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mirkoalicastromirkoalicastro
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Restructures multi-module project
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‎README.md‎

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# maven-test-impact-plugin
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**Run only the tests that matter.**
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![Selective Test Runner](docs/images/logo.png)
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A Maven plugin that tracks which production classes each test touches at the bytecode level, then uses Git to detect what changed and runs only the affected tests. Zero annotations. Zero config changes to your tests. Just add the plugin and watch your feedback loop shrink.
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mvn clean verify
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```
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This produces two artifacts:
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This produces three artifacts:
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- `selective-test-runner-core-1.0.0-SNAPSHOT.jar`: build-tool-agnostic core (agent, change detection, impact resolution, coverage persistence)
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- `selective-test-runner-core-1.0.0-SNAPSHOT-agent.jar`: the shaded agent JAR (ASM relocated) used as `-javaagent` in the forked Surefire JVM
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- `maven-test-impact-plugin-1.0.0-SNAPSHOT.jar`: the Maven plugin
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- `maven-test-impact-plugin-1.0.0-SNAPSHOT-agent.jar`: the shaded agent JAR (ASM relocated) used as `-javaagent` in the forked Surefire JVM
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## Contributing
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### Project structure
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```
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src/main/java/io/github/testimpact/
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selective-test-runner-core/ # Build-tool-agnostic core
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agent/ # Java agent: instrumentation, coverage recording
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change/ # Git change detection, source-to-class resolution
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store/ # Coverage map persistence (JSON)
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resolve/ # Impact analysis, test selection logic
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mojo/ # Maven plugin goals (collect, select, report, invalidate)
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report/ # JSON + console report generation
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common/ # Shared utilities (reactor scope, paths, dump reader)
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common/ # Shared utilities (paths, dump reader)
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maven-test-impact-plugin/ # Maven plugin (thin wrapper over core)
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mojo/ # Maven plugin goals (collect, select, report, invalidate)
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common/ # Maven-specific utilities (reactor scope)
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```
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### Areas where help is appreciated

‎docs/images/logo.png‎

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‎maven-test-impact-plugin/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
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http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>io.github.testimpact</groupId>
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<artifactId>selective-test-runner</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<artifactId>maven-test-impact-plugin</artifactId>
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<packaging>maven-plugin</packaging>
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<name>Selective Test Runner :: Maven Plugin</name>
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<description>Maven plugin for selective test execution based on bytecode-level impact analysis.</description>
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<dependencies>
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<dependency>
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<groupId>io.github.testimpact</groupId>
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<artifactId>selective-test-runner-core</artifactId>
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</dependency>
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<dependency>
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<groupId>io.github.testimpact</groupId>
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<artifactId>selective-test-runner-core</artifactId>
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<classifier>agent</classifier>
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</dependency>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-plugin-api</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-core</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven.plugin-tools</groupId>
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<artifactId>maven-plugin-annotations</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-plugin-plugin</artifactId>
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<version>${maven.plugin.tools.version}</version>
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<configuration>
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<goalPrefix>test-impact</goalPrefix>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

src/main/java/io/github/testimpact/common/ReactorScope.java renamed to maven-test-impact-plugin/src/main/java/io/github/testimpact/common/ReactorScope.java

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src/main/java/io/github/testimpact/mojo/CollectMojo.java renamed to maven-test-impact-plugin/src/main/java/io/github/testimpact/mojo/CollectMojo.java

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src/main/java/io/github/testimpact/mojo/InvalidateMojo.java renamed to maven-test-impact-plugin/src/main/java/io/github/testimpact/mojo/InvalidateMojo.java

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src/main/java/io/github/testimpact/mojo/ReportMojo.java renamed to maven-test-impact-plugin/src/main/java/io/github/testimpact/mojo/ReportMojo.java

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src/main/java/io/github/testimpact/mojo/SelectMojo.java renamed to maven-test-impact-plugin/src/main/java/io/github/testimpact/mojo/SelectMojo.java

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src/test/java/io/github/testimpact/common/ReactorScopeTest.java renamed to maven-test-impact-plugin/src/test/java/io/github/testimpact/common/ReactorScopeTest.java

