This is a ktor test for install method in HttpClient.
First you need to compile this project to jar using mirai/buildPlugin Gradle task, and you will find the built jar in build/mirai folder.
This project is a plugin of Mirai Console. So you will need it to load this plugin. You can download Mirai Console installer here.
After installed, put the built jar in plugins folder and launch mcl.bat, wait for the console fully start. Then type test and enter, you will see the error.