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unit_tests.cpp
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unit_tests.cpp
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// Unit tests for Matrix class in Linear Algebra library
// Completed by Hou Wai Wan for Brain Corp assesment
#include "linear_algebra.h"
#include <iostream>
#include <cassert>
#include <vector>
void testDefaultConstructor() {
std::cout << "Testing Default Constructor...\n";
LinearAlgebra::Matrix<int> matrix(3, 3);
std::cout << "Expected Output: A 3x3 matrix with uninitialized values\n";
assert(matrix.getRows() == 3 && matrix.getCols() == 3);
std::cout << "Actual Output: \n" << matrix << "\n";
}
void testListConstructor() {
std::cout << "Testing List Constructor...\n";
LinearAlgebra::Matrix<int> matrix(2, 2, {{1, 2}, {3, 4}});
std::cout << "Expected Output:\n1 2 \n3 4 \n";
assert(matrix.get(0, 0) == 1 && matrix.get(0, 1) == 2 && matrix.get(1, 0) == 3 && matrix.get(1, 1) == 4);
std::cout << "Actual Output: \n" << matrix << "\n";
}
void testVectorConstructor() {
std::cout << "Testing Vector Constructor...\n";
std::vector<std::vector<int>> vector_example = {
{1, 2},
{3, 4}
};
LinearAlgebra::Matrix<int> matrix(2, 2, vector_example);
std::cout << "Expected Output:\n1 2 \n3 4 \n";
assert(matrix.get(0, 0) == 1 && matrix.get(0, 1) == 2 && matrix.get(1, 0) == 3 && matrix.get(1, 1) == 4);
std::cout << "Actual Output: \n" << matrix << "\n";
}
void testListConstructorException() {
std::cout << "Testing List Constructor Exception...\n";
try {
LinearAlgebra::Matrix<int> matrix(2, 2, {{1, 2, 3}, {4, 5, 6}});
} catch (const std::out_of_range& e) {
std::cout << "Expected Output: Initializer list exceeds matrix dimensions\n";
std::cout << "Actual Output: " << e.what() << "\n";
}
}
void testGetAndSet() {
std::cout << "\nTesting Get and Set...\n";
LinearAlgebra::Matrix<int> matrix(3, 3);
matrix.set(1, 1, 5);
std::cout << "Expected Output: 5\n";
assert(matrix.get(1, 1) == 5);
std::cout << "Actual Output: " << matrix.get(1, 1) << "\n";
}
void testTranspose() {
std::cout << "\nTesting Transpose...\n";
LinearAlgebra::Matrix<int> matrix(2, 3, {{1, 2, 3}, {4, 5, 6}});
matrix.transpose();
std::cout << "Expected Output:\n1 4 \n2 5 \n3 6 \n";
assert(matrix.getRows() == 3 && matrix.getCols() == 2);
assert(matrix.get(0, 0) == 1 && matrix.get(0, 1) == 4);
assert(matrix.get(1, 0) == 2 && matrix.get(1, 1) == 5);
assert(matrix.get(2, 0) == 3 && matrix.get(2, 1) == 6);
std::cout << "Actual Output: \n" << matrix << "\n";
}
void testMultiplication() {
std::cout << "Testing Multiplication...\n";
LinearAlgebra::Matrix<int> matrixA(2, 3, {{1, 2, 3}, {4, 5, 6}});
LinearAlgebra::Matrix<int> matrixB(3, 2, {{7, 8}, {9, 10}, {11, 12}});
LinearAlgebra::Matrix<int> result = matrixA * matrixB;
assert(result.get(0, 0) == 58 && result.get(0, 1) == 64);
assert(result.get(1, 0) == 139 && result.get(1, 1) == 154);
std::cout << "Expected Output:\n58 64 \n139 154 \n";
std::cout << "Actual Output: \n" << result << "\n";
}
void testMultiplicationException() {
std::cout << "Testing Multiplication Exception...\n";
LinearAlgebra::Matrix<int> matrixA(2, 3, {{1, 2, 3}, {4, 5, 6}});
LinearAlgebra::Matrix<int> matrixB(2, 2, {{7, 8}, {9, 10}});
try {
LinearAlgebra::Matrix<int> result = matrixA * matrixB;
} catch (const std::invalid_argument& e) {
std::cout << "Expected Output: Matrices are not conformant for multiplication\n";
std::cout << "Actual Output: " << e.what() << "\n";
}
}
void testLargeMultiplication() {
std::cout << "\nTesting Large Multiplication...\n";
// Create matrices A (20x30) and B (30x40)
LinearAlgebra::Matrix<int> matrixA(10, 30, {
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
});
LinearAlgebra::Matrix<int> matrixB(30, 20, {
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
});
std::cout << "20x30 Matrix:\n" << matrixA << "\n";
std::cout << "30x40 Matrix:\n" << matrixB << "\n";
// Multiplication
LinearAlgebra::Matrix<int> result = matrixA * matrixB;
assert(result.getRows() == matrixA.getRows() && result.getCols() == matrixB.getCols());
std::cout << "Result of 20x30 multiplied by 30x40:\n" << result << "\n";
}
void testLargeTranspose() {
std::cout << "\nTesting Large Transpose...\n";
// Create matrix (10x30)
LinearAlgebra::Matrix<int> matrix(10, 30, {
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30},
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}
});
// Transpose
matrix.transpose();
assert(matrix.getRows() == 30 && matrix.getCols() == 10);
std::cout << "Transposed 20x30 matrix:\n" << matrix << "\n";
}
int main() {
// All test cases
testDefaultConstructor();
testListConstructor();
testVectorConstructor();
testListConstructorException();
testGetAndSet();
testTranspose();
testMultiplication();
testMultiplicationException();
testLargeMultiplication();
testLargeTranspose();
std::cout << "\nAll tests passed!" << std::endl;
return 0;
}