How to run a function based on variable value which is dependent on other function in specs jasmine?

user_7160592 0
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Requirement is to run testRunner function based on variable 'data' which is dependent on function 'getSteps'

My code as below

    function getSteps()
    it('test', async function () {
            testStepsArray =  await excel.getColValue('smoke.xlsx', 'Sheet1', 'A')
            return testStepsArray
        });
    }  
    
 function testRunner(count) { **//i want to run this function based on value of data variable below**
          it('test', async function () {        
                for(var j=0;j<count;j++)
                {
                    ...
                }
                            
            });
        }  
        
        
    var data =  getSteps(); 
    console.log(data.length+"LENGTH")    **//returns Cannot read property 'length' of undefined.**
        for(var i=1; i<= data.length;i+=count)   
        {
            ... 
            testRunner(i)
        }

i think last block is not waiting for results of getSteps. Please suggest.

Update: After inputs, I modified as below and i see difference. I now can get data values properly but execution fails when there is a function wrapped around spec but works with regular function

function testRunner(count) { 
 it('test', async function () {     
    for(var j=0;j<count;j++)
    {
            ...
    }               
   });
}  
    
function test(){
    ...
}  

let promise = new Promise((resolve,reject)=>{
    it('test', async function () {
            testStepsArray =  await excel.getColValue('smoke.xlsx', 'Sheet1', 'A')
            resolve(testStepsArray)
        });
    }  
})
promise.then((data)=>{
    console.log(data.length+"LENGTH")
        for(var i=1; i<= data.length;i+=count)   
        {
            testRunner(i) //fails if function is like testrunner() - function wrraped around specs
            test() //works if function is like test() - regular function
        }
})

Update 2:Promise rejection Error logs

[32m. [0mError: 'it' should only be used in 'describe' function
    at ensureIsNotNested (\nodejs\node_modules\jasmine_3.5.0\node_modules\jasmine-core\lib\jasmine-core\jasmine.js:1786:15)
    at Env.it (\nodejs\node_modules\jasmine_3.5.0\node_modules\jasmine-core\lib\jasmine-core\jasmine.js:1933:7)
    at it (nodejs\node_modules\jasmine_3.5.0\node_modules\jasmine-core\lib\jasmine-core\jasmine.js:6576:21)
    at testRunner (webapps\mysamples\testRunner.js:66:4)
    at webapps\mysamples\testRunner.js:59:4
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
protractor jasmine javascript
1 Answers

What about Promise? It waits until your function resolve "the data"

let promise = new Promise((resolve,reject)=>{
    it('test', async function () {
            testStepsArray =  await excel.getColValue('smoke.xlsx', 'Sheet1', 'A')
            resolve(testStepsArray)
        });
    }  
})
promise.then((data)=>{
    console.log(data.length+"LENGTH")
        for(var i=1; i<= data.length;i+=count)   
        {
            ... 
            testRunner(i)
        }
})

Read more about promise

Update

A rejected promise means your execution of code is not work as expected.

i.e. A website GET request.

let promise = new Promise((resolve,reject)=>{
    $.get(some_website, function(data, status, error){
        if(status==200){
            //Get request success, then return the data from website
            resolve(data);
        } else {
            //Get request fail, return error message
            reject(error);
        }
    });
})

I guess you are not successfully running excel.getColValue('smoke.xlsx', 'Sheet1', 'A') try to add the reject(something) for fail case. Then in your consuming part, add this:

promise.then((data)=>{
    //blah blah blah
}).catch((err)=>{
   console.log(err) //read what's up with your operation
})

Or if you find that your promise got stuck in the for loop(did not wait the for loop complete, please use promise.all() References

user_60978700
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