matlab.unittest.constraints.HasInf Class

First, import the classes used in this example.

import matlab.unittest.TestCase
import matlab.unittest.constraints.HasInf

Create a test case for interactive testing.

testCase = TestCase.forInteractiveUse;

Verify that Inf satisfies the HasInf constraint.

testCase.verifyThat(Inf,HasInf)

Verification passed.

Test if the vector [1 1 2 3 5 8 13] has infinite values. The test fails because all vector elements are finite.

testCase.verifyThat([1 1 2 3 5 8 13],HasInf)

Verification failed.
    ---------------------
    Framework Diagnostic:
    ---------------------
    HasInf failed.
    --> At least one element must be Inf or -Inf.
    
    Actual Value:
         1     1     2     3     5     8    13

Test [-Inf 5 NaN]. The test passes because the vector contains an infinite value.

testCase.verifyThat([-Inf 5 NaN],HasInf)

Verification passed.

Test if a complex number with an infinite imaginary part satisfies the constraint. The test passes.

testCase.verifyThat(3+1i/0,HasInf)

Verification passed.

Test if the matrix [1 NaN; -Inf 3] does not have any infinite values. The test fails.

testCase.verifyThat([1 NaN; -Inf 3],~HasInf)

Verification failed.
    ---------------------
    Framework Diagnostic:
    ---------------------
    Negated HasInf failed.
    --> All elements must be finite or NaN.
        Failing indices:
            2
    
    Actual Value:
         1   NaN
      -Inf     3