F(Fedorets_Ilya_ComplexNumberTest, GetterSetterMethods) {
+  ComplexNumber z;
+  z.setRe(5.0);
+  z.setIm(-3.0);
+  EXPECT_DOUBLE_EQ(z.getRe(), 5.0);
+  EXPECT_DOUBLE_EQ(z.getIm(), -3.0);
+}
+
+// Test addition operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, AdditionOperator) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2(3.0, 4.0);
+  ComplexNumber sum = z1 + z2;
+  EXPECT_DOUBLE_EQ(sum.getRe(), 4.0);
+  EXPECT_DOUBLE_EQ(sum.getIm(), 6.0);
+}
+
+// Test subtraction operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, SubtractionOperator) {
+  ComplexNumber z1(5.0, 7.0);
+  ComplexNumber z2(2.0, 3.0);
+  ComplexNumber diff = z1 - z2;
+  EXPECT_DOUBLE_EQ(diff.getRe(), 3.0);
+  EXPECT_DOUBLE_EQ(diff.getIm(), 4.0);
+}
+
+// Test multiplication operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, MultiplicationOperator) {
+  ComplexNumber z1(2.0, 3.0);
+  ComplexNumber z2(4.0, 5.0);
+  ComplexNumber mult = z1 * z2;
+  EXPECT_DOUBLE_EQ(mult.getRe(), -7.0);  // (2*4 - 3*5)
+  EXPECT_DOUBLE_EQ(mult.getIm(), 22.0);  // (2*5 + 3*4)
+}
+
+// Test division operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, DivisionOperator) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2(3.0, 4.0);
+  ComplexNumber div = z1 / z2;
+
+  // Expected values calculated manually
+  EXPECT_NEAR(div.getRe(), 0.44, eps);
+  EXPECT_NEAR(div.getIm(), 0.08, eps);
+}
+
+// Test division by zero
+TEST_F(Fedorets_Ilya_ComplexNumberTest, DivisionByZero) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2(0.0, 0.0);
+
+  EXPECT_THROW({ z1 / z2; }, std::string);
+}
+
+// Test equalsZero method
+// TEST_F(Fedorets_Ilya_ComplexNumberTest, EqualsZero) {
+//   ComplexNumber z1(0.0, 0.0);
+//   ComplexNumber z2(eps / 2.0, eps / 2.0);
+//   ComplexNumber z3(eps * 2.0, eps * 2.0);
+
+//   EXPECT_TRUE(ComplexNumber::equalsZero(z1));
+//   EXPECT_TRUE(ComplexNumber::equalsZero(z2));
+//   EXPECT_FALSE(ComplexNumber::equalsZero(z3));
+// }
+
+// Test equality operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, EqualityOperator) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2(1.0, 2.0);
+  ComplexNumber z3(1.1, 2.0);
+
+  EXPECT_TRUE(z1 == z2);
+  EXPECT_FALSE(z1 == z3);
+}
+
+// Test inequality operator
+TEST_F(Fedorets_Ilya_ComplexNumberTest, InequalityOperator) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber z2(1.1, 2.0);
+
+  EXPECT_TRUE(z1 != z2);
+}
+
+// Test edge cases
+TEST_F(Fedorets_Ilya_ComplexNumberTest, EdgeCases) {
+  // Very small numbers
+  ComplexNumber z1(1e-300, 1e-300);
+  ComplexNumber z2(1e-300, 1e-300);
+  EXPECT_TRUE(z1 == z2);
+
+  // Very large numbers
+  ComplexNumber z3(1e300, 1e300);
+  ComplexNumber z4(1e300, 1e300);
+  EXPECT_TRUE(z3 == z4);
+}
+
+// Test complex arithmetic properties
+TEST_F(Fedorets_Ilya_ComplexNumberTest, ArithmeticProperties) {
+  ComplexNumber z1(3.0, 4.0);
+  ComplexNumber z2(1.0, 2.0);
+  ComplexNumber z3(2.0, 3.0);
+
+  // Associative property of addition
+  ComplexNumber sum1 = (z1 + z2) + z3;
+  ComplexNumber sum2 = z1 + (z2 + z3);
+  EXPECT_TRUE(sum1 == sum2);
+
+  // Distributive property
+  ComplexNumber dist1 = z1 * (z2 + z3);
+  ComplexNumber dist2 = z1 * z2 + z1 * z3;
+  EXPECT_TRUE(dist1 == dist2);
+}
+
+// Test complex number with zero
+TEST_F(Fedorets_Ilya_ComplexNumberTest, ZeroOperations) {
+  ComplexNumber z1(1.0, 2.0);
+  ComplexNumber zero(0.0, 0.0);
+
+  // Addition with zero
+  EXPECT_TRUE(z1 + zero == z1);
+
+  // Subtraction with zero
+  EXPECT_TRUE(z1 - zero == z1);
+
+  // Multiplication with zero
+  EXPECT_TRUE(z1 * zero == zero);
+}