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‎pom.xml‎

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<modelVersion>4.0.0</modelVersion>
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<groupId>io.github.testimpact</groupId>
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<artifactId>maven-test-impact-plugin</artifactId>
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<artifactId>selective-test-runner</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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<packaging>maven-plugin</packaging>
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<packaging>pom</packaging>
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<name>maven-test-impact-plugin</name>
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<description>Run only the tests that matter: bytecode-level test impact analysis for Maven.</description>
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<name>Selective Test Runner</name>
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<description>Run only the tests that matter: bytecode-level test impact analysis.</description>
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<modules>
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<module>selective-test-runner-core</module>
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<module>maven-test-impact-plugin</module>
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</modules>
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<properties>
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<maven.compiler.source>11</maven.compiler.source>
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<asm.version>9.6</asm.version>
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<jgit.version>6.10.1.202505221210-r</jgit.version>
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<jackson.version>2.21.3</jackson.version>
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<junit.version>5.10.2</junit.version>
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<maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>
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<maven-shade-plugin.version>3.5.1</maven-shade-plugin.version>
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<maven-surefire-plugin.version>3.2.5</maven-surefire-plugin.version>
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<spotless-maven-plugin.version>3.4.0</spotless-maven-plugin.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-plugin-api</artifactId>
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<version>${maven.plugin.api.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-core</artifactId>
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<version>${maven.api.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.maven.plugin-tools</groupId>
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<artifactId>maven-plugin-annotations</artifactId>
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<version>${maven.plugin.tools.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>org.ow2.asm</groupId>
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<artifactId>asm</artifactId>
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<version>${asm.version}</version>
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</dependency>
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<dependency>
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<groupId>org.ow2.asm</groupId>
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<artifactId>asm-commons</artifactId>
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<version>${asm.version}</version>
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</dependency>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>io.github.testimpact</groupId>
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<artifactId>selective-test-runner-core</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>io.github.testimpact</groupId>
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<artifactId>selective-test-runner-core</artifactId>
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<version>${project.version}</version>
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<classifier>agent</classifier>
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</dependency>
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<dependency>
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<groupId>org.eclipse.jgit</groupId>
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<artifactId>org.eclipse.jgit</artifactId>
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<version>${jgit.version}</version>
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</dependency>
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<dependency>
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<groupId>org.ow2.asm</groupId>
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<artifactId>asm</artifactId>
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<version>${asm.version}</version>
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</dependency>
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<dependency>
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<groupId>org.ow2.asm</groupId>
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<artifactId>asm-commons</artifactId>
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<version>${asm.version}</version>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>${jackson.version}</version>
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</dependency>
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<dependency>
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<groupId>org.eclipse.jgit</groupId>
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<artifactId>org.eclipse.jgit</artifactId>
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<version>${jgit.version}</version>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>5.10.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<version>${jackson.version}</version>
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</dependency>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-plugin-plugin</artifactId>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-plugin-api</artifactId>
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<version>${maven.plugin.api.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.maven</groupId>
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<artifactId>maven-core</artifactId>
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<version>${maven.api.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.maven.plugin-tools</groupId>
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<artifactId>maven-plugin-annotations</artifactId>
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<version>${maven.plugin.tools.version}</version>
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<configuration>
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<goalPrefix>test-impact</goalPrefix>
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</configuration>
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</plugin>
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</dependency>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-jar-plugin</artifactId>
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<version>${maven-jar-plugin.version}</version>
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<configuration>
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<archive>
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<manifestEntries>
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<Premain-Class>io.github.testimpact.agent.CoverageAgent</Premain-Class>
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<Agent-Class>io.github.testimpact.agent.CoverageAgent</Agent-Class>
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<Can-Retransform-Classes>true</Can-Retransform-Classes>
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<Can-Redefine-Classes>true</Can-Redefine-Classes>
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</manifestEntries>
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</archive>
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</configuration>
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</plugin>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<version>${junit.version}</version>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>${maven-shade-plugin.version}</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals><goal>shade</goal></goals>
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<configuration>
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<createDependencyReducedPom>false</createDependencyReducedPom>
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<shadedArtifactAttached>true</shadedArtifactAttached>
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<shadedClassifierName>agent</shadedClassifierName>
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<artifactSet>
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<includes>
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<include>org.ow2.asm:*</include>
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</includes>
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</artifactSet>
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<relocations>
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<relocation>
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<pattern>org.objectweb.asm</pattern>
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<shadedPattern>io.github.testimpact.shaded.asm</shadedPattern>
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</relocation>
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</relocations>
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<transformers>
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<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<manifestEntries>
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<Premain-Class>io.github.testimpact.agent.CoverageAgent</Premain-Class>
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<Agent-Class>io.github.testimpact.agent.CoverageAgent</Agent-Class>
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<Can-Retransform-Classes>true</Can-Retransform-Classes>
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<Can-Redefine-Classes>true</Can-Redefine-Classes>
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</manifestEntries>
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</transformer>
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</transformers>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>${maven-surefire-plugin.version}</version>
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</plugin>
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<plugin>
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<groupId>com.diffplug.spotless</groupId>
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<artifactId>spotless-maven-plugin</artifactId>
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<version>${spotless-maven-plugin.version}</version>
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<configuration>
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<java>
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<googleJavaFormat/>
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</java>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>${maven-surefire-plugin.version}</version>
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</plugin>
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<plugin>
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<groupId>com.diffplug.spotless</groupId>
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<artifactId>spotless-maven-plugin</artifactId>
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<version>${spotless-maven-plugin.version}</version>
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<configuration>
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<java>
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<googleJavaFormat/>
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</java>
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</configuration>
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</plugin>
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</plugins>
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</build>

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