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PluginAndPlay-AmsterdamJUG.pptx
- 1. Plugin and Play PLUGINSTHAT SUPPORT THE FULL SPECTRUM OF KOTLIN FEATURES 17-5-2022 by Simone de Gijt
- 2. Introduction Simone de Gijt 2016 2017 2018 2019 2020 2021 … -Kotlin 1.0 released - Started working in IT Google announces that Kotlin is the preferred language of Android app developers - Signs contract @ OpenValue - Starts working with Kotlin Twitter: @de_gijt
- 3. What to expect? Kover Code covarage Options Advantages / Disadvantages Demo of usages / configuration Ktlint Linter Options Adventages / Disadvantages Demo of usages / configuration Detekt Code smells Options Adventages / Disadvantages Demo of usages / configuration Twitter: @de_gijt
- 4. Kover {kof· fer} Kover -Gradle plugin for Kotlin code coverage agents: IntelliJ and JaCoCo. Twitter: @de_gijt
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- 6. Options JaCoCo Existing tool Well-knownand widely recognized format Has some quirks regarding Kotlin Twitter: @de_gijt IntelliJ IDEA Available in IntelliJ IDEA Handles Kotlin well Only available in IntelliJ IDEA
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- 9. Advantages Kover Providedby JetBrains Fully integrated with the Gradle toolchain and multiplatform projects. Kotlin Android support without the need to divide into build types and flavours Customizable filters for instrumented classes Handles specific Kotlin features Inline functions Directory structure … Twitter: @de_gijt
- 10. Disadvantages Still inan experimental state Only available for Gradle (not Maven) Engine Jacoco doesn’t support Kotlin Directory Structure Verification is only on LINE-level Twitter: @de_gijt
- 11.
- 12. Ktlint {kitty· lint} Ktlint -An anti-bikeshedding Kotlin linter with built-in formatter Twitter: @de_gijt
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- 14. Advantages It savestime! It saves energy It simplifies your process Twitter: @de_gijt
- 15. Plugin options JLLeitschuh: Gradle wrapper over the pinterest project Adds special tasks Twitter: @de_gijt Pinterest: Static code analysis tool that is used to analyse the Kotlin code for you. Follows the official Kotlin code style GantSign: Maven wrapper over the pinterest project
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- 17. Detekt {de· tect} Detekt -A static code analysis tool for the Kotlin programming language. Twitter: @de_gijt
- 18.
- 19. Options Sonarqube Verynice reports that integrate with Gitlab You get a lot of extra’s.. Community and paid versions Megalinter Free Not Kotlin specific Twitter: @de_gijt
- 20. Advantages Highly configurablerule sets Specification of quality gates which will break your build Gradle plugin for code analysis via Gradle builds SonarQube & IntelliJ integraitons Third party integrations for Maven, Bazel and Github Actions (Docker based and Javascript based) Twitter: @de_gijt
- 21. Disadvantages Ktlint doesn’twork optimal inside Detekt. Better to use it next to Detekt. Doesn’t support other languages. Twitter: @de_gijt
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- 23. Sources Kover –The Code Coverage Plugin https://kotlinlang.org/docs/multiplatform.html https://www.geeksforgeeks.org/code-formatting-in-kotlin-using-ktlint/ https://blog.mindorks.com/code-formatting-in-kotlin-using-ktlint https://github.com/Kotlin/kotlinx-kover https://github.com/JLLeitschuh/ktlint-gradle https://github.com/pinterest/ktlint https://github.com/gantsign/ktlint-maven-plugin https://github.com/detekt/detekt https://megalinter.github.io/latest/installation/ Twitter: @de_gijt
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- 25. Contact Twitter: @de_gijt LinkedIn: Simone de Gijt Twitter:@de_gijt Slideshare:
Editor's Notes
- #3 ~
- #5 László Kövér is a Hungarian politician and the current speaker of the National Assembly of Hungary. Kover is pronounced the same as the Dutch word for suitcase. https://github.com/Kotlin/kotlinx-kover
- #7 Source: Kover – The Code Coverage Plugin https://www.youtube.com/watch?v=jNu5LY9HIbw
- #10 Sources: Kover – The Code Coverage Plugin https://www.youtube.com/watch?v=jNu5LY9HIbw https://github.com/Kotlin/kotlinx-kover https://kotlinlang.org/docs/multiplatform.html
- #12 Demo: Start with JaCoCo Show you can not see the class in the report (because of directory structure) Show inline function is not ”covered” Show IntelliJ Add Kover to the plugins Run report Open as HTML and show that you now can see the class-file including the coverage of the inline function Show that test classes are also tested by default Unmute integrationtests -> no additional config like with jacoco Standard: test is without Kover -> add config Show that you can exclude classes from Kover (both extension + report) Show kover config koverVerify Maybe subprojects (merged reports)
- #15 Source: https://www.geeksforgeeks.org/code-formatting-in-kotlin-using-ktlint/
- #16 Sources https://blog.mindorks.com/code-formatting-in-kotlin-using-ktlint https://github.com/JLLeitschuh/ktlint-gradle https://github.com/pinterest/ktlint https://github.com/gantsign/ktlint-maven-plugin https://megalinter.github.io/latest/installation/ JLLeitschuh: The plugin can be applied to any project, but only activates if that project has the kotlin plugin applied Check tasks support change files to be checked incrementally. On the first run, the task will check all files in the source set, on subsequent runs it will check only added/modified files. IntelliJ IDEA: recommended to work with the ktlint install from brew
- #17 Demo: Basic project without a lint; show format-error in service -> build -> no issues Add ktlint (normal plugin) to project: show all new tasks Show that if you only want intellij idea tasks you can add -idea in the plugin: build, after ktlintCheck 2 options: Create baseline: ktlintGenerateBaseline Format via: ktlintFormat / option+command+l Git integration: addKtlintCheckGitPreCommitHook addKtlintFormatGitPreCommitHook Add plugin Nick Badal Actions on save Additional config file: Without editorconfig file or ktlint plugin the rules of preferences are applied (KOTLIN) You can overwrite this by the editorconfig file (no extra config needed) Source: https://medium.com/@vanniktech/writing-your-first-ktlint-rule-5a1707f4ca5b
- #19 ComplexCondition
- #23 Demo: Basic project without a lint; show format-error in service -> build -> no issues Add ktlint (normal plugin) to project: show all new tasks Show that if you only want intellij idea tasks you can add -idea in the plugin: build, after ktlintCheck 2 options: Create baseline: ktlintGenerateBaseline Format via: ktlintFormat / option+command+l Git integration: addKtlintCheckGitPreCommitHook addKtlintFormatGitPreCommitHook Add plugin Nick Badal Actions on save Additional config file: Without editorconfig file or ktlint plugin the rules of preferences are applied (KOTLIN) You can overwrite this by the editorconfig file (no extra config needed) Source: https://medium.com/@vanniktech/writing-your-first-ktlint-rule-5a1707f4ca5b