Add tests for toqito/state_ops/schmidt_decomposition.py: 84, 138-140, 142->146, 147-155, 157->161

[purva-thakre]

toqito/toqito/state_ops/schmidt_decomposition.py

Lines 84 to 88 in 8ec4bf3

	raise ValueError(
	"InvalidDim: The value of `dim` must evenly divide"
	" `len(vec)`; please provide a `dim` array "
	"containing the dimensions of the subsystems."
	)

toqito/toqito/state_ops/schmidt_decomposition.py

Lines 137 to 140 in 8ec4bf3

	if dim is None:
	dim_x = rho.shape
	sqrt_dim = np.round(np.sqrt(dim_x))
	dim = np.array([[sqrt_dim[0], sqrt_dim[0]], [sqrt_dim[1], sqrt_dim[1]]])

toqito/toqito/state_ops/schmidt_decomposition.py

Lines 142 to 144 in 8ec4bf3

	if isinstance(dim, list):
	dim = np.array(dim)

toqito/toqito/state_ops/schmidt_decomposition.py

Lines 146 to 155 in 8ec4bf3

	if isinstance(dim, int):
	dim = np.array([dim, len(rho) / dim])
	if np.abs(dim[1] - np.round(dim[1])) >= 2 * len(rho) * eps:
	raise ValueError(
	"InvalidDim: If `dim` is an integer, `rho` must be square"
	" and `dim` must evenly divide `len(rho)`;"
	" please provide a `dim` array containing"
	" the dimensions of the subsystems."
	)
	dim[1] = np.round(dim[1])

toqito/toqito/state_ops/schmidt_decomposition.py

Lines 157 to 158 in 8ec4bf3

	if min(dim.shape) == 1 or len(dim.shape) == 1:
	dim = np.array([dim, dim])