Defects Leakage per Project

Calculate the percentage of bugs reported by the QA team versus those reported by others using a formula. This report helps track defect leakage, ensuring that no more than the fixed maximum percentage of bugs slip through to production, and highlighting areas where testing coverage can be improved.

Step 1: Add two data sources:

Data Source A: Bugs reported by the QA team
Data Source B: Bugs reported by others

Step 2: Switch from basic metric to Formula and add two parameters:

P1: Number of issues counted from Data Source A
P2: Number of issues counted from Data Source B

Step 3: Add Formula metric name and input formula expression: (P2/(P2+P1))*100

Step 4: Display by ‘Project’ field.

Step 5: Activate Target feature and select Fixed type.

Step 6: Choose Per x-axis item target result and add fixed value. In our sample, it is 8.

Step 7: Specify that exceeding this value is considered Bad.

Step 8: Under More Settings activate a Warning Threshold and customize the target label to “Max”.