matlab.unittest.constraints.IsSparse class

Package: matlab.unittest.constraints
Superclasses: matlab.unittest.constraints.BooleanConstraint

Constraint specifying sparse array

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Construction

IsSparse creates a constraint specifying a sparse array. This constraint is satisfied only when the actual value is sparse.

Copy Semantics

Value. To learn how value classes affect copy operations, see Copying Objects in the MATLAB® documentation.

Examples

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Create a test case for interactive testing.

import matlab.unittest.TestCase
import matlab.unittest.constraints.IsSparse

testCase = TestCase.forInteractiveUse;

Create an identity matrix, and test if it is sparse.

F = eye(7);
testCase.verifyThat(F, IsSparse)
Interactive verification failed.

---------------------
Framework Diagnostic:
---------------------
IsSparse failed.
--> The value must be sparse.

Actual Value:
         1     0     0     0     0     0     0
         0     1     0     0     0     0     0
         0     0     1     0     0     0     0
         0     0     0     1     0     0     0
         0     0     0     0     1     0     0
         0     0     0     0     0     1     0
         0     0     0     0     0     0     1

The matrix, F, is a full matrix.

Convert F to a sparse matrix and retest for sparsity.

S = sparse(F);
testCase.verifyThat(S, IsSparse)
Interactive verification passed.

See Also

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