under the License.
-->

<!-- START SNIPPET: superpom -->
<project xmlns="http://maven.apache.org/POM/4.1.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.1.0 https://maven.apache.org/xsd/maven-4.1.0.xsd">
  <modelVersion>4.1.0</modelVersion>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

            UpgradeContext context = createMockContext(tempDir, TestUtils.createOptionsWithModelVersion("4.1.0"));
            String result = upgradeGoal.testDoUpgradeLogic(context, "4.1.0");

            assertEquals("4.1.0", result);
        }

        @Test
        @DisplayName("should use 4.1.0 when --all option is specified")
        void shouldUse410WhenAllOptionSpecified() {

        }

        @Test
        @DisplayName("should handle newer than 4.1.0 versions")
        void shouldHandleNewerThan410Versions() {
            assertTrue(ModelVersionUtils.isNewerThan410("4.2.0"));
            assertTrue(ModelVersionUtils.isNewerThan410("5.0.0"));
            assertFalse(ModelVersionUtils.isNewerThan410("4.1.0"));
            assertFalse(ModelVersionUtils.isNewerThan410("4.0.0"));
        }

                    .modelVersion("4.1.0")
                    .parent("com.example", "parent-project", "1.0.0")
                    .artifactId("module-a")
                    .build();

            String moduleBPomXml = """
                <?xml version="1.0" encoding="UTF-8"?>
                <project xmlns="http://maven.apache.org/POM/4.1.0">
                    <parent>

        @Test
        @DisplayName("should fail with error when attempting downgrade from 4.1.0 to 4.0.0")
        void shouldFailWhenAttemptingDowngrade() throws Exception {
            String pomXml = """
                <?xml version="1.0" encoding="UTF-8"?>
                <project xmlns="http://maven.apache.org/POM/4.1.0">
                    <modelVersion>4.1.0</modelVersion>
                    <groupId>com.example</groupId>

            assertTrue(
                    upgradedPom.contains("http://maven.apache.org/POM/4.1.0"),
                    "POM should be upgraded to 4.1.0 namespace");
        }

        @Test
        @DisplayName("should create .mvn directory when upgrading to 4.1.0")
        void shouldCreateMvnDirectoryFor41Upgrade() throws Exception {
            Path pomFile = tempDir.resolve("pom.xml");

    }

    @Test
    void testV4ModelVersion() {
        Model m = model.withModelVersion("4.1.0");
        assertEquals("4.0.0", new MavenModelVersion().getModelVersion(m));
    }

    @Test
    void testV4ModelRoot() {
        Model m = model.withRoot(true);
        assertEquals("4.1.0", new MavenModelVersion().getModelVersion(m));
    }

    @Test
    void testV4ModelPreserveModelVersion() {

        printStream.accept("");
        printStream.accept("Options:");
        printStream.accept("  -m, --model-version <version> Target POM model version (4.0.0 or 4.1.0)");
        printStream.accept("  -d, --directory <path> Directory to use as starting point for POM discovery");
        printStream.accept("  -i, --infer           Remove redundant information that can be inferred by Maven");

 * <ul>
 *   <li><strong>4.0.0 → 4.1.0</strong>: Upgrades Maven 3.x POMs to Maven 4.1.0 format</li>
 * </ul>
 *
 * <h3>4.0.0 → 4.1.0 Upgrade Process</h3>
 * <ol>
 *   <li><strong>Namespace Update</strong>: Changes namespace from Maven 4.0.0 to 4.1.0 for all elements</li>
 *   <li><strong>Schema Location Update</strong>: Updates xsi:schemaLocation to Maven 4.1.0 XSD</li>

 * <pre>{@code
 * mvnup check
 * }</pre>
 *
 * <h3>Apply All Upgrades</h3>
 * <pre>{@code
 * mvnup apply --all
 * }</pre>
 *
 * <h3>Upgrade to Maven 4.1.0 with Inference</h3>
 * <pre>{@code
 * mvnup apply --model 4.1.0 --infer
 * }</pre>
 *
 * <h2>Extension Points</h2>
 *
 * <p>To add new upgrade strategies:</p>
 * <ol>