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5.3Presenting Test Coverage, Risk Areas, and Quality Trends

Test Coverage Visualization

Present coverage in terms stakeholders understand -- not lines of code, but features and user journeys.

FEATURE COVERAGE -- Sprint 47

User Registration     ████████████████████ 100%  (automated)
Login / Auth          ████████████████████ 100%  (automated)
Product Search        ████████████████░░░░  80%  (sort/filter gaps)
Shopping Cart         ████████████████████ 100%  (automated)
Checkout              ██████████████████░░  90%  (edge cases pending)
Order History         ████████████████████ 100%  (automated)
Partner API           ████████████░░░░░░░░  60%  (fault handling gaps)
Admin Dashboard       ████████░░░░░░░░░░░░  40%  (new, in progress)

This visualization tells stakeholders exactly where the safety net is strong and where the gaps are, without requiring them to understand code coverage tools.

Risk Heat Map

A risk heat map combines likelihood and impact to show where attention is needed:

              Low Impact    Medium Impact    High Impact
           ┌─────────────┬───────────────┬──────────────┐
High       │             │ Admin perf.   │ Partner API  │
Likelihood │             │               │ timeouts     │
           ├─────────────┼───────────────┼──────────────┤
Medium     │ Tooltip     │ Search sort   │ Checkout     │
Likelihood │ formatting  │ edge cases    │ saved cards  │
           ├─────────────┼───────────────┼──────────────┤
Low        │ IE11        │ Timezone      │              │
Likelihood │ rendering   │ display       │              │
           └─────────────┴───────────────┴──────────────┘

The top-right corner gets attention. The bottom-left does not. This is exactly how executives think about risk.

Quality Trend Charts

Sprint-over-sprint trends are more valuable than point-in-time snapshots because they show direction.

Metrics to trend:

Bugs found per sprint -- is the product getting more or less buggy?
Escaped defects -- are fewer bugs reaching production over time?
Automation coverage -- is the safety net growing?
Test execution time -- is the feedback loop getting faster or slower?
Flaky test rate -- is the test suite becoming more or less reliable?

Example trend narrative:

"Over the last 6 sprints, our escaped defect rate dropped from 12% to 4%. This correlates with two changes: we added automated smoke tests for the checkout flow in Sprint 43, and we started three amigos sessions in Sprint 44. The investment in shift-left practices is measurably reducing production incidents."