cobertura-maven-plugin does not support Java 1.8 properly

[MEZk]

Hello!

I have the following class which uses stream feature from Java 1.8:

import java.util.Arrays;

public class Main {
    public static boolean containsEvenNumbers(int... array) {
        return Arrays.stream(array).anyMatch(number -> isEven(number));
    }

    private static boolean isEven(int number) {
        return number % 2 == 0;
    }

}

I also wrote UT for the class:

import static org.junit.Assert.assertTrue;
import org.junit.Test;

public class MainTest {
    @Test
    public void testContainsEvenNumbers() {
        final int[] array = {1, 2, 3, 4, 5, 6, 7};
        assertTrue(Main.containsEvenNumbers(array));
    }
}

My pom.xml:

<?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>test</groupId>
    <artifactId>com-test</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>cobertura-maven-plugin</artifactId>
                <version>2.7</version>
                <configuration>
                    <check>
                    </check>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>clean</goal>
                            <goal>check</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

When I try to execute the following command:

mvn clean cobertura:cobertura

Cobertura crashes. Stack trace:

[ERROR] net.sourceforge.cobertura.javancss.parser.ParseException: Encountered " ">" "> "" at line 6, column 54.
Was expecting one of:
    "assert" ...
    "boolean" ...
    "byte" ...
    "char" ...
    "double" ...
    "enum" ...
    "false" ...
    "float" ...
    "int" ...
    "long" ...
    "new" ...
    "null" ...
    "short" ...
    "super" ...
    "this" ...
    "true" ...
    "void" ...
    <INTEGER_LITERAL> ...
    <FLOATING_POINT_LITERAL> ...
    <CHARACTER_LITERAL> ...
    <STRING_LITERAL> ...
    <IDENTIFIER> ...
    "(" ...
    "!" ...
    "~" ...
    "++" ...
    "--" ...
    "+" ...
    "-" ...

        at net.sourceforge.cobertura.javancss.parser.JavaParser.generateParseException(JavaParser.java:10490)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.jj_consume_token(JavaParser.java:10366)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.UnaryExpression(JavaParser.java:3175)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.MultiplicativeExpression(JavaParser.java:3090)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AdditiveExpression(JavaParser.java:3085)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ShiftExpression(JavaParser.java:3027)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.RelationalExpression(JavaParser.java:2990)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.InstanceOfExpression(JavaParser.java:2977)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AssigmentExpression(JavaParser.java:2959)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.EqualityExpression(JavaParser.java:2886)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AndExpression(JavaParser.java:2860)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ExclusiveOrExpression(JavaParser.java:2843)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.InclusiveOrExpression(JavaParser.java:2826)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ConditionalAndExpression(JavaParser.java:2808)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ConditionalOrExpression(JavaParser.java:2790)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ConditionalExpression(JavaParser.java:2774)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.Expression(JavaParser.java:2718)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ArgumentList(JavaParser.java:3620)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.Arguments(JavaParser.java:3610)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.PrimarySuffix(JavaParser.java:3511)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.PrimaryExpression(JavaParser.java:3384)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.PostfixExpression(JavaParser.java:3330)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.UnaryExpressionNotPlusMinus(JavaParser.java:3237)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.UnaryExpression(JavaParser.java:3171)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.MultiplicativeExpression(JavaParser.java:3090)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AdditiveExpression(JavaParser.java:3061)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.ShiftExpression(JavaParser.java:3027)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.RelationalExpression(JavaParser.java:2990)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.InstanceOfExpression(JavaParser.java:2977)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AssigmentExpression(JavaParser.java:2959)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.EqualityExpression(JavaParser.java:2886)
        at net.sourceforge.cobertura.javancss.parser.JavaParser.AndExpression(JavaParser.java:2860)

The full stacktrace.txt.

Nevertheless, Cobertura works fine if it is run with the following command:

mvn clean cobertura:check

[hongdili]

"cobertura:cobertura" still generates the coverage report, with the error on lamdas "->" syntax. The report looks fine in my simple case.

[MEZk]

Cobertura also skips classes which have import from java.util.stream package. For example, if the class imports java.util.stream.Stream, Cobertura will not generate coverage report for the class. The problem is also mentioned in #18 where you can find an example project.

[langley-agm]

Also fails when using the "default" keyword in interface methods:

[ERROR] net.sourceforge.cobertura.javancss.parser.ParseException: Encountered " "default" "default "" at line 38, column 5.
Was expecting one of:
    "abstract" ...
    "boolean" ...