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readFromSource

Test custom file adapter by reading from source

    Description

    example

    readFromSource(testerObj) tests the getData method of a custom external file adapter derived from the Simulink.data.adapters.BaseMatlabFileAdapter base class. When you create the Simulink.data.adapters.AdapterDataTester object, testerObj, you open a connection to a test file by using an instance of a custom file adapter. The object function reads data from that test file.

    Examples

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    Use a Simulink.data.adapters.AdapterDataTester object to test the getData method of an XML file adapter derived from a Simulink.data.adapters.BaseMatlabFileAdapter base class. For an example of an XML file adapter, see .

    The getData method reads data from an XML file test.xml with the following format.

    <customerData>
    <x>10</x>
    <y>15</y>
    </customerData>

    Create an instance of your file adapter.

    adapterInstance = myXMLAdapter;
    

    Create an instance of the file adapter tester object using the test file specified above.

    adapterTester = Simulink.data.adapters.AdapterDataTester(adapterInstance, 'test.xml','XML Adapter');

    Use adapterTester to read the data from your XML file. Then, check the data in the WorkspaceVariables property.

    readFromSource(adapterTester);
    variables = adapterTester.WorkspaceVariables
    
    variables = 
      Map with properties:
        Count: 2
        KeyType: char
        ValueType: double
    

    Check the data in the WorkspaceVariables map object.

    variables.keys
    
    ans = 
      1x2 cell array
        {"x"}  {"y"}

    Finally, clear the workspace variables.

    clear(adapterTester);

    Input Arguments

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    File adapter tester, specified as a Simulink.data.adapters.AdapterDataTester object.

    Version History

    Introduced in R2022b