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IntelliJ Plugin with AOSP inserts incorrect blank lines during optimize imports

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#962 3 comments 6 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
tooling

Research direction

Reproduce the issue in the IntelliJ plugin by running Optimize Imports on the AOSP-style Java imports shown in the report, then compare the result with Spotless and the Google Java Style Guide. Trace the plugin's AOSP import-ordering behavior; done means Optimize Imports leaves only the expected blank line while the default GOOGLE style remains unaffected.

Written by the indexing model from the issue text.

Description

IntelliJ

When using the IntelliJ google-java-formatter 1.16.0.2 with the AOSP style, the "Optimize Imports" action results in empty lines between imports with different TLDs.

Given:
// ...
import static org.assertj.core.api.Assertions.assertThat;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.params.ParameterizedTest;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
// ...
Results in:
// ...
import static org.assertj.core.api.Assertions.assertThat;

import lombok.extern.slf4j.Slf4j;

import org.junit.jupiter.params.ParameterizedTest;

import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
// ...
Expected:

When using spotless:check with google-java-formatter 0.16.0 / 0.17.0 and AOSP, it complains that all but the first empty line have to be removed. The online documentation seems to agree with spotless.

The IntelliJ plugin does not break the Google Java Style Guide when executing "optimize imports".

Context

This being inconsistent between spotless and Intellij is very inconvenient. We use use spotless in the CI to enforce the codestyle and this necessitates running mvn spotless:apply for every commit or disabling "optimize imports" which itself results in manual cleanup of unused imports.

I have tried it with the default GOOGLE style and that does not seem to have this problem.

Dominant language
Java
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Merged PRs (30d)
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