matlab.unittest.constraints.ContainsSubstring class

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

Constraint specifying string containing substring

Construction

ContainsSubstring(substring) creates a constraint that specifies a string containing a substring, substring. The constraint is satisfied only if the actual value contains an expected string.

ContainsSubstring(substring,Name,Value) provides a constraint with additional options specified by one or more Name,Value pair arguments. Name must appear inside single quotes (''). You can specify several name-value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

Input Arguments

substring

Text that must be contained within the actual value, specified as a string. substring can include newline characters.

Name-Value Pair Arguments

Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside single quotes (' '). You can specify several name and value pair arguments in any order as Name1,Value1,...,NameN,ValueN.

'IgnoringCase'

Indicator if the constraint is insensitive to case, specified as false or true (logical 0 or 1)

Default: false

'IgnoringWhitespace'

Indicator if the constraint is insensitive to whitespace, specified as false or true (logical 0 or 1)

Default: false

Properties

IgnoreCase

Indicator if the constraint is insensitive to case, specified in the name-value pair argument, 'IgnoringCase'. This property applies at all levels of recursion, such as nested structures.

IgnoreWhitespace

Indicator if the constraint is insensitive to whitespace, specified in the name-value pair argument, 'IgnoringWhitespace'. This property applies at all levels of recursion, such as nested structures.

Substring

String that must be included in the actual value, specified in the input argument, substring.

Copy Semantics

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

Examples

expand all

Test That Actual Value Contains Specified Substring

Create a test case for interactive testing.

import matlab.unittest.TestCase
import matlab.unittest.constraints.ContainsSubstring

testCase = TestCase.forInteractiveUse;

Define the actual value string.

actVal = 'This Is One Long String';

Test the actVal contains the substring 'One'.

testCase.verifyThat(actVal, ContainsSubstring('One'))
Interactive verification passed.

Test the actVal contains the substring 'long'.

testCase.verifyThat(actVal, ContainsSubstring('long'))
Interactive verification failed.

---------------------
Framework Diagnostic:
---------------------
ContainsSubstring failed.
--> The string must contain the substring.

Actual String:
    This Is One Long String
Expected Substring:
    long

By default, the ContainsSubstring constraint is case sensitive.

Repeat the test ignoring case.

testCase.verifyThat(actVal, ContainsSubstring('long',...
    'IgnoringCase', true))
Interactive verification passed.

Test actVal contains the substring 'thisisone'. For the test to pass, configure the constraint to ignore whitespace and case.

testCase.verifyThat(actVal, ContainsSubstring('thisisone', ...
    'IgnoringCase', true, 'IgnoringWhitespace', true))
Interactive verification passed.

Assert that actVal does not contain the substring 'longer'.

testCase.assertThat(actVal, ~ContainsSubstring('longer',...
    'IgnoringCase', true))
Interactive verification passed.
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