apache/beam

Increase unit testing coverage in the harness package

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#21,386 opened on Jun 4, 2022

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Description

Increase unit testing coverage in the harness package

We want code coverage at or above 50%, it is currently at 43%.

There are a number of tests already present for this package, most of this task is finding the gaps in code coverage and writing test cases for them.

Imported from Jira BEAM-13902. Original Jira may contain additional context. Reported by: jrmccluskey. Subtask of issue #21383

Contributor guide

Tech stack
go
Domain
testing
Issue type
test
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Go programmingUnit testing fundamentalsFamiliarity with Apache Beam harness logic
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Focus on the harness package at sdks/go/pkg/beam/core/runtime/harness. Review existing tests to identify untested functions or branches. Use Go's coverage tool to measure current coverage. Write test cases for uncovered lines, aiming to increase coverage from 43% to at least 50%. Consider edge cases for handling runtime events and state management.