jacoco

Check JaCoCo Code Coverage

Run verify to generate coverage reports, then parse and display results.

Minimum threshold: 80% line coverage

Step 1: Generate coverage reports

Specific module (e.g., /jacoco jhelm-core):

./mvnw verify -pl $ARGUMENTS -q

All modules:

./mvnw verify -q

Step 2: Module-level summary

Shows coverage percentage per module with PASS/FAIL status:

python3 -c "
import xml.etree.ElementTree as ET

THRESHOLD = 80
modules = ['jhelm-gotemplate', 'jhelm-core', 'jhelm-cli']
if '$ARGUMENTS':
    modules = ['$ARGUMENTS']

print(f'{'Module':<20} {'Covered':>8} {'Total':>8} {'Coverage':>10} {'Status':>8}')
print('-' * 58)
for module in modules:
    try:
        tree = ET.parse(f'{module}/target/site/jacoco/jacoco.xml')
        root = tree.getroot()
        for counter in root.findall('counter'):
            if counter.get('type') == 'LINE':
                missed = int(counter.get('missed'))
                covered = int(counter.get('covered'))
                total = missed + covered
                pct = covered / total * 100 if total > 0 else 0
                status = 'PASS' if pct >= THRESHOLD else 'FAIL'
                print(f'{module:<20} {covered:>8} {total:>8} {pct:>9.2f}% {status:>8}')
    except FileNotFoundError:
        print(f'{module:<20} {'N/A':>8} {'N/A':>8} {'N/A':>10} {'MISSING':>8}')
"

Step 3: Class-level breakdown (lowest coverage first)

Find classes with lowest coverage to target improvements:

python3 -c "
import xml.etree.ElementTree as ET

module = '$ARGUMENTS' if '$ARGUMENTS' else 'jhelm-gotemplate'
tree = ET.parse(f'{module}/target/site/jacoco/jacoco.xml')
root = tree.getroot()
results = []
for pkg in root.findall('.//package'):
    for cls in pkg.findall('class'):
        for counter in cls.findall('counter'):
            if counter.get('type') == 'LINE':
                missed = int(counter.get('missed'))
                covered = int(counter.get('covered'))
                total = missed + covered
                if total > 0:
                    pct = covered / total * 100
                    results.append((pct, missed, covered, total, cls.get('name')))
results.sort()
print(f'{'Coverage':>10} {'Missed':>8} {'Covered':>8} {'Total':>8}  Class')
print('-' * 80)
for pct, missed, covered, total, name in results:
    print(f'{pct:>9.1f}% {missed:>8} {covered:>8} {total:>8}  {name}')
"