Code Duplication    Length = 8-8 lines in 2 locations

tests/Collection/CollectionTest.php 2 locations

@@ 52-59 (lines=8) @@
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     *
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     * @return void
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     */
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    public function testPop()
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    {
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        $element = $this->collection->pop();
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        $this->assertCount(2, $this->collection);
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        $this->assertFalse($this->collection->contains(3));
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        $this->assertEquals(3, $element);
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    }
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    /**
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     * Test shifting element from collection
@