testcontainers/testcontainers-java

Add getMappedPort(Integer originalPort, InternetProtocol protocol)

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#554 opened on Jan 23, 2018

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 (11 comments) (0 reactions) (0 assignees)Java (7,535 stars) (1,588 forks)batch import
good first issueresolution/acknowledgedtype/feature

Description

It will just look so much nicer in my test than

genericContainer.getContainerInfo().getNetworkSettings().getPorts().getBindings().get(new ExposedPort(originalPort, protocol))[0].getHostPortSpec()

I think it has something to do with the law of demeter.

But in all fairness root cause is https://github.com/moby/moby/issues/4635

Contributor guide

Tech stack
javadocker
Domain
testingdeveloper experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
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
JavaTestcontainers API basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Examine the existing GenericContainer class to understand the current port mapping API (e.g., getMappedPort method). Look at the exposed port classes in ContainerInfo and NetworkSettings. Implement a helper method getMappedPort(Integer originalPort, InternetProtocol protocol) that extracts the host port from the binding. Add unit tests following existing patterns, referencing the moby issue for context.