Tests with registerApexTestWireAdapter fail if test run from Visual Studio Code (Salesforce Extension Pack)

[C00per]

Description

I'm testing using registerApexTestWireAdapter @wire adapter.
It runs fine if the test is launched from the Powershell. Also, it runs as expected if I launch it using the "Debug Test" option from VSC (Salesforce Extension Pack) See https://developer.salesforce.com/tools/vscode/en/lwc/testing
But if I use the "Run Test" option then DOM is not refreshed after emit() commands in Promise.resolve().then block and the test is failed.

All other tests without egisterApexTestWireAdapter @wire adapter are running fine from the VSC (Salesforce Extension Pack).

I also noticed that the error reproduced if I run the test from CMD but not from Powershell. When I run the test in Powershell it opens CMD during the execution but this time it works as expected. (Test marked green and the correct json created in C:\Users\bunig\Dev\sfdc\KPIManagement\kpimanagement.sfdx\tools\testresults\lwc)

Steps to Reproduce

1. Create a test that uses registerApexTestWireAdapter @wire adapter.

        it('renders records when data returned',  () => {
            // Create initial element
            const element = createElement('c-main-kpi-set', {
                is: MainKpiSet
            });            
            document.body.appendChild(element);
            getKPISetListAdapter.emit(mockGetKPISetList);

            return Promise.resolve().then(() => {
                const detailEls = element.shadowRoot.querySelectorAll('lightning-vertical-navigation-item');

                expect(detailEls.length).toBe(mockGetKPISetList.length);
                expect(detailEls[0].label).toBe(mockGetKPISetList[0].Name);
            });             
        });

<!-- HTML for component under test -->
                <lightning-vertical-navigation compact selected-item={selectedKpiSetId} onselect={handleSelectKPISet} data-id="navset">                       
                    <lightning-vertical-navigation-section>
                        <template if:true={KPISet}>
                            <template for:each={KPISet} for:item="row">
                                <lightning-vertical-navigation-item key={row.Id} label={row.Name} name={row.Id} title={row.nekpim__Description__c}></lightning-vertical-navigation-item>
                            </template>
                        </template>
                    </lightning-vertical-navigation-section>
                </lightning-vertical-navigation>  

// JS for component under test
    @wire(getKPISetList,{searchString: '$searchString' }) 
    getResults(result){
        this._getKPISetListRresult = result;
        if(result.data){
            this.KPISet = result.data;
        } else if (result.error) {
            this.errorMsg = result.error;
            this.KPISet = undefined;
            this.KPISetMap = undefined;
        }
    }

2. Run Test pressing the "Run Test" option.
   
   OR in CMD using the command below

c:\Users\bunig\Dev\sfdc\KPIManagement\kpimanagement\node_modules\.bin\lwc-jest -- --json --outputFile c:\Users\bunig\Dev\sfdc\KPIManagement\kpimanagement\.sfdx\tools\testresults\lwc\test-result-f5d14634-162e-4d3e-97aa-868e96092071.json --testLocationInResults --runTestsByPath force-app\main\default\lwc\mainKpiSet\__tests__\mainKpiSet.test.js --testNamePattern "renders records when data returned"

Expected Results

The test is passed as it passed if the "Debug Test" option selected or the test run from the Powershell.

Actual Results

Version

• @salesforce/sfdx-lwc-jest: 0.7.1
• Node: 12.18.0

Possible Solution

Additional context/Screenshots

[trevor-bliss]

@C00per What is the command line equivalent that the VS Code extension is running for debug mode that passes? Does that command pass when run from CMD?

Also, will you try on a newer version of @salesforce/sfdx-lwc-jest and see if you get the same results?