project.setFile(new File(basedir, "file"));

        assertEquals(0, project.getSourceRoots().size());

        project.addSourceRoot(new DefaultSourceRoot(
                ProjectScope.MAIN, Language.JAVA_FAMILY, Path.of(basedir.getAbsolutePath(), "src/main/java")));

        assertEquals(1, project.getSourceRoots().size());

        // Try to remove a different directory

        artifactManager.setPath(artifact, path);
    }

    @Nonnull
    @Override
    public Collection<SourceRoot> getSourceRoots(@Nonnull Project project) {
        MavenProject prj = getMavenProject(requireNonNull(project, "project" + " cannot be null"));
        return prj.getSourceRoots();
    }

    @Nonnull
    @Override

    // ----------------------------------------------------------------------

    /**
     * Adds the given source if not already present.
     *
     * @param source the source to add
     *
     * @see #getSourceRoots()
     *
     * @since 4.0.0
     */
    public void addSourceRoot(SourceRoot source) {
        sources.add(source);
    }

    /**