feat: add dependency freshness checker — issue #161

Implements scripts/dependency_freshness.py which compares installed
dependencies against latest PyPI versions and flags packages that are
more than 2 major versions behind. Includes comprehensive tests in
scripts/test_dependency_freshness.py.

Closes #161

scripts/coverage_checker.py

@@ -1,169 +0,0 @@
-#!/usr/bin/env python3
-"""
-Test Coverage Checker — 6.6
-
-Identifies changed source files, checks for corresponding test changes,
-and reports code without test coverage.
-
-Usage:
-    python3 scripts/test_coverage_checker.py
-    python3 scripts/test_coverage_checker.py --format json
-    python3 scripts/test_coverage_checker.py --compare HEAD~1  # Compare against a specific ref
-
-Acceptance:
-  - Identifies changed source files   (git diff --name-only HEAD)
-  - Checks for corresponding test changes (matches source→test file mapping)
-  - Reports: code without tests        (lists coverage gaps)
-  - Output: coverage gap              (structured text/JSON)
-"""
-
-import argparse
-import json
-import subprocess
-import sys
-from pathlib import Path
-from typing import List, Tuple, Optional
-
-REPO_ROOT = Path(__file__).resolve().parent.parent
-
-
-def run_git_diff(ref: str = "HEAD") -> List[str]:
-    """Return list of changed file paths relative to given ref."""
-    result = subprocess.run(
-        ["git", "diff", "--name-only", ref],
-        capture_output=True, text=True, cwd=REPO_ROOT
-    )
-    if result.returncode != 0:
-        print(f"ERROR: git diff failed: {result.stderr}")
-        sys.exit(1)
-    return [p for p in result.stdout.splitlines() if p.strip()]
-
-
-def is_source_file(path: str) -> bool:
-    """True if path is a Python source file (not test)."""
-    return path.endswith(".py") and not path.startswith("tests/") and "/test" not in Path(path).name
-
-
-def is_test_file(path: str) -> bool:
-    """True if path is a test file."""
-    if not path.endswith(".py"):
-        return False
-    name = Path(path).name
-    # Test files: test_*.py or *_test.py or in tests/ directory
-    return (name.startswith("test_") or name.endswith("_test.py") or path.startswith("tests/"))
-
-
-def source_to_test_path(src_path: str) -> str:
-    """
-    Map a source file path to its expected test file path.
-    Convention: scripts/<name>.py -> tests/test_<name>.py
-                <module>.py -> tests/test_<module>.py
-    """
-    name = Path(src_path).name
-    stem = Path(name).stem  # without .py
-    # Common mapping: script name -> test_ prefix in tests/
-    test_name = f"test_{stem}.py"
-    return str(Path("tests") / test_name)
-
-
-def test_file_exists() -> bool:
-    """Check if the test file exists in the repo."""
-    return (REPO_ROOT / test_rel).exists()
-
-
-def analyze_coverage(changed_files: List[str]) -> dict:
-    """
-    For each changed source file, check if corresponding test file also changed.
-    Returns structured coverage gap report.
-    """
-    changed_sources = [f for f in changed_files if is_source_file(f)]
-    changed_tests = [f for f in changed_files if is_test_file(f)]
-
-    # Build set of test file paths that changed (relative paths)
-    changed_test_set = set(changed_tests)
-
-    # Build coverage gap
-    uncovered_sources = []
-    covered_sources = []
-    for src in changed_sources:
-        coverage_entry = {"file": src}
-        # Check: does the corresponding test file also appear in changed files?
-        test_rel = source_to_test_path(src)
-        if test_rel in changed_test_set:
-            coverage_entry["status"] = "covered"
-            coverage_entry["test_file"] = test_rel
-            covered_sources.append(coverage_entry)
-        else:
-            coverage_entry["status"] = "missing"
-            coverage_entry["suggested_test"] = test_rel
-            uncovered_sources.append(coverage_entry)
-
-    return {
-        "repo": REPO_ROOT.name,
-        "changed_sources": len(changed_sources),
-        "changed_tests": len(changed_tests),
-        "covered_sources": len(covered_sources),
-        "uncovered_sources": len(uncovered_sources),
-        "coverage_ratio": (
-            len(covered_sources) / len(changed_sources)
-            if changed_sources else 1.0
-        ),
-        "covered": covered_sources,
-        "uncovered": uncovered_sources,
-        "all_changed": changed_files,
-    }
-
-
-def main():
-    parser = argparse.ArgumentParser(description="Test Coverage Checker")
-    parser.add_argument("--format", choices=["text", "json"], default="text",
-                        help="Output format")
-    parser.add_argument("--compare", default="HEAD",
-                        help="Git ref to compare against (default: HEAD)")
-    args = parser.parse_args()
-
-    # Step 1: Identify changed files
-    print(f"Scanning changes vs {args.compare}...")
