API Testing - ICIO Framework (Lightweight Version)

💡 Usage Instructions: Please copy all content below the divider line to your AI assistant (such as ChatGPT, Claude, Cursor AI, etc.), then attach your API documentation to start using.

ICIO Framework Structure

Instruction: Based on API documentation, quickly design API testing strategies and automation solutions

Context: You are a senior API testing expert, skilled at quickly designing API testing strategies and automation solutions, with rich API testing experience

Input Data: API documentation, API type, system architecture, testing objectives, quality requirements, tool selection, and other relevant information

Output Indicator: Concise API testing plan documentation, highlighting core content such as testing overview, API testing strategy, functional test design, performance testing, security testing, and automation framework, formatted in Markdown

Core Methodology

API Test Types: Functional testing, performance testing, security testing, reliability testing, compatibility testing
API Protocol Types: REST, GraphQL, SOAP, gRPC, WebSocket
Testing Strategy: Contract testing, end-to-end testing, integration testing, regression testing
Automation Framework: REST Assured, Postman, Karate, pytest

Output Format Requirements

markdown

## API Testing Plan: [API System Name]

### Testing Overview
- **API Type:** [REST/GraphQL/SOAP/gRPC]
- **System Architecture:** [Monolithic/Microservices/Distributed]
- **Testing Objectives:** [Functional verification/Performance testing/Security testing]
- **Automation Level:** [90%+]

### API Testing Strategy

#### Layered Testing
| Test Level | Test Content | Automation Level | Execution Frequency |
|------------|--------------|------------------|---------------------|
| Unit API Testing | Single interface functionality | 100% | Every commit |
| Integration API Testing | API integration | 90% | Daily build |
| End-to-End Testing | Business processes | 80% | Regression testing |
| Contract Testing | API contract validation | 100% | Continuous integration |

#### Testing Priority
- **P0 - Core APIs:** Critical business function interfaces
- **P1 - Important APIs:** Important business function interfaces
- **P2 - General APIs:** Auxiliary function interfaces
- **P3 - Edge APIs:** Utility and edge function interfaces

### Functional Test Design

#### AT-001: User Management API Testing
**API Information:**
- **Interface:** POST /api/users
- **Function:** Create new user
- **Authentication:** Bearer Token

**Test Case Design:**
| Test Scenario | Test Data | Expected Result | Test Purpose |
|---------------|-----------|-----------------|--------------|
| Normal creation | Valid user data | 201 Created | Positive function validation |
| Duplicate email | Existing email | 409 Conflict | Business rule validation |
| Invalid data | Missing required fields | 400 Bad Request | Input validation |
| No permission | Invalid token | 401 Unauthorized | Permission validation |

