diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..eefd6ce
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,127 @@
+"""Pytest configuration and fixtures for DepAudit tests."""
+
+import json
+import tempfile
+from pathlib import Path
+
+import pytest
+
+
+@pytest.fixture
+def sample_package_json():
+    """Sample package.json for JavaScript projects."""
+    return {
+        "name": "test-project",
+        "version": "1.0.0",
+        "description": "A test project",
+        "main": "index.js",
+        "dependencies": {
+            "express": "^4.18.0",
+            "lodash": "^4.17.21"
+        },
+        "devDependencies": {
+            "jest": "^29.0.0",
+            "fsevents": "^2.3.0"
+        }
+    }
+
+
+@pytest.fixture
+def sample_requirements_txt():
+    """Sample requirements.txt for Python projects."""
+    return """
+requests>=2.28.0
+flask>=2.0.0
+pytest>=7.0.0
+"""
+
+
+@pytest.fixture
+def sample_pyproject_toml():
+    """Sample pyproject.toml for Python projects."""
+    return """
+[project]
+name = "test-project"
+version = "1.0.0"
+description = "A test project"
+requires-python = ">=3.9"
+dependencies = [
+    "requests>=2.28.0",
+    "flask>=2.0.0",
+]
+
+[project.optional-dependencies]
+dev = ["pytest>=7.0.0", "black>=22.0.0"]
+"""
+
+
+@pytest.fixture
+def sample_go_mod():
+    """Sample go.mod for Go projects."""
+    return """
+module github.com/test/project
+
+go 1.20
+
+require (
+    github.com/gin-gonic/gin v1.9.0
+    github.com/spf13/viper v1.15.0
+)
+
+require github.com/some/repo v1.2.0 // indirect
+"""
+
+
+@pytest.fixture
+def sample_cargo_toml():
+    """Sample Cargo.toml for Rust projects."""
+    return """
+[package]
+name = "test-project"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]
+serde = { version = "1.0", features = ["derive"] }
+tokio = { version = "1.0", features = ["full"] }
+
+[dev-dependencies]
+proptest = "1.0"
+"""
+
+
+@pytest.fixture
+def sample_pom_xml():
+    """Sample pom.xml for Java projects."""
+    return """<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.example</groupId>
+    <artifactId>test-project</artifactId>
+    <version>1.0.0</version>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>6.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.15.0</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>
+"""
+
+
+@pytest.fixture
+def temp_dir():
+    """Create a temporary directory for tests."""
+    with tempfile.TemporaryDirectory() as tmpdir:
+        yield Path(tmpdir)