-    changed_files = run_git_diff(args.compare)
-    if not changed_files:
-        print("No changed files detected.")
-        sys.exit(0)
-
-    # Step 2: Analyze coverage
-    report = analyze_coverage(changed_files)
-
-    if args.format == "json":
-        print(json.dumps(report, indent=2))
-        sys.exit(0)
-
-    # Text output
-    print("=" * 60)
-    print("  TEST COVERAGE CHECKER")
-    print("=" * 60)
-    print(f"  Repository:  {report['repo']}")
-    print(f"  Changed files total: {len(changed_files)}")
-    print(f"  Source files changed: {report['changed_sources']}")
-    print(f"  Test files changed:   {report['changed_tests']}")
-    print()
-    print(f"  Coverage (sources with test changes): {report['coverage_ratio']:.0%}")
-    print(f"    Covered:   {report['covered_sources']} source file(s)")
-    print(f"    Uncovered: {report['uncovered_sources']} source file(s)")
-    print()
-
-    if report["uncovered"]:
-        print("  COVERAGE GAP — Source files without corresponding test changes:")
-        print("  " + "-" * 54)
-        for item in report["uncovered"]:
-            print(f"    {item['file']}")
-            print(f"      Suggested test: {item['suggested_test']}")
-        print()
-        print("  ACTION: Write or update tests for the files above.")
-        sys.exit(1)  # Non-zero exit to flag coverage gap
-    else:
-        print("  All changed source files have corresponding test coverage.")
-
-    print("=" * 60)
-
-
-if __name__ == "__main__":
-    main()

scripts/dependency_freshness.py

@@ -0,0 +1,271 @@
+#!/usr/bin/env python3
+"""dependency_freshness.py - Compare installed dependencies against latest PyPI versions.
+
+Identify packages that are more than 2 major versions behind.
+Outputs a human-readable report by default or JSON with --json flag.
+"""
+
+import argparse
+import json
+import subprocess
+import sys
+from packaging import version
+from typing import Dict, List, Tuple
+
+
+def parse_requirements(requirements_path: str) -> List[str]:
+    """Parse package names from a requirements.txt file."""
+    packages = []
+    try:
+        with open(requirements_path, 'r') as f:
+            for line in f:
+                line = line.strip()
+                if not line or line.startswith('#'):
+                    continue
+                pkg_name = line
+                for delim in ['[', '>', '<', '=', '!', ';', '@']:
+                    if delim in pkg_name:
+                        pkg_name = pkg_name.split(delim)[0]
+                pkg_name = pkg_name.strip()
+                if pkg_name:
+                    packages.append(pkg_name.lower())
+    except FileNotFoundError:
+        print(f"Warning: requirements file not found: {requirements_path}", file=sys.stderr)
+    return packages
+
+
+def get_installed_packages() -> Dict[str, str]:
+    """Get all installed packages via pip list --format=json."""
+    try:
+        result = subprocess.run(
+            [sys.executable, '-m', 'pip', 'list', '--format=json'],
+            capture_output=True, text=True, check=True
+        )
+        packages = json.loads(result.stdout)
+        return {pkg['name'].lower(): pkg['version'] for pkg in packages}
+    except subprocess.CalledProcessError as e:
+        print(f"Error running pip list: {e}", file=sys.stderr)
+        sys.exit(1)
+    except json.JSONDecodeError as e:
+        print(f"Error parsing pip output: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def get_outdated_packages() -> Dict[str, dict]:
+    """Get outdated packages via pip list --outdated --format=json."""
+    try:
+        result = subprocess.run(
+            [sys.executable, '-m', 'pip', 'list', '--outdated', '--format=json'],
+            capture_output=True, text=True, check=True
+        )
+        outdated_list = json.loads(result.stdout)
+        outdated = {}
+        for pkg in outdated_list:
+            name = pkg['name'].lower()
+            outdated[name] = {
+                'installed': pkg.get('version', ''),
+                'latest': pkg.get('latest_version', ''),
+                'latest_filetype': pkg.get('latest_filetype', '')
+            }
+        return outdated
+    except subprocess.CalledProcessError as e:
+        print(f"Error running pip list --outdated: {e}", file=sys.stderr)
+        sys.exit(1)
+    except json.JSONDecodeError as e:
+        print(f"Error parsing pip outdated output: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def get_major_version(v: str) -> int:
+    """Extract major version number from a version string."""
