API Mock Tutorial: Applying Rules (Part 2)
In the previous section Applying Rules, we creating a simple authentication mock using rules.
In this section we will look at extending the /auth endpoint by adding further responses, to help mimic and deliver a more realistic service.
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Open http://localhost:8000/index.html in your browser
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Under the HTTP tab, locate the mock /auth and click the View button
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From the HTTP Endpoint page, click on the Add Rule button
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In the New Rule window enter the following:
- application/json as the Content Type
- 400 as the HTTP Status Code
- {"msg" : "username is required"} in the Response Body
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Click on the Add Rule Condition button
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In the New Rule Condition window:
- Select Request Parameter in the Match On field
- Enter the value username in the field just below this
- Select Is Missing in the Comparator field
- Click the Add Arg button
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Click the Done button and then the Add Rule button
You should now see 2 rules in the HTTP Endpoint page with this latest rule in 2nd place in the list (i.e Order is 2).
- Looking closely at the rule in the list, you should be able to see 4 small icons; 2 arrows, a pause icon and a X.
- Click on the up arrow on the 400 rule (we just added) so this is moved to position 1 (i.e it becomes Order no 1).
- Lastly, click the Save button to update the mock.
Open a terminal window and run the following cURL command:
- curl -i -H 'Content-Type: application/x-www-form-urlencoded' -d 'username=&password=foobar' -X POST http://localhost:8001/auth
This should return a 400 response stating the username is required.