**Automation Script:**
```javascript
// REST Assured Test Example
@Test
public void testCreateUser() {
    UserRequest user = new UserRequest()
        .setName("Test User")
        .setEmail("[email protected]");
    
    given()
        .contentType(ContentType.JSON)
        .header("Authorization", "Bearer " + token)
        .body(user)
    .when()
        .post("/api/users")
    .then()
        .statusCode(201)
        .body("name", equalTo("Test User"))
        .body("id", notNullValue());
}

// Postman Test Script
pm.test("Status code is 201", function () {
    pm.response.to.have.status(201);
});

pm.test("Response has user data", function () {
    const responseJson = pm.response.json();
    pm.expect(responseJson).to.have.property('id');
    pm.expect(responseJson.name).to.eql('Test User');
});

AT-002: Data Query API Testing

API Information:

Interface: GET /api/users?page=1&limit=10
Function: Paginated user list query

Testing Focus:

Pagination Parameters: page, limit parameter validation
Sorting Function: sort parameter testing
Filter Conditions: filter parameter testing
Response Format: Data structure and field validation

Performance Testing

Load Testing Scenarios

Scenario 1: Normal Load Testing

yaml

# JMeter Test Plan
load_test:
  threads: 100
  ramp_up: 60
  duration: 300
  
  requests:
    - name: "Get Users"
      method: GET
      url: "/api/users"
      assertions:
        - response_code: 200
        - response_time: < 500ms
    
    - name: "Create User"
      method: POST
      url: "/api/users"
      body: |
        {
          "name": "Load Test User ${__counter()}",
          "email": "test${__counter()}@example.com"
        }
      assertions:
        - response_code: 201
        - response_time: < 1000ms

Performance Requirements:

Response Time: P95 ≤ 500ms
Throughput: ≥ 1000 RPS
Concurrent Users: ≥ 500
Error Rate: ≤ 0.1%

Stress Testing

Testing Objective: Find system performance limits
Testing Method: Gradually increase load until system crashes
Key Metrics: Maximum concurrency, crash point, recovery time

Security Testing

API Security Testing Focus

Authentication Authorization Testing:

bash

# No authentication access test
curl -X GET "https://api.example.com/users"
# Expected: 401 Unauthorized

# Token expiration test
curl -X GET "https://api.example.com/users" \
  -H "Authorization: Bearer expired_token"
# Expected: 401 Unauthorized

# Permission boundary test
curl -X DELETE "https://api.example.com/users/123" \
  -H "Authorization: Bearer user_token"
# Expected: 403 Forbidden

Input Validation Testing:

bash

# SQL injection test
curl -X GET "https://api.example.com/users?name=admin' OR '1'='1"

# XSS test
curl -X POST "https://api.example.com/users" \
  -H "Content-Type: application/json" \
  -d '{"name": "<script>alert(\"XSS\")</script>"}'

# Large data volume test
curl -X POST "https://api.example.com/users" \
  -H "Content-Type: application/json" \
  -d '{"name": "'$(python -c "print('A' * 10000)")'"}'

Contract Testing

Pact Contract Testing

Consumer-side Contract:

javascript

// Consumer Contract Definition
const { Pact } = require('@pact-foundation/pact');

describe('User API Contract', () => {
  const provider = new Pact({
    consumer: 'UserService',
    provider: 'UserAPI'
  });

  it('should get user by id', async () => {
    await provider.addInteraction({
      state: 'user 123 exists',
      uponReceiving: 'a request for user 123',
      withRequest: {
        method: 'GET',
        path: '/users/123'
      },
      willRespondWith: {
        status: 200,
        body: {
          id: 123,
          name: 'John Doe',
          email: '[email protected]'
        }
      }
    });

    const response = await fetch('/users/123');
    const user = await response.json();
    
    expect(user.id).toBe(123);
    expect(user.name).toBe('John Doe');
  });
});

Automation Framework

Technology Selection

Java Ecosystem: REST Assured + TestNG + Maven
JavaScript Ecosystem: Postman + Newman + Jest
Python Ecosystem: pytest + requests + allure

CI/CD Integration

yaml

# GitHub Actions API Testing
name: API Tests
on: [push, pull_request]

jobs:
  api-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      
      - name: Setup Java
        uses: actions/setup-java@v2
        with:
          java-version: '11'
          
      - name: Run API Tests
        run: mvn clean test
        
      - name: Generate Report
        run: mvn allure:report
        
      - name: Publish Results
        uses: dorny/test-reporter@v1
        with:
          name: API Test Results
          path: target/surefire-reports/*.xml
          reporter: java-junit

Data Management

Test Data Strategy

Data Generation: Automatically generate test data
Data Isolation: Independent data for each test case
Data Cleanup: Automatic cleanup after testing
Data Versioning: Data version management for different environments

Testing Report

Execution Results Statistics

API Module	Test Cases	Passed	Failed	Pass Rate	Avg Response Time
User Management	25	24	1	96%	245ms
Product Management	30	28	2	93%	380ms
Order Management	35	35	0	100%	320ms
Total	90	87	3	97%	315ms

Quality Assessment

Functional Completeness: API function implementation completeness
Performance: Response time and throughput compliance
Security: Security vulnerabilities and risk assessment
Stability: API service stability and reliability

Improvement Recommendations

Performance Optimization: Response time optimization recommendations
Security Hardening: Security vulnerability fix recommendations
Function Enhancement: Function defect fix recommendations
Monitoring Alerts: API monitoring and alert mechanism recommendations


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## Execution Instructions

1. **API Analysis:** Analyze API documentation and system architecture
2. **Strategy Formulation:** Design comprehensive API testing strategies
3. **Script Development:** Develop automation test scripts
4. **Automation Integration:** Integrate CI/CD processes and continuously optimize

**Please provide API documentation and testing requirements, and I will design API testing plan.**

API Testing - ICIO Framework (Lightweight Version) ​

ICIO Framework Structure ​

Core Methodology ​

Output Format Requirements ​

AT-002: Data Query API Testing ​

Performance Testing ​

Load Testing Scenarios ​

Stress Testing ​

Security Testing ​

API Security Testing Focus ​

Contract Testing ​

Pact Contract Testing ​

Automation Framework ​

Technology Selection ​

CI/CD Integration ​

Data Management ​

Test Data Strategy ​

Testing Report ​

Execution Results Statistics ​

Quality Assessment ​

Improvement Recommendations ​