package br.com.alura.maven;

public class Produto {

    private final String nome;
    private final double preco;

    public Produto(String nome, double preco) {
        super();
        this.nome = nome;
        this.preco = preco;
    }

    public String getNome() {
        return nome;
    }

    public double getPreco() {
        return preco;
    }

    public double getPrecoComImposto() {
        return preco*1.1;
    }
}

package br.com.alura.maven;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class ProdutoTeste {

    @Test
    public void verificaPrecoComImposto () {
        Produto bala = new Produto("juquinha", 0.1);
        assertEquals(0.11, bala.getPrecoComImposto(), 0.0000001);
    }
}

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>br.com.alura.maven</groupId>
    <artifactId>produtos</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>produtos</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.thoughtworks.xstream</groupId>
            <artifactId>xstream</artifactId>
            <version>1.4.11.1</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-pmd-plugin</artifactId>
                <version>3.12.0</version>
                <executions>
                    <execution>
                        <phase>verify</phase>
                        <goals>
                            <goal>check</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.8.5</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>prepare-agent</goal>
                            <goal>report</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

O relatório sempre sai igual com 0%