Migration task testdata

Part of #375

testdata/java/migrate/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>eval.dev.quality</groupId>
+	<artifactId>plain</artifactId>
+	<version>1.0-SNAPSHOT</version>
+
+	<properties>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-engine</artifactId>
+			<version>5.11.3</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit.vintage</groupId>
+			<artifactId>junit-vintage-engine</artifactId>
+			<version>5.11.3</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.openclover</groupId>
+				<artifactId>clover-maven-plugin</artifactId>
+				<version>4.5.2</version>
+				<configuration>
+					<generateHtml>false</generateHtml>
+					<generateJson>false</generateJson>
+					<generatePdf>false</generatePdf>
+					<generateXml>true</generateXml>
+					<includeFailedTestCoverage>true</includeFailedTestCoverage>
+					<showInnerFunctions>true</showInnerFunctions>
+					<showLambdaFunctions>true</showLambdaFunctions>
+					<singleCloverDatabase>true</singleCloverDatabase>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>3.2.5</version>
+			</plugin>
+		</plugins>
+	</build>
+</project>

testdata/java/migrate/repository.json

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+{
+	"tasks": [
+		"migrate"
+	]
+}

testdata/java/migrate/src/main/java/com/eval/Decrement.java

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+package com.eval;
+
+public class Decrement {
+	public static int decrement(int i) {
+		return i - 1;
+	}
+}

testdata/java/migrate/src/main/java/com/eval/Increment.java

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+package com.eval;
+
+public class Increment {
+	public static int increment(int i) {
+		return i + 1;
+	}
+}

testdata/java/migrate/src/test/java/com/eval/DecrementTest.java

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+package com.eval;
+
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class DecrementTest {
+	@Test
+	public void decrement() {
+		int i = 1;
+		int expected = 0;
+		int actual = Decrement.decrement(i);
+
+		assertEquals(expected, actual);
+	}
+}

testdata/java/migrate/src/test/java/com/eval/IncrementTest.java

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+package com.eval;
+
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class IncrementTest {
+	@Test
+	public void increment() {
+		int i = 1;
+		int expected = 2;
+		int actual = Increment.increment(i);
+
+		assertEquals(expected, actual);
+	}
+}