Create a test case for interactive testing.

import matlab.unittest.TestCase
import matlab.unittest.constraints.HasNaN

testCase = TestCase.forInteractiveUse;

Test that the value NaN satisfies the constraint.

testCase.verifyThat(NaN, HasNaN)

Interactive verification passed.

Assert that an array contains a NaN value.

testCase.assertThat([0 1 1 2 3 5 8 13], HasNaN)

Interactive assertion failed.

---------------------
Framework Diagnostic:
---------------------
HasNaN failed.
--> At least one element must be NaN.

Actual double:
         0     1     1     2     3     5     8    13
Assertion failed.

The array does not contain a NaN value.

Verify that an array contains a NaN value.

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

Interactive verification passed.

Assert that a complex number satisfies the constraint.

testCase.assertThat(42+NaN*1i, HasNaN)

Interactive assertion passed.

Verify that an array does not contain any NaN values.

testCase.verifyThat([Inf -7+Inf*1i], ~HasNaN)

Interactive verification passed.

Negating the HasNaN constraint does not ensure the value is finite, only that it does not contain any NaN values.