assertTrue(xmlOutput.contains("<dependency>"), "Should contain dependency element");
        assertTrue(xmlOutput.contains("<groupId>org.junit.jupiter</groupId>"), "Should contain groupId");
        assertTrue(xmlOutput.contains("<artifactId>junit-jupiter</artifactId>"), "Should contain artifactId");
        assertTrue(xmlOutput.contains("<version>5.9.0</version>"), "Should contain version");

        // Verify both includes are present
        assertEquals(2, resource.getIncludes().size(), "Should have two includes");
        assertTrue(resource.getIncludes().contains("*.xml"), "Should contain *.xml");
        assertTrue(resource.getIncludes().contains("*.properties"), "Should contain *.properties");

        // Verify persistence
        Resource resourceAfter = project.getResources().get(0);

                "Expected " + cProjects + " to contain " + ProjectDependencyGraphStub.C);
        assertTrue(
                cProjects.contains(ProjectDependencyGraphStub.B),
                "Expected " + cProjects + " to contain " + ProjectDependencyGraphStub.B);
    }

        assertTrue(
                message.contains("3 problems were encountered while processing the POMs (2 errors)"),
                "Message should contain problem count and error count");

        assertTrue(message.contains("[com.example:project1:1.0]"), "Message should contain project1 identifier");

        assertTrue(message.contains("[com.example:project2:1.0]"), "Message should contain project2 identifier");

        assertTrue(

        // Test toString
        String toString = request1.toString();
        assertTrue(toString.contains("coordinates="), "Expected " + toString + " to contain " + "coordinates=");
        assertTrue(toString.contains("repositories="), "Expected " + toString + " to contain " + "repositories=");
    }

    @Test
    void testRequestTraceIntegration() {
        Session session = mock(Session.class);

     * and that the expecption message contains the expected and actual <abbr>GAV</abbr>.
     *
     * @param expectedGAV the actual <abbr>GAV</abbr> that the exception message should contain
     * @param actualGAV the actual <abbr>GAV</abbr> that the exception message should contain
     */
    private void assertExceptionMessageContains(String expectedGAV, String actualGAV) {

        assertEquals(3, selectors.size());
        assertTrue(selectors.contains(":module-a"), "Expected selectors " + selectors + " to contain :module-a");
        assertTrue(selectors.contains(":module-b"), "Expected selectors " + selectors + " to contain :module-b");
        assertTrue(selectors.contains(":module-c"), "Expected selectors " + selectors + " to contain :module-c");
    }

    @Test

        // the order of these two is non-deterministic, based on when they're added to the reactor.
        assertTrue(projects.contains(pluginProject), "Expected " + projects + " to contain " + pluginProject);
        assertTrue(
                projects.contains(pluginLevelDepProject),
                "Expected " + projects + " to contain " + pluginLevelDepProject);

        assertEquals(1, merged.getContributors().size(), "Expected exactly 1 contributor");
        assertTrue(
                merged.getContributors().contains(contributor),
                "Expected contributors to contain " + contributor + " but was " + merged.getContributors());
    }

    @Test
    void mergeSameDependencies() {
        Dependency dependency = Dependency.newBuilder()

            assertEquals(2, merged.modifiedPoms().size(), "Should merge modified POMs");
            assertTrue(merged.processedPoms().contains(pom1), "Should contain overlapping POM");
            assertTrue(merged.processedPoms().contains(pom2), "Should contain all POMs");
        }

        @Test
        @DisplayName("should handle merging success and failure results")