Stryker4s Maven plugin

This is the project for the Stryker4s Maven plugin. As you cannot build a Maven plugin from a sbt project, it is a separate project.

Overriding compiler flags

Stryker4s can generate mutated code that produces warnings. This will not work well with -Xfatal-warnings and/or -Werror Scala compiler options. To mitigate this, you can specify a profile where the scala maven plugin uses different set of compiler flags.

    <profile>
        <id>stryker4s</id>
        <build>
            <plugins>
                <plugin>
                    <groupId>net.alchim31.maven</groupId>
                    <artifactId>scala-maven-plugin</artifactId>
                    <configuration>
                        <args combine.children="override">
                            <arg>-language:postfixOps</arg>
                            <arg>-language:higherKinds</arg>
                            <!-- <arg>-Xfatal-warnings</arg> disabling for stryker4s -->
                        </args>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    </profile>

Then you can activate this profile in stryker4s-maven-plugin's configuration section. Or activate a profile from the command-line mvn stryker4s:run -P stryker4s.

    <plugin>
        <groupId>io.stryker-mutator</groupId>
        <artifactId>stryker4s-maven-plugin</artifactId>
        <configuration>
            <project>
                <activeProfiles>
                    <profile>
                        <id>stryker4s</id>
                    </profile>
                </activeProfiles>
            </project>
        </configuration>
    </plugin>

Developing

The maven plugin depends on the stryker4s-core dependency. To install it locally, you can execute the following command in the root of this repository: sbt 'publishM2Local. This will install stryker4s-core_2.13 into your local Maven repository so you can start local development.