HermeticByInputOutputPercentage¶

TL;DR — Performs a hermetic test by comparing the the count of a specified input with multiplied by given percentage modifier to the count of a specified output

When to use¶

Sums the configured input counts and output counts, converts the relationship into a percentage, and then checks whether the output total equals the rounded expected percentage of the input total.

The calculation supports multiple input names and multiple output names. When there are zero inputs and zero outputs the effective percentage is treated as zero; when there are zero inputs but some outputs, the comparison fails instead of dividing by zero. InputsAreOutputs lets you compare one output stream against another when the "input" side is itself stored as output data.

YAML configuration¶

Use the hook name in the matching runtime section, then place hook-specific fields under the configuration object shown in the examples below.

Minimal example¶

Sessions:
  - Name: SampleSession

Assertions:
  - Name: HermeticByInputOutputPercentageAssertion
    Assertion: HermeticByInputOutputPercentage
    SessionNames:
      - SampleSession

    AssertionConfiguration:
      InputNames:
        - Published
      OutputNames:
        - Delivered
      ExpectedPercentage: 50
      MidpointRounding: AwayFromZero

Realistic example¶

This configuration says that Delivered should contain exactly half as many items as Published in SampleSession.

The assertion computes the expected output count as 50 percent of the total input count, rounds it with AwayFromZero, and passes only if the real output count matches that rounded number exactly.

Edge cases¶

Missing required configuration keys fail schema validation before the hook runs.
Keep hook names and referenced session or data-source names aligned with the surrounding YAML.