Test a real local request
See this course’s project requirements
A localhost-only read-only JSON book API with defined routes, 200/404 responses, headers and an automated client contract test.
Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.
What to include
- A three-route API contract with status and typed body.
- A loopback-only server boundary record.
- A checked json response with matching headers.
- A routing test matrix with exact-path boundaries.
- A real local transport test with bounded cleanup.
- A complete api handoff with a controlled contract change.
Review and revise
Use these criteria to check your work and choose what to improve.
- The implementation or declared simulation follows the supplied contract and retains inspectable original inputs.
- Normal, boundary and rejected cases are recorded with expected versus observed results.
- The changed case has a correct explanation and does not rely on hidden state.
- The project includes source, outputs, instructions and honest tool, privacy and verification limits.
Want more background?
The idea in everyday life
test_api.py starts one owned loopback server and requests /books,/books/2,/books/99,/wrong, then always closes the server.
An integration test crosses a real local HTTP connection, then checks status, headers and parsed body. A 200 alone cannot establish that the returned records fit the contract.
Test a real local request — original worked practice
An integration test crosses a real local HTTP connection, then checks status, headers and parsed body. A 200 alone cannot establish that the returned records fit the contract.
test_api.py starts one owned loopback server and requests /books,/books/2,/books/99,/wrong, then always closes the server.
1. Step 1
Run python test_api.py.
You should see: Four actual HTTP contract cases pass.
This keeps the rule and its observable result together.
2. Step 2
Read status and parse body in each case.
You should see: Success and error JSON both match their declared objects.
This keeps the rule and its observable result together.
3. Step 3
Check Content-Length and Content-Type.
You should see: The headers agree with the actual body.
This keeps the rule and its observable result together.
4. Step 4
Inspect finally cleanup and thread join.
You should see: A real local transport test with bounded cleanup.
This keeps the rule and its observable result together.
What to finish
A real local transport test with bounded cleanup.
Watch for this
Replacing a real request with a direct handler call and claiming that status, headers, and transport were tested.
How can I tell I understand it?
Explain and demonstrate the required distinction: An integration test crosses a real local HTTP connection, then checks status, headers and parsed body. A 200 alone cannot establish that the returned records fit the contract. Show a changed input and the expected result without weakening this contract.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Sources and further reading
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Source & access notes · checked 2026-10-01
Relevant documented module/API behavior inspected during expansion authoring; actual execution evidence is recorded separately. No grant eligibility is established.
Access: Official page retrieved with the web reader on 2026-10-01. Documentation reading does not certify execution in every native tool or browser.
Reuse: Original local practice files, fictional data, worked examples and questions. Concepts paraphrased and linked; source exercises are not copied.
Source & access notes · checked 2026-10-01
Relevant documented module/API behavior inspected during expansion authoring; actual execution evidence is recorded separately. No grant eligibility is established.
Access: Official page retrieved with the web reader on 2026-10-01. Documentation reading does not certify execution in every native tool or browser.
Reuse: Original local practice files, fictional data, worked examples and questions. Concepts paraphrased and linked; source exercises are not copied.
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