drake::test Namespace Reference

Classes
struct	AlignedStorage
	Helper struct for the below function. More...
class	DiagnosticPolicyTestBase
	A base class for test fixtures that involve DiagnosticPolicy output. More...
class	LimitMalloc
	Instantiate this class in a unit test scope where malloc (and realloc, etc.) should be disallowed or curtailed. More...
struct	LimitMallocParams
	Parameters to control malloc limits. More...
class	SetEnv

Functions
template<typename T , typename InvariantPred = std::equal_to<T>>
bool	IsMemcpyMovable (const T &value, const InvariantPred &invariant_pred=InvariantPred())
	Checks if value of T type is movable via memcpy. More...
template<typename T = double>
static Eigen::Matrix< Polynomial< T >, Eigen::Dynamic, Eigen::Dynamic >	RandomPolynomialMatrix (Eigen::Index num_coefficients_per_polynomial, Eigen::Index rows, Eigen::Index cols)
	Obtains a matrix of random unvariate Polynomials of the specified size. More...

Function Documentation

IsMemcpyMovable()

bool drake::test::IsMemcpyMovable	(	const T &	value,
		const InvariantPred &	invariant_pred = InvariantPred()
	)

Checks if value of T type is movable via memcpy.

That is, it tests memcpy on value keeps a given invariant between value and a copy of it. It uses a binary function object invariant_pred to check for invariance.

Note

Eigen's reallocation mechanisms have an issue. It is moving bytes using memcpy without calling a move constructor. As a result, if a Scalar type of Eigen matrix/array is not IsMemcpyMovable, we have undefined behavior when conservativeResize method is called. This should always be used to test a Scalar used within an Eigen::EigenBase<...> object. Please see https://github.com/RobotLocomotion/drake/issues/5974 for more information.

RandomPolynomialMatrix()

static Eigen::Matrix<Polynomial<T>, Eigen::Dynamic, Eigen::Dynamic> drake::test::RandomPolynomialMatrix ( Eigen::Index  num_coefficients_per_polynomial, Eigen::Index  rows, Eigen::Index  cols  )

static

Obtains a matrix of random unvariate Polynomials of the specified size.