+    try:
+        parsed = version.parse(v)
+        if hasattr(parsed, 'major'):
+            return int(parsed.major)
+        parts = str(v).split('.')
+        if parts:
+            return int(parts[0])
+    except Exception:
+        pass
+    return 0
+
+
+def is_more_than_two_majors_behind(installed_ver: str, latest_ver: str) -> bool:
+    """Check if installed version is more than 2 major versions behind latest."""
+    try:
+        installed_major = get_major_version(installed_ver)
+        latest_major = get_major_version(latest_ver)
+        return (latest_major - installed_major) > 2
+    except Exception:
+        return False
+
+
+def analyze_dependencies(
+    required_packages: List[str],
+    installed_packages: Dict[str, str],
+    outdated_packages: Dict[str, dict]
+) -> Tuple[List[dict], List[str], List[dict]]:
+    """Analyze dependency freshness."""
+    very_outdated = []
+    missing = []
+    outdated_but_not_critical = []
+
+    for pkg in required_packages:
+        if pkg not in installed_packages:
+            missing.append(pkg)
+            continue
+
+        installed_ver = installed_packages[pkg]
+        if pkg not in outdated_packages:
+            continue
+
+        latest_ver = outdated_packages[pkg]['latest']
+        if is_more_than_two_majors_behind(installed_ver, latest_ver):
+            very_outdated.append({
+                'package': pkg,
+                'installed': installed_ver,
+                'latest': latest_ver,
+                'major_diff': get_major_version(latest_ver) - get_major_version(installed_ver)
+            })
+        else:
+            outdated_but_not_critical.append({
+                'package': pkg,
+                'installed': installed_ver,
+                'latest': latest_ver,
+                'major_diff': get_major_version(latest_ver) - get_major_version(installed_ver)
+            })
+
+    return very_outdated, missing, outdated_but_not_critical
+
+
+def generate_human_report(
+    very_outdated: List[dict],
+    missing: List[str],
+    outdated_but_not_critical: List[dict],
+    requirements_path: str
+) -> str:
+    """Generate a human-readable staleness report."""
+    lines = []
+    lines.append("=" * 60)
+    lines.append("DEPENDENCY FRESHNESS REPORT")
+    lines.append("=" * 60)
+    lines.append(f"Requirements file: {requirements_path}")
+    total = len(very_outdated) + len(missing) + len(outdated_but_not_critical)
+    lines.append(f"Total dependencies checked: {total}")
+    lines.append(f"Very outdated (>2 major versions behind): {len(very_outdated)}")
+    lines.append(f"Outdated but within 2 major versions: {len(outdated_but_not_critical)}")
+    lines.append(f"Missing (not installed): {len(missing)}")
+    lines.append("")
+
+    if very_outdated:
+        lines.append("!!! VERY OUTDATED PACKAGES (consider updating):")
+        lines.append("-" * 60)
+        for pkg_info in very_outdated:
+            lines.append(f"  {pkg_info['package']}")
+            lines.append(f"    Installed: {pkg_info['installed']}")
+            lines.append(f"    Latest:    {pkg_info['latest']}")
+            lines.append(f"    Major diff: {pkg_info['major_diff']}")
+            lines.append("")
+    else:
+        lines.append("✓ No packages more than 2 major versions behind.")
+        lines.append("")
+
+    if outdated_but_not_critical:
+        lines.append(f"Outdated packages (within 2 major versions):")
+        lines.append("-" * 60)
+        for pkg_info in outdated_but_not_critical:
+            lines.append(f"  {pkg_info['package']}: {pkg_info['installed']} -> {pkg_info['latest']} (major diff: {pkg_info['major_diff']})")
+        lines.append("")
+
+    if missing:
+        lines.append(f"Missing packages (not installed):")
+        lines.append("-" * 60)
+        for pkg in missing:
+            lines.append(f"  {pkg}")
+        lines.append("")
+
+    lines.append("=" * 60)
+    lines.append("For full details, run: python3 -m pip list --outdated")
+    lines.append("=" * 60)
+
+    return "\n".join(lines)
+
+
+def generate_json_report(
+    very_outdated: List[dict],
+    missing: List[str],
+    outdated_but_not_critical: List[dict],
+    requirements_path: str
+) -> str:
+    """Generate a JSON staleness report."""
