Try global switch for unordered collection

Unfortunately it doesn't work.

xmlunit/xmlunit#111 (comment)

src/test/java/learningtest/org/xmlunit/diff/DiffTests.java

@@ -1,12 +1,15 @@
 package learningtest.org.xmlunit.diff;
 
+import org.junit.Ignore;
 import org.junit.Test;
 import org.xmlunit.builder.DiffBuilder;
 import org.xmlunit.builder.Input;
 import org.xmlunit.diff.ComparisonResult;
+import org.xmlunit.diff.ComparisonType;
 import org.xmlunit.diff.DefaultNodeMatcher;
 import org.xmlunit.diff.Diff;
 import org.xmlunit.diff.Difference;
+import org.xmlunit.diff.DifferenceEvaluators;
 import org.xmlunit.diff.ElementSelectors;
 
 import java.util.HashSet;
@@ -25,7 +28,7 @@ public void getDifferencesWhenIdenticalShouldHaveNoDifference() {
 				.withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))
 				.checkForSimilar()
 				.build();
-		assertThat(diff.getDifferences().iterator().hasNext()).isFalse();
+		assertThat(diff.hasDifferences()).isFalse();
 	}
 
 	@Test
@@ -56,7 +59,7 @@ public void getDifferencesWhenDifferentPropertyOrderShouldHaveNoDifference() {
 				.withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))
 				.checkForSimilar()
 				.build();
-		assertThat(diff.getDifferences().iterator().hasNext()).isFalse();
+		assertThat(diff.hasDifferences()).isFalse();
 	}
 
 	@Test
@@ -72,7 +75,7 @@ public void getDifferencesWhenDifferentlyOrderedCollectionShouldHaveNoDifference
 				.build();
 
 		// FIXME: Expected with unordered collection.
-//		assertThat(diff.getDifferences().iterator().hasNext()).isFalse();
+//		assertThat(diff.hasDifferences()).isFalse();
 
 		Set<ComparisonResult> comparisonResults = new HashSet<>();
 		for (Difference difference : diff.getDifferences()) {
@@ -81,4 +84,24 @@ public void getDifferencesWhenDifferentlyOrderedCollectionShouldHaveNoDifference
 		assertThat(comparisonResults).containsExactly(ComparisonResult.DIFFERENT);
 	}
 
+	// FIXME: See https://github.com/xmlunit/xmlunit/issues/111#issuecomment-368859900
+	// This doesn't work.
+	@Ignore
+	@Test
+	public void getDifferencesWhenDifferentlyOrderedCollectionShouldHaveNoDifferenceWithGlobalUnordered() {
+		String xml1 = "<persons><person><id>1</id><name>Johnny</name></person><person><id>2</id><name>John</name></person></persons>";
+		String xml2 = "<persons><person><id>2</id><name>John</name></person><person><id>1</id><name>Johnny</name></person></persons>";
+
+		Diff diff = DiffBuilder.compare(Input.fromString(xml1))
+				.withTest(Input.fromString(xml2))
+				.withNodeMatcher(new DefaultNodeMatcher(ElementSelectors.byNameAndText))
+				.withDifferenceEvaluator(
+						DifferenceEvaluators.chain(
+								DifferenceEvaluators.Default,
+								DifferenceEvaluators.downgradeDifferencesToSimilar(ComparisonType.CHILD_NODELIST_SEQUENCE)))
+				.checkForSimilar()
+				.build();
+		assertThat(diff.hasDifferences()).isFalse();
+	}
+
 }