1 files changed, 41 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/includes/dataitems/CommonDataItemTest.php b/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/includes/dataitems/CommonDataItemTest.php
new file mode 100644
index 00000000..20664d3a
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/tests/phpunit/includes/dataitems/CommonDataItemTest.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace SMW\Tests;
+
+/**
+ * @covers \SMWDataItem
+ *
+ * @group SMW
+ * @group SMWExtension
+ *
+ * @license GNU GPL v2+
+ * @since 2.1
+ *
+ * @author mwjames
+ */
+class CommonDataItemTest extends \PHPUnit_Framework_TestCase {
+
+	public function testSerializationToFilterSameStringRepresentation() {
+
+		$items = [];
+
+		foreach ( [ 'Foo', 'Bar', 'Foo' ] as  $value ) {
+
+			$dataItem = $this->getMockBuilder( '\SMWDataItem' )
+				->disableOriginalConstructor()
+				->getMockForAbstractClass();
+
+			$dataItem->expects( $this->any() )
+				->method( 'getSerialization' )
+				->will( $this->returnValue( $value ) );
+
+			$items[] = $dataItem;
+		}
+
+		$this->assertCount(
+			2,
+			array_unique( $items )
+		);
+	}
+
+}