jmeter-load-testing

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# JMeter Load Testing

## 1. Test Plan Structure

```
Test Plan
├── Thread Group
│   ├── HTTP Request Defaults
│   ├── HTTP Cookie Manager
│   ├── HTTP Header Manager
│   ├── CSV Data Set Config
│   ├── HTTP Request (Login)
│   ├── HTTP Request (Get Data)
│   └── HTTP Request (Submit)
├── View Results Tree (Debug)
├── Summary Report
└── Response Assertions
```

## 2. Thread Group Configuration

| Property | Description | Example |
|----------|-------------|---------|
| Number of Threads | Virtual users | 100 |
| Ramp-up Period | Seconds to start all threads | 60 (1 user/sec) |
| Loop Count | Iterations per thread | 10 |
| Duration | Total test duration (seconds) | 300 |
| Startup Delay | Delay before starting (seconds) | 0 |

## 3. HTTP Sampler

```xml
<!-- HTTP Request Sampler -->
<HTTPSamplerProxy>
  <stringProp name="HTTPSampler.domain">api.example.com</stringProp>
  <stringProp name="HTTPSampler.port">443</stringProp>
  <stringProp name="HTTPSampler.protocol">https</stringProp>
  <stringProp name="HTTPSampler.path">/api/v1/users</stringProp>
  <stringProp name="HTTPSampler.method">GET</stringProp>
  <elementProp name="HTTPsampler.Arguments" elementType="Arguments">
    <collectionProp name="Arguments.arguments">
      <elementProp name="limit" elementType="HTTPArgument">
        <boolProp name="HTTPArgument.always_encode">false</boolProp>
        <stringProp name="Argument.value">50</stringProp>
        <stringProp name="Argument.metadata">=</stringProp>
        <boolProp name="HTTPArgument.use_equals">true</boolProp>
        <stringProp name="Argument.name">limit</stringProp>
      </elementProp>
    </collectionProp>
  </elementProp>
</HTTPSamplerProxy>
```

## 4. CSV Data Set Config

```csv
# users.csv
username,password
alice,pass123
bob,pass456
charlie,pass789
```

```xml
<CSVDataSet>
  <stringProp name="filename">users.csv</stringProp>
  <stringProp name="variableNames">username,password</stringProp>
  <boolProp name="recycle">true</boolProp>
  <boolProp name="stopThread">false</boolProp>
  <stringProp name="sharingMode">All threads</stringProp>
</CSVDataSet>
```

## 5. Assertions

```xml
<!-- Response Assertion -->
<ResponseAssertion>
  <collectionProp name="testStrings">
    <stringProp name="">200</stringProp>
  </collectionProp>
  <stringProp name="custom_message">Expected 200 OK</stringProp>
  <intProp name="testType">16</intProp>  <!-- Contains -->
</ResponseAssertion>

<!-- JSON Assertion -->
<JSONPathAssertion>
  <stringProp name="JSON_PATH">$.status</stringProp>
  <stringProp name="EXPECTED_VALUE">success</stringProp>
  <boolProp name="JSONVALIDATION">true</boolProp>
</JSONPathAssertion>
```

## 6. Extractors (Correlation)

```xml
<!-- JSON Extractor for auth token -->
<JSONPostProcessor>
  <stringProp name="JSONPostProcessor.referenceNames">authToken</stringProp>
  <stringProp name="JSONPostProcessor.jsonPathExprs">$.token</stringProp>
  <stringProp name="JSONPostProcessor.match_numbers">1</stringProp>
</JSONPostProcessor>

<!-- Use extracted token in subsequent request -->
<HeaderManager>
  <collectionProp name="HeaderManager.headers">
    <elementProp name="Authorization" elementType="Header">
      <stringProp name="Header.name">Authorization</stringProp>
      <stringProp name="Header.value">Bearer ${authToken}</stringProp>
    </elementProp>
  </collectionProp>
</HeaderManager>
```

## 7. Listeners and Reporting

| Listener | Purpose |
|----------|---------|
| View Results Tree | Debug individual requests |

From MathiasPaulenko/ai-toolkit, MIT.

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