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verifyGreaterThan

Class: matlab.unittest.qualifications.Verifiable
Package: matlab.unittest.qualifications

Verify value is greater than specified value

Description

example

verifyGreaterThan(testCase,actual,floor) verifies that all elements of actual are greater than all elements of floor.

example

verifyGreaterThan(testCase,actual,floor,diagnostic) also associates the diagnostic information in diagnostic with the qualification.

Input Arguments

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Test case object, specified as an instance of the matlab.unittest.qualifications.Verifiable class. Because the matlab.unittest.TestCase class subclasses matlab.unittest.qualifications.Verifiable and inherits its methods, testCase is typically a matlab.unittest.TestCase instance.

Value to test, specified as a numeric array. The sizes of actual and floor must be the same or be compatible. See Compatible Array Sizes for Basic Operations for more information about compatible arrays.

Minimum value, specified as a numeric array. The sizes of actual and floor must be the same or be compatible. See Compatible Array Sizes for Basic Operations for more information about compatible arrays.

Diagnostic information to display when the qualification passes or fails, specified as a string array, character array, function handle, or array of matlab.unittest.diagnostics.Diagnostic objects.

Depending on the test runner configuration, the testing framework might display diagnostics when the qualification passes or fails. By default, the framework displays diagnostics only when the qualification fails. You can override the default behavior by customizing the test runner. For example, use a DiagnosticsOutputPlugin instance to display both failing and passing event diagnostics.

Example: "My Custom Diagnostic"

Example: @dir

Attributes

Sealedtrue

To learn about attributes of methods, see Method Attributes.

Examples

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Create a test case for interactive testing.

testCase = matlab.unittest.TestCase.forInteractiveUse;

Verify that 3 is greater than 2.

verifyGreaterThan(testCase,3,2)
Verification passed.

Test if 5 is greater than 9. The test fails.

verifyGreaterThan(testCase,5,9)
Verification failed.
    ---------------------
    Framework Diagnostic:
    ---------------------
    verifyGreaterThan failed.
    --> The value must be greater than the minimum value.
    
    Actual Value:
         5
    Minimum Value (Exclusive):
         9
    ------------------
    Stack Information:
    ------------------
    In C:\work\CompareTwoNumbersExample.m (CompareTwoNumbersExample) at 16

Create a test case for interactive testing.

testCase = matlab.unittest.TestCase.forInteractiveUse;

Test if each element of the vector [5 6 7] is greater than the floor value 2.

verifyGreaterThan(testCase,[5 6 7],2)
Verification passed.

Test if 5 is greater than each element of the floor vector [1 2 3].

verifyGreaterThan(testCase,5,[1 2 3])
Verification passed.

Test if each element of the matrix [1 2 3; 4 5 6] is greater than the floor value 4. The test fails.

verifyGreaterThan(testCase,[1 2 3; 4 5 6],4, ...
    "All elements must be greater than the floor value.")
Verification failed.
    ----------------
    Test Diagnostic:
    ----------------
    All elements must be greater than the floor value.
    ---------------------
    Framework Diagnostic:
    ---------------------
    verifyGreaterThan failed.
    --> Each element must be greater than the minimum value.
        
        Failing Indices:
             1     2     3     5
    
    Actual Value:
         1     2     3
         4     5     6
    Minimum Value (Exclusive):
         4
    ------------------
    Stack Information:
    ------------------
    In C:\work\CompareArrayToScalarExample.m (CompareArrayToScalarExample) at 22

Create a test case for interactive testing.

testCase = matlab.unittest.TestCase.forInteractiveUse;

Test if each element of the array [5 -3 2] is greater than each corresponding element of the floor array [4 -9 0] .

verifyGreaterThan(testCase,[5 -3 2],[4 -9 0])
Verification passed.

Compare an array to itself. The test fails.

verifyGreaterThan(testCase,eye(2),eye(2))
Verification failed.
    ---------------------
    Framework Diagnostic:
    ---------------------
    verifyGreaterThan failed.
    --> Each element must be greater than each corresponding element of the minimum value array.
        
        Failing Indices:
             1     2     3     4
    
    Actual Value:
         1     0
         0     1
    Minimum Value (Exclusive):
         1     0
         0     1
    ------------------
    Stack Information:
    ------------------
    In C:\work\CompareArraysExample.m (CompareArraysExample) at 17

Tips

  • verifyGreaterThan is a convenience method. For example, verifyGreaterThan(testCase,actual,floor) is functionally equivalent to the following code.

    import matlab.unittest.constraints.IsGreaterThan
    testCase.verifyThat(actual,IsGreaterThan(floor))
  • Use verification qualifications to produce and record failures without throwing an exception. Since verifications do not throw exceptions, all test content runs to completion even when verification failures occur. Typically, verifications are the primary qualification for a unit test, since they typically do not require an early exit from the test. Use other qualification types to test for violation of preconditions or incorrect test setup:

    • Use assumption qualifications to ensure that the test environment meets preconditions that otherwise do not result in a test failure. Assumption failures result in filtered tests, and the testing framework marks the tests as Incomplete. For more information, see matlab.unittest.qualifications.Assumable.

    • Use assertion qualifications when the failure condition invalidates the remainder of the current test content, but does not prevent proper execution of subsequent tests. A failure at the assertion point renders the current test as Failed and Incomplete. For more information, see matlab.unittest.qualifications.Assertable.

    • Use fatal assertion qualifications to abort the test session upon failure. These qualifications are useful when the failure is so fundamental that continuing testing does not make sense. Fatal assertion qualifications are also useful when fixture teardown does not restore the environment state correctly, and aborting testing and starting a fresh session is preferable. For more information, see matlab.unittest.qualifications.FatalAssertable.

Introduced in R2013a