public void testValidationErrorUponNonUniqueDependencyKey()
        throws Exception
    {
        try
        {
            buildPom( "unique-dependency-key/deps" );
            fail( "Non-unique dependency keys did not cause validation error" );
        }
        catch ( ProjectBuildingException e )
        {
            // expected
        }
    }

    @Test

    }

    public static String toRepositoryChecksumPolicy(final String artifactRepositoryPolicy) {
        switch (artifactRepositoryPolicy) {
            case RepositoryPolicy.CHECKSUM_POLICY_FAIL:
                return RepositoryPolicy.CHECKSUM_POLICY_FAIL;
            case RepositoryPolicy.CHECKSUM_POLICY_IGNORE:
                return RepositoryPolicy.CHECKSUM_POLICY_IGNORE;
            case RepositoryPolicy.CHECKSUM_POLICY_WARN:

    void testChecksumVerification() throws Exception {
        ArtifactRepositoryPolicy policy = new ArtifactRepositoryPolicy(
                true, ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS, ArtifactRepositoryPolicy.CHECKSUM_POLICY_FAIL);

        ArtifactRepository repo = artifactRepositoryFactory.createArtifactRepository(
                "id", "string://url", new ArtifactRepositoryLayoutStub(), policy, policy);

            want to analyze the set of transitive dependencies, in particular during early lifecycle phases where
            full dependency resolution might fail due to projects which haven't been built yet.
          </description>
        </field>
        <field>
          <name>dependencyCollection</name>
          <version>2.0.0+</version>
          <type>String</type>

        legacySupport.setSession(session);
    }

    protected abstract String component();

    /**
     * Return an existing file, not a directory - causes creation to fail.
     *
     * @throws Exception
     */
    protected ArtifactRepository badLocalRepository() throws Exception {
        String path = "target/test-repositories/" + component() + "/bad-local-repository";

    // Reactor Failure Mode
    // ----------------------------------------------------------------------

    String REACTOR_FAIL_FAST = "FAIL_FAST";

    String REACTOR_FAIL_AT_END = "FAIL_AT_END";

    String REACTOR_FAIL_NEVER = "FAIL_NEVER";

    // ----------------------------------------------------------------------
    // Reactor Make Mode

            org.apache.maven.api.model.RepositoryPolicy policy) {
        boolean enabled = true;
        String updatePolicy = RepositoryPolicy.UPDATE_POLICY_DAILY;
        String checksumPolicy = RepositoryPolicy.CHECKSUM_POLICY_FAIL;
        if (policy != null) {
            enabled = policy.isEnabled();
            if (policy.getUpdatePolicy() != null) {
                updatePolicy = policy.getUpdatePolicy();
            }

        if (repositoryUrl.contains("${")) {
            // the repository url contains unresolved properties and getting the basedir is not possible
            // in JDK 20+ 'new URL(string)' will fail if the string contains a curly brace
            this.basedir = null;
        } else {
            try {
                URL url = new URL(repository.getUrl());
                if ("file".equals(url.getProtocol())) {

                        BuilderProblem.Severity.WARNING,
                        prefix + ".layout",
                        repository.getId(),
                        "uses the unsupported value 'legacy', artifact resolution might fail.");
            }
        }
    }

    // ----------------------------------------------------------------------
    // Field validation

        <field>
          <name>checksumPolicy</name>
          <version>4.0.0+</version>
          <description>
            What to do when verification of an artifact checksum fails. Valid values are
            {@code ignore},
            {@code fail} (default for Maven 4 and above) or
            {@code warn} (default for Maven 2 and 3).
          </description>
          <type>String</type>
        </field>