Testability Metric code and its readme

courseProjectCode/Metrics/Readme.md

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+# Setup and Running Testability Metrics
+
+## Setup Instructions
+
+1. Clone the repository
+
+   - git clone your-repo-url
+   - cd cli-swen777
+
+2. Install dependencies and setup environment
+
+    - make
+
+    The above command will:
+    - Create a virtual environment inside ./venv
+    - Install all dependencies
+    - Install HTTPie in editable mode
+    - Run the test suite once
+
+3. Activate the virtual environment
+
+    - source venv/bin/activate
+
+4. Run the testability metrics script
+
+    - python3 courseProjectCode/Metrics/Testability.py
+
+    The above command will:
+
+    - Run all tests with coverage enabled
+    - Generate a coverage report
+    - Output the total number of test cases and test suites
+
+![](report.png)
+
+

courseProjectCode/Metrics/Testability.py

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+import subprocess # Import subprocess to run shell commands from Python
+
+def run_command(command): # function to execute shell command and returns its output as a string
+    result = subprocess.run(command, shell=True, capture_output=True, text=True)
+    return result.stdout.strip()
+
+def count_test_cases(): # Fucntion to count total test cases by collecting pytest functions
+    output = run_command("pytest --collect-only | grep '<Function' | wc -l")
+    return int(output) if output else 0
+
+def count_test_suites():# Fucntion to count total test suites by collecting pytest modules
+    output = run_command("pytest --collect-only | grep '<Module' | wc -l")
+    return int(output) if output else 0
+
+def run_coverage(): # Runs pytest with coverage to measure code coverage and display the report
+    print("\nRunning tests with coverage...")
+    subprocess.run("coverage run --source=httpie -m pytest || true", shell=True)
+    print("\nCoverage Report:")
+    subprocess.run("coverage report", shell=True)
+
+if __name__ == "__main__":
+    print("Collecting Testability Metrics for HTTPie...\n")
+    run_coverage()
+    total_tests = count_test_cases()
+    total_suites = count_test_suites()
+    print(f"Total test cases: {total_tests}")
+    print(f"Total test suites (modules): {total_suites}")