Merge pull request #709 from wmde/refListTestMutations

Add missing ReferenceList::addReference test case

Author: JeroenDeDauw

src/ReferenceList.php

@@ -100,6 +100,10 @@ public function addNewReference( $snaks = [] /*...*/ ) {
 	 * @param int $index
 	 */
 	private function insertReferenceAtIndex( Reference $reference, $index ) {
+		if ( !is_int( $index ) ) {
+			throw new InvalidArgumentException( '$index must be an integer' );
+		}
+
 		$this->references = array_merge(
 			array_slice( $this->references, 0, $index ),
 			[ spl_object_hash( $reference ) => $reference ],

tests/unit/ReferenceListTest.php

@@ -143,7 +143,7 @@ public function testRemoveReference( ReferenceList $array ) {
 			$array->removeReference( $element );
 
 			$this->assertFalse( $array->hasReference( $element ) );
-			$this->assertEquals( --$elementCount, count( $array ) );
+			$this->assertSame( --$elementCount, count( $array ) );
 		}
 	}
 
@@ -180,13 +180,13 @@ public function testAddReferenceOnEmptyList() {
 	}
 
 	private function assertSameReferenceOrder( ReferenceList $expectedList, ReferenceList $references ) {
-		$this->assertEquals(
+		$this->assertSame(
 			iterator_to_array( $expectedList ),
 			iterator_to_array( $references )
 		);
 	}
 
-	public function testAddReferenceOnNonEmptyList() {
+	public function testAddReferenceAtTheEnd() {
 		$reference1 = new Reference( [ new PropertyNoValueSnak( 1 ) ] );
 		$reference2 = new Reference( [ new PropertyNoValueSnak( 2 ) ] );
 		$reference3 = new Reference( [ new PropertyNoValueSnak( 3 ) ] );
@@ -200,6 +200,18 @@ public function testAddReferenceOnNonEmptyList() {
 		$this->assertSameReferenceOrder( $expectedList, $references );
 	}
 
+	public function testAddReferenceBetweenExistingReferences() {
+		$reference1 = new Reference( [ new PropertyNoValueSnak( 1 ) ] );
+		$reference2 = new Reference( [ new PropertyNoValueSnak( 2 ) ] );
+		$list = new ReferenceList( [ $reference1, $reference2 ] );
+
+		$reference3 = new Reference( [ new PropertyNoValueSnak( 3 ) ] );
+		$list->addReference( $reference3, 1 );
+
+		$this->assertCount( 3, $list );
+		$this->assertSame( 1, $list->indexOf( $reference3 ) );
+	}
+
 	public function testAddReferenceIgnoresIdenticalObjects() {
 		$list = new ReferenceList();
 		$reference = new Reference( [ new PropertyNoValueSnak( 1 ) ] );
@@ -294,7 +306,7 @@ public function testIndexOf( ReferenceList $array ) {
 
 		$i = 0;
 		foreach ( $array as $reference ) {
-			$this->assertEquals( $i++, $array->indexOf( $reference ) );
+			$this->assertSame( $i++, $array->indexOf( $reference ) );
 		}
 	}
 
@@ -329,7 +341,7 @@ public function testGetValueHashReturnsString( ReferenceList $array ) {
 	 */
 	public function testGetValueHashIsTheSameForClone( ReferenceList $array ) {
 		$copy = unserialize( serialize( $array ) );
-		$this->assertEquals( $array->getValueHash(), $copy->getValueHash() );
+		$this->assertSame( $array->getValueHash(), $copy->getValueHash() );
 	}
 
 	/**