Function TestNewFromElements

math/matrix/matrix_test.go:24–69

(t *testing.T)

}

func TestNewFromElements(t *testing.T) {
	// Test case 1: Valid matrix
	validElements := [][]int{
		{1, 2, 3},
		{4, 5, 6},
	}
	expectedm1 := matrix.New(2, 3, 0)
	for i := 0; i < len(validElements); i++ {
		for j := 0; j < len(validElements[0]); j++ {
			err := expectedm1.Set(i, j, validElements[i][j])
			if err != nil {
				t.Errorf("copyMatrix.Set error: %s", err.Error())
			}
		}
	}

	m1, err1 := matrix.NewFromElements(validElements)
	if err1 != nil {
		t.Errorf("NewFromElements(validElements) returned an error: %v", err1)
	}
	res := m1.CheckEqual(expectedm1)
	if res != true {
		t.Errorf("NewFromElements(validElements) returned %v, expected %v", m1, expectedm1)
	}

	// Test case 2: Invalid matrix with different column counts
	invalidElements := [][]int{
		{1, 2, 3},
		{4, 5},
	}
	_, err2 := matrix.NewFromElements(invalidElements)
	expectedError2 := errors.New("rows have different numbers of columns")
	if err2 == nil || err2.Error() != expectedError2.Error() {
		t.Errorf("NewFromElements(invalidElements) returned error: %v, expected error: %v", err2, expectedError2)
	}

	// Test case 3: Empty matrix
	emptyElements := [][]int{}
	m3, err3 := matrix.NewFromElements(emptyElements)
	if err3 != nil {
		t.Errorf("NewFromElements(emptyElements) returned an error: %v", err3)
	}
	if m3.Rows() != 0 || m3.Columns() != 0 {
		t.Errorf("NewFromElements(emptyElements) returned %v, expected nil", m3)
	}
}

func TestMatrixGet(t *testing.T) {
	// Create a sample matrix for testing