issue occurring after inserting a new parameter

I encountered an issue with my test case after adding a new parameter tiger to the method swimming.

Despite passing the new parameter tiger to my test case, it continues to break.

Update: I am receiving an "undefined grid" error at this line. Any suggestions on how to proceed? Let grid = $('#henTigerGrid').data('kendoGrid');

let tiger = {
    "nail": "hens/v1/sky/88888888888888",
    "columns": [],
    "title": "DOCUMENTS",
    "excelFileName": "ViewAiringsExport",
    "mainId": 88888888888888
};

Code snippet:

Error Log:

[0] 14 09 2017 19:56:26.250:DEBUG [web-server]: serving (cached): C:/Desktop/08-31-afternoon/webcomponent/src/main/webapp/app/components/finan    LOG: 'model.skyName--->text.txt'
    LOG: 'tiger.naile---->hens/v1/sky/88888888888888'
    Chrome 60.0.3112 (Windows 10 0.0.0) Jasmine Unit Tests: Help-Dashboard-Manage-Tiger Add start Finger FAILED
[0]     TypeError: Cannot read property '_data' of undefined
    Chrome 60.0.3112 (Windows 10 0.0.0): Executed 14 of 29 (1 FAILED) (0 secs / 2.796 secs)

Code Block:

swimming(evt, dropValue, tiger) {
    // Code logic here 
}

Test Case:

describe('Jasmine Unit Tests: Help-Dashboard-Manage-Tiger', () => {
    // Test case details
});
javascriptangularjstypescriptjasminemocha.js

Answer №1

Great news! I managed to locate the solution. By simply removing this particular line, the error appears to be resolved.

                "skyId": this._dataSource._data.length + 1,

Answer №2

Your function relies on a jQuery lookup 

$('#henTigerGrid').data('kendoGrid');
to find an element with the id #henTigerGrid. However, this id is not defined in the provided unit test, leading to errors when trying to access the property _data of the lookup.

This highlights an issue with using service locator patterns (such as jQuery lookups), as they create hidden dependencies that can cause problems later on, like in your current situation. By adopting a more dependency injection style, you could pass the attribute value (or the DOM element itself) as a parameter to the function. This way, any missing parameters would be caught early on, preventing errors from occurring in the first place.

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