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Testing HTTP Callouts by Implementing the HttpCalloutMock Interface : http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_classes_restful_http_testing_httpcalloutmock.htm
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public class CalloutClass { | |
public static HttpResponse getInfoFromExternalService() { | |
HttpRequest req = new HttpRequest(); | |
req.setEndpoint('http://api.salesforce.com/foo/bar'); | |
req.setMethod('GET'); | |
Http h = new Http(); | |
HttpResponse res = h.send(req); | |
return res; | |
} | |
} |
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@isTest | |
global class MockHttpResponseGenerator implements HttpCalloutMock { | |
global HTTPResponse respond(HTTPRequest req) { | |
System.assertEquals('http://api.salesforce.com/foo/bar', req.getEndpoint()); | |
System.assertEquals('GET', req.getMethod()); | |
HttpResponse res = new HttpResponse(); | |
res.setHeader('Content-Type', 'application/json'); | |
res.setBody('{"foo":"bar"}'); | |
res.setStatusCode(200); | |
return res; | |
} | |
} |
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@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 = '{"foo":"bar"}'; | |
System.assertEquals(actualValue, expectedValue); | |
System.assertEquals(200, res.getStatusCode()); | |
} | |
} |
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