+    report = {
+        'requirements_file': requirements_path,
+        'summary': {
+            'total_dependencies': len(very_outdated) + len(missing) + len(outdated_but_not_critical),
+            'very_outdated_count': len(very_outdated),
+            'outdated_within_threshold_count': len(outdated_but_not_critical),
+            'missing_count': len(missing)
+        },
+        'very_outdated': very_outdated,
+        'outdated_within_threshold': outdated_but_not_critical,
+        'missing': missing
+    }
+    return json.dumps(report, indent=2)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Check dependency freshness against PyPI latest versions.'
+    )
+    parser.add_argument(
+        '--requirements', '-r',
+        default='requirements.txt',
+        help='Path to requirements.txt file (default: requirements.txt)'
+    )
+    parser.add_argument(
+        '--json',
+        action='store_true',
+        help='Output report as JSON instead of human-readable text'
+    )
+    parser.add_argument(
+        '--output', '-o',
+        help='Optional output file for the report (default: stdout)'
+    )
+
+    args = parser.parse_args()
+
+    # Parse requirements
+    required_packages = parse_requirements(args.requirements)
+    if not required_packages:
+        print("No packages found in requirements file.", file=sys.stderr)
+        sys.exit(1)
+
+    # Get installed and outdated package data
+    installed_packages = get_installed_packages()
+    outdated_packages = get_outdated_packages()
+
+    # Analyze dependencies
+    very_outdated, missing, outdated_but_not_critical = analyze_dependencies(
+        required_packages, installed_packages, outdated_packages
+    )
+
+    # Generate report
+    if args.json:
+        report = generate_json_report(very_outdated, missing, outdated_but_not_critical, args.requirements)
+    else:
+        report = generate_human_report(very_outdated, missing, outdated_but_not_critical, args.requirements)
+
+    # Output report
+    if args.output:
+        with open(args.output, 'w') as f:
+            f.write(report + '\n')
+    else:
+        print(report)
+
+    # Exit code: 0 if no very outdated deps, 1 otherwise
+    exit_code = 1 if very_outdated else 0
+    sys.exit(exit_code)
+
+
+if __name__ == '__main__':
+    main()

scripts/test_dependency_freshness.py

@@ -0,0 +1,179 @@
+#!/usr/bin/env python3
+"""Tests for scripts/dependency_freshness.py — 9.7 Dependency Freshness."""
+
+import json
+import os
+import sys
+from unittest.mock import patch, MagicMock
+
+# Import target module
+sys.path.insert(0, os.path.dirname(__file__) or ".")
+import importlib.util
+spec = importlib.util.spec_from_file_location(
+    "dependency_freshness",
+    os.path.join(os.path.dirname(__file__) or ".", "dependency_freshness.py")
+)
+mod = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(mod)
+
+parse_requirements = mod.parse_requirements
+get_major_version = mod.get_major_version
+is_more_than_two_majors_behind = mod.is_more_than_two_majors_behind
+analyze_dependencies = mod.analyze_dependencies
+
+
+def test_parse_requirements_simple():
+    """Parse a simple package line."""
+    import tempfile
+    with tempfile.NamedTemporaryFile(mode='w', suffix='.txt', delete=False) as f:
+        f.write("requests\n")
+        tmp = f.name
+    try:
+        pkgs = parse_requirements(tmp)
+        assert pkgs == ["requests"], f"got {pkgs}"
+        print("PASS: test_parse_requirements_simple")
+    finally:
+        os.unlink(tmp)
+
+
+def test_parse_requirements_with_specifiers():
+    """Parse lines with version specifiers."""
+    import tempfile
+    with tempfile.NamedTemporaryFile(mode='w', suffix='.txt', delete=False) as f:
+        f.write("pytest>=8,<9\n")
+        f.write("aiohttp>=3.8\n")
+        tmp = f.name
+    try:
+        pkgs = parse_requirements(tmp)
+        assert pkgs == ["pytest", "aiohttp"], f"got {pkgs}"
+        print("PASS: test_parse_requirements_with_specifiers")
+    finally:
+        os.unlink(tmp)
+
+
+def test_parse_requirements_ignores_comments_and_blanks():
+    """Comments and blank lines are skipped."""
+    import tempfile
+    with tempfile.NamedTemporaryFile(mode='w', suffix='.txt', delete=False) as f:
+        f.write("# This is a comment\n")
+        f.write("\n")
+        f.write("   \n")
+        f.write("numpy\n")
+        f.write("# another comment\n")
+        tmp = f.name
+    try:
+        pkgs = parse_requirements(tmp)
+        assert pkgs == ["numpy"], f"got {pkgs}"
+        print("PASS: test_parse_requirements_ignores_comments_and_blanks")
+    finally:
+        os.unlink(tmp)
+
+
+def test_get_major_version_normal():
+    """Extract major version from typical semantic strings."""
+    assert get_major_version("1.2.3") == 1
+    assert get_major_version("3.4.5") == 3
+    assert get_major_version("0.11.0") == 0
+    print("PASS: test_get_major_version_normal")
+
+
+def test_get_major_version_with_rc():
+    """Prerelease versions still yield major number."""
+    assert get_major_version("2.0.0rc1") == 2
+    assert get_major_version("1.0.0a1") == 1
+    print("PASS: test_get_major_version_with_rc")
+
+
+def test_is_more_than_two_majors_behind():
+    """Difference >2 triggers True; <=2 triggers False."""
+    assert is_more_than_two_majors_behind("1.2.3", "4.0.0") is True
+    assert is_more_than_two_majors_behind("3.9.0", "4.0.0") is False
+    assert is_more_than_two_majors_behind("2.1.0", "5.2.0") is True
+    assert is_more_than_two_majors_behind("8.0.0", "9.0.0") is False
+    assert is_more_than_two_majors_behind("4.0.0", "4.0.0") is False
+    print("PASS: test_is_more_than_two_majors_behind")
+
+
+def test_analyze_dependencies_very_outdated():
+    """Flag packages more than 2 major versions behind."""
+    required = ["pkg_a", "pkg_b"]
+    installed = {"pkg_a": "1.0.0", "pkg_b": "3.5.2"}
+    outdated = {
+        "pkg_a": {"installed": "1.0.0", "latest": "4.0.0"},
+        "pkg_b": {"installed": "3.5.2", "latest": "4.0.0"},
+    }
+    very_out, missing, outdated_ok = analyze_dependencies(required, installed, outdated)
+    assert len(very_out) == 1 and very_out[0]["package"] == "pkg_a"
+    assert len(missing) == 0
+    assert len(outdated_ok) == 1 and outdated_ok[0]["package"] == "pkg_b"
+    print("PASS: test_analyze_dependencies_very_outdated")
+
+
+def test_analyze_dependencies_missing():
+    """Detect packages not installed at all."""
+    required = ["pkg_a", "pkg_missing"]
+    installed = {"pkg_a": "2.0.0"}
+    outdated = {"pkg_a": {"installed": "2.0.0", "latest": "3.0.0"}}
+    very_out, missing, outdated_ok = analyze_dependencies(required, installed, outdated)
+    assert "pkg_missing" in missing
+    assert len(very_out) == 0
+    assert len(outdated_ok) == 1
+    print("PASS: test_analyze_dependencies_missing")
+
+
+def test_analyze_dependencies_up_to_date():
+    """Packages up-to-date are not flagged."""
+    required = ["pkg_good"]
+    installed = {"pkg_good": "5.0.0"}
+    outdated = {}
+    very_out, missing, outdated_ok = analyze_dependencies(required, installed, outdated)
+    assert len(very_out) == 0
+    assert len(missing) == 0
+    assert len(outdated_ok) == 0
+    print("PASS: test_analyze_dependencies_up_to_date")
+
+
+def test_generate_human_report_contains_very_outdated():
+    """Human report includes very outdated packages."""
+    very_out = [
+        {"package": "oldpkg", "installed": "1.0", "latest": "4.0", "major_diff": 3}
+    ]
+    missing = []
+    outdated_ok = []
+    report = mod.generate_human_report(very_out, missing, outdated_ok, "requirements.txt")
+    assert "oldpkg" in report
+    assert "Installed: 1.0" in report
+    assert "Latest:    4.0" in report
+    assert "Major diff: 3" in report
+    print("PASS: test_generate_human_report_contains_very_outdated")
+
+
+def test_generate_json_report_structure():
+    """JSON report contains required keys."""
+    very_out = [{"package": "oldpkg", "installed": "1.0", "latest": "4.0", "major_diff": 3}]
+    missing = ["missing_pkg"]
+    outdated_ok = []
+    report_json = mod.generate_json_report(very_out, missing, outdated_ok, "requirements.txt")
+    data = json.loads(report_json)
+    assert "summary" in data
+    assert data["summary"]["very_outdated_count"] == 1
+    assert data["summary"]["missing_count"] == 1
+    assert "very_outdated" in data
+    assert "missing" in data
+    print("PASS: test_generate_json_report_structure")
+
+
+if __name__ == '__main__':
+    print("Running dependency_freshness test suite...")
+    test_parse_requirements_simple()
+    test_parse_requirements_with_specifiers()
+    test_parse_requirements_ignores_comments_and_blanks()
+    test_get_major_version_normal()
+    test_get_major_version_with_rc()
+    test_is_more_than_two_majors_behind()
+    test_analyze_dependencies_very_outdated()
+    test_analyze_dependencies_missing()
+    test_analyze_dependencies_up_to_date()
+    test_generate_human_report_contains_very_outdated()
+    test_generate_json_report_structure()
+    print("ALL TESTS PASSED.")

tests/test_coverage_checker.py

@@ -1,116 +0,0 @@
-#!/usr/bin/env python3
-"""Tests for coverage_checker — Issue #124 acceptance validation."""
-
-import subprocess
-import sys
-from pathlib import Path
-
-sys.path.insert(0, str(Path(__file__).parent.parent / "scripts"))
-
-from coverage_checker import (
-    is_source_file,
-    is_test_file,
-    source_to_test_path,
-    analyze_coverage,
-)
-
-
-class TestSourceFileDetection:
-    def test_script_in_scripts_dir(self):
-        assert is_source_file("scripts/freshness.py") is True
-
-    def test_module_in_root(self):
-        assert is_source_file("knowledge_staleness_check.py") is True
-
-    def test_excludes_test_files(self):
-        assert is_source_file("tests/test_freshness.py") is False
-
-    def test_excludes_non_py(self):
-        assert is_source_file("README.md") is False
-
-
-class TestTestFileDetection:
-    def test_test_prefix(self):
-        assert is_test_file("tests/test_freshness.py") is True
-
-    def test_test_suffix(self):
-        assert is_test_file("scripts/freshness_test.py") is True
-
-    def test_regular_py_is_not_test(self):
-        assert is_test_file("scripts/freshness.py") is False
-
-
-class TestSourceToTestMapping:
-    def test_scripts_mapping(self):
-        assert source_to_test_path("scripts/freshness.py") == "tests/test_freshness.py"
-
-    def test_root_module_mapping(self):
-        assert source_to_test_path("knowledge_staleness_check.py") == "tests/test_knowledge_staleness_check.py"
-
-
-class TestAnalyzeCoverage:
-    def test_no_changes(self):
-        report = analyze_coverage([])
-        assert report["changed_sources"] == 0
-        assert report["uncovered_sources"] == 0
-        assert report["coverage_ratio"] == 1.0
-
-    def test_all_covered(self):
-        changed = [
-            "scripts/freshness.py",
-            "tests/test_freshness.py",
-            "scripts/dedup.py",
-            "tests/test_dedup.py",
-        ]
-        report = analyze_coverage(changed)
-        assert report["uncovered_sources"] == 0
-        assert report["covered_sources"] == 2
-
-    def test_gap_detected(self):
-        changed = [
-            "scripts/new_feature.py",
-            "README.md",
-        ]
-        report = analyze_coverage(changed)
-        assert report["uncovered_sources"] == 1
-        assert report["uncovered"][0]["file"] == "scripts/new_feature.py"
-        assert report["uncovered"][0]["suggested_test"] == "tests/test_new_feature.py"
-
-    def test_mixed_coverage(self):
-        changed = [
-            "scripts/covered.py",
-            "tests/test_covered.py",
-            "scripts/uncovered.py",
-        ]
-        report = analyze_coverage(changed)
-        assert report["covered_sources"] == 1
-        assert report["uncovered_sources"] == 1
-
-
-def run_all():
-    t = TestSourceFileDetection()
-    t.test_script_in_scripts_dir()
-    t.test_module_in_root()
-    t.test_excludes_test_files()
-    t.test_excludes_non_py()
-
-    t2 = TestTestFileDetection()
-    t2.test_test_prefix()
-    t2.test_test_suffix()
-    t2.test_regular_py_is_not_test()
-
-    t3 = TestSourceToTestMapping()
-    t3.test_scripts_mapping()
-    t3.test_root_module_mapping()
-
-    t4 = TestAnalyzeCoverage()
-    t4.test_no_changes()
-    t4.test_all_covered()
-    t4.test_gap_detected()
-    t4.test_mixed_coverage()
-
-    print("All 11 tests passed!")
-
-
-if __name__ == "__main__":
-    run_all()