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<h1><a href="../../../index.html">All files</a> / <a href="index.html">src/services/parsing</a> pythonParser.test.js</h1>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* Python Parser Test
*
* This file contains a simple test to demonstrate how to use the Python parser
* with Tree-sitter to extract code entities from Python code.
* It can be run with: node src/services/parsing/pythonParser.test.js
*/
import { TreeSitterManager } from "./treeSitterManager.js";
import { parsePython, nodeToObject } from "./python.parser.js";
import logger from "../../utils/logger.js";
/**
* Run tests for the Python parser
*/
async function <span class="fstat-no" title="function not covered" >testPythonParser(</span>) {
<span class="cstat-no" title="statement not covered" > try {</span>
// Initialize the TreeSitterManager
const manager = <span class="cstat-no" title="statement not covered" >new TreeSitterManager();</span>
// Load grammar for Python
<span class="cstat-no" title="statement not covered" > await manager.initializeGrammars(["python"]);</span>
// Check what languages were loaded
const loadedLanguages = <span class="cstat-no" title="statement not covered" >manager.getLoadedLanguages();</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Loaded languages: ${loadedLanguages.join(", ")}`);</span>
// Create a sample Python file with various code constructs
const pythonCode = <span class="cstat-no" title="statement not covered" >`</span>
# This is a sample Python file with different code constructs
import math
from os import path, system as sys_call
# Parent class (inheritance will be demonstrated)
class Animal:
"""Base class for all animals"""
def __init__(self, name):
self.name = name
def make_sound(self):
return "Some generic sound"
# Child class that inherits from Animal
class Dog(Animal):
"""Class representing a dog"""
def __init__(self, name, breed):
super().__init__(name)
self.breed = breed
# Override method from parent
def make_sound(self):
return "Woof!"
# Method specific to Dog
def fetch(self, item):
return f"{self.name} fetched the {item}!"
# Function with nested function
def process_data(data_list):
"""Process a list of data items"""
# Nested function
def validate(item):
return isinstance(item, dict) and "value" in item
result = []
for item in data_list:
if validate(item):
result.append(item["value"])
return result
# Multiple variable assignment
x, y = 10, 20
# Dictionary variable
config = {
"debug": True,
"max_items": 100,
"timeout": 30
}
# Function that uses the variables
def get_config_value(key, default=None):
"""Get a configuration value"""
return config.get(key, default)
# Async function example
async def fetch_data(url):
"""Fetch data from a URL asynchronously"""
# This would use aiohttp or similar in real code
return {"status": "success", "data": [1, 2, 3]}
# Class with method calling function
class DataProcessor:
def __init__(self, data_source):
self.data_source = data_source
self.config = config # Using the global config
def process(self):
# Call the global function
data = process_data(self.data_source)
return data
@classmethod
def create_default(cls):
return cls([{"value": i} for i in range(5)])
# Main block
if __name__ == "__main__":
# Create an instance
processor = DataProcessor.create_default()
result = processor.process()
print(f"Processed {len(result)} items")
# Create animals
dog = Dog("Rex", "German Shepherd")
print(dog.make_sound())
print(dog.fetch("ball"))
`;
// Parse the Python code using Tree-sitter
<span class="cstat-no" title="statement not covered" > if (manager.hasLanguage("python")) {</span>
const parser = <span class="cstat-no" title="statement not covered" >manager.getParserForLanguage("python");</span>
const tree = <span class="cstat-no" title="statement not covered" >parser.parse(pythonCode);</span>
<span class="cstat-no" title="statement not covered" > logger.info("Python AST root node type:", tree.rootNode.type);</span>
// Extract code entities and relationships from the AST
const { entities, relationships } = <span class="cstat-no" title="statement not covered" >parsePython(</span>
tree.rootNode,
pythonCode
);
// Print the extracted entities
<span class="cstat-no" title="statement not covered" > logger.info(`Extracted ${entities.length} code entities:`);</span>
<span class="cstat-no" title="statement not covered" > entities.forEach(<span class="fstat-no" title="function not covered" >(e</span>ntity, index) => {</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Entity ${index + 1}:`);</span>
<span class="cstat-no" title="statement not covered" > logger.info(` Type: ${entity.entity_type}`);</span>
<span class="cstat-no" title="statement not covered" > logger.info(` ID: ${entity.id}`);</span>
<span class="cstat-no" title="statement not covered" > logger.info(` Name: ${entity.name}`);</span>
<span class="cstat-no" title="statement not covered" > logger.info(` Lines: ${entity.start_line}-${entity.end_line}`);</span>
<span class="cstat-no" title="statement not covered" > logger.info(` Language: ${entity.language}`);</span>
// Print custom metadata if available
<span class="cstat-no" title="statement not covered" > if (Object.keys(entity.custom_metadata).length > 0) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(" Custom Metadata:", entity.custom_metadata);</span>
}
// Print a condensed version of the raw content (first 40 chars)
const contentPreview = <span class="cstat-no" title="statement not covered" >entity.raw_content</span>
.substring(0, 40)
.replace(/\n/g, "\\n");
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` Content: ${contentPreview}${
entity.raw_content.length > 40 ? "..." : ""
}`
);
<span class="cstat-no" title="statement not covered" > logger.info("---");</span>
});
// Analyze entity types
const entityTypes = <span class="cstat-no" title="statement not covered" >entities.reduce(<span class="fstat-no" title="function not covered" >(a</span>cc, entity) => {</span>
<span class="cstat-no" title="statement not covered" > acc[entity.entity_type] = (acc[entity.entity_type] || 0) + 1;</span>
<span class="cstat-no" title="statement not covered" > return acc;</span>
}, {});
<span class="cstat-no" title="statement not covered" > logger.info("\nEntity Types Summary:");</span>
<span class="cstat-no" title="statement not covered" > for (const [type, count] of Object.entries(entityTypes)) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(` ${type}: ${count}`);</span>
}
// Print the extracted relationships
<span class="cstat-no" title="statement not covered" > logger.info(`\nExtracted ${relationships.length} code relationships:`);</span>
// Group relationships by type
const relationshipsByType = <span class="cstat-no" title="statement not covered" >relationships.reduce(<span class="fstat-no" title="function not covered" >(a</span>cc, rel) => {</span>
<span class="cstat-no" title="statement not covered" > acc[rel.relationship_type] = (acc[rel.relationship_type] || []).concat(</span>
rel
);
<span class="cstat-no" title="statement not covered" > return acc;</span>
}, {});
// Print relationships by type
<span class="cstat-no" title="statement not covered" > for (const [type, rels] of Object.entries(relationshipsByType)) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(`\n${type} Relationships (${rels.length}):`);</span>
// Print 3 examples of each type
<span class="cstat-no" title="statement not covered" > rels.slice(0, 3).forEach(<span class="fstat-no" title="function not covered" >(r</span>el, index) => {</span>
const sourceEntity = <span class="cstat-no" title="statement not covered" >entities.find(</span>
<span class="fstat-no" title="function not covered" > (e</span>) => <span class="cstat-no" title="statement not covered" >e.id === rel.source_entity_id</span>
);
const targetEntity = <span class="cstat-no" title="statement not covered" >entities.find(</span>
<span class="fstat-no" title="function not covered" > (e</span>) => <span class="cstat-no" title="statement not covered" >e.id === rel.target_entity_id</span>
);
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` ${index + 1}. ${sourceEntity?.name || "Unknown"} -> ${
rel.target_symbol_name
}`
);
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` Source: ${sourceEntity?.entity_type || "Unknown"} (ID: ${
rel.source_entity_id
})`
);
<span class="cstat-no" title="statement not covered" > if (targetEntity) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` Target: ${targetEntity.entity_type} (ID: ${rel.target_entity_id})`
);
} else {
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` Target: Not found in file (Symbol: ${rel.target_symbol_name})`
);
}
// Print custom metadata if available
<span class="cstat-no" title="statement not covered" > if (Object.keys(rel.custom_metadata).length > 0) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(` Metadata:`, rel.custom_metadata);</span>
}
});
// If there are more than 3, just print the count
<span class="cstat-no" title="statement not covered" > if (rels.length > 3) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` ... and ${rels.length - 3} more ${type} relationships`
);
}
}
// Analyze class hierarchies
<span class="cstat-no" title="statement not covered" > logger.info("\nClass Hierarchies:");</span>
<span class="cstat-no" title="statement not covered" > relationships</span>
.filter(<span class="fstat-no" title="function not covered" >(r</span>el) => <span class="cstat-no" title="statement not covered" >rel.relationship_type === "EXTENDS_CLASS")</span>
.forEach(<span class="fstat-no" title="function not covered" >(r</span>el) => {
const sourceEntity = <span class="cstat-no" title="statement not covered" >entities.find(</span>
<span class="fstat-no" title="function not covered" > (e</span>) => <span class="cstat-no" title="statement not covered" >e.id === rel.source_entity_id</span>
);
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` ${sourceEntity?.name || "Unknown"} extends ${
rel.target_symbol_name
}`
);
});
// Count methods per class
<span class="cstat-no" title="statement not covered" > logger.info("\nMethods per Class:");</span>
<span class="cstat-no" title="statement not covered" > entities</span>
.filter(<span class="fstat-no" title="function not covered" >(e</span>ntity) => <span class="cstat-no" title="statement not covered" >entity.entity_type === "class_definition")</span>
.forEach(<span class="fstat-no" title="function not covered" >(c</span>lassEntity) => {
const methodCount = <span class="cstat-no" title="statement not covered" >entities.filter(</span>
<span class="fstat-no" title="function not covered" > (e</span>ntity) =>
<span class="cstat-no" title="statement not covered" > entity.entity_type === "method_definition" &&</span>
entity.start_line > classEntity.start_line &&
entity.end_line < classEntity.end_line
).length;
<span class="cstat-no" title="statement not covered" > logger.info(` ${classEntity.name}: ${methodCount} methods`);</span>
});
// Analyze function calls
<span class="cstat-no" title="statement not covered" > logger.info("\nFunction Call Analysis:");</span>
const functionCallsBy = <span class="cstat-no" title="statement not covered" >{};</span>
<span class="cstat-no" title="statement not covered" > relationships</span>
.filter(<span class="fstat-no" title="function not covered" >(r</span>el) => <span class="cstat-no" title="statement not covered" >rel.relationship_type === "CALLS_FUNCTION")</span>
.forEach(<span class="fstat-no" title="function not covered" >(r</span>el) => {
const sourceEntity = <span class="cstat-no" title="statement not covered" >entities.find(</span>
<span class="fstat-no" title="function not covered" > (e</span>) => <span class="cstat-no" title="statement not covered" >e.id === rel.source_entity_id</span>
);
<span class="cstat-no" title="statement not covered" > if (sourceEntity) {</span>
<span class="cstat-no" title="statement not covered" > functionCallsBy[sourceEntity.name] =</span>
functionCallsBy[sourceEntity.name] || [];
<span class="cstat-no" title="statement not covered" > functionCallsBy[sourceEntity.name].push(rel.target_symbol_name);</span>
}
});
<span class="cstat-no" title="statement not covered" > for (const [caller, called] of Object.entries(functionCallsBy)) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(` ${caller} calls: ${called.join(", ")}`);</span>
}
// Analyze import relationships
<span class="cstat-no" title="statement not covered" > logger.info("\nImport Analysis:");</span>
<span class="cstat-no" title="statement not covered" > relationships</span>
.filter(<span class="fstat-no" title="function not covered" >(r</span>el) => <span class="cstat-no" title="statement not covered" >rel.relationship_type === "IMPORTS_MODULE")</span>
.forEach(<span class="fstat-no" title="function not covered" >(r</span>el) => {
const metadata = <span class="cstat-no" title="statement not covered" >rel.custom_metadata;</span>
<span class="cstat-no" title="statement not covered" > if (metadata.fromModule) {</span>
<span class="cstat-no" title="statement not covered" > logger.info(</span>
` From ${metadata.fromModule} imports ${rel.target_symbol_name}`
);
} else {
<span class="cstat-no" title="statement not covered" > logger.info(` Imports ${rel.target_symbol_name}`);</span>
}
});
<span class="cstat-no" title="statement not covered" > logger.info("\nPython parser tests completed successfully");</span>
} else {
<span class="cstat-no" title="statement not covered" > logger.error("Python language grammar not available");</span>
}
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error(`Python parser test failed: ${error.message}`, {</span>
error: error.stack,
});
}
}
// Run the tests
<span class="cstat-no" title="statement not covered" >testPythonParser().catch(<span class="fstat-no" title="function not covered" >(e</span>rr) => {</span>
<span class="cstat-no" title="statement not covered" > logger.error("Unhandled error in Python parser test", {</span>
error: err.stack,
});
<span class="cstat-no" title="statement not covered" > process.exit(1);</span>
});
</pre></td></tr></table></pre>
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