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fiona gentryfiona gentry 

How to resolve Illegal assignment from void to System.HttpsResponse in Test class

Hi folks,
How to resolve Illegal assignment from void to System.HttpsResponse in Test class

User-added image 
here is class 
// Set mock callout class 
        Test.setMock(HttpCalloutMock.class, new MockHttpResponseGeneratorAPI());
        
        // Call method to test.
        // This causes a fake response to be sent
        // from the class that implements HttpCalloutMock. 
        Test.starttest();
        HerokuBanSync basicAcct = new HerokuBanSync();
        basicAcct.getBANInfoUpdate('990135742');
        Test.stoptest();
        
         // Set mock callout class 
        Test.setMock(HttpCalloutMock.class, new MockHttpResponseGenerator());
        
        // Call method to test.
        // This causes a fake response to be sent
        // from the class that implements HttpCalloutMock. 
      
        HttpResponse res = basicAcct.getBANInfoUpdate('990135742');
        
        // Verify response received contains fake values
        String contentType = res.getHeader('Content-Type');
        System.assert(contentType == 'application/json');
        String actualValue = res.getBody();
        String expectedValue = '{"GSMStackableSOC__c":"false"}';
        System.assertEquals(actualValue, expectedValue);
        System.assertEquals(200, res.getStatusCode());




Thanks in advance
Fiona

 
Suraj Tripathi 47Suraj Tripathi 47
Hi fiona gentry,

try to do with this method:-

@isTest
private class CalloutClassTest {
     @isTest static void testCallout() {
        Test.setMock(HttpCalloutMock.class, new MockHttpResponseGenerator());
        HttpResponse res = CalloutClass.getInfoFromExternalService();
        String contentType = res.getHeader('Content-Type');
        System.assert(contentType == 'application/json');
        String actualValue = res.getBody();
        String expectedValue = '{"example":"test"}';
        System.assertEquals(actualValue, expectedValue);
        System.assertEquals(200, res.getStatusCode());
    }
}

I hope you find the above solution helpful. If it does, please mark it as the Best Answer to help others too.

Thanks and Regards,
Suraj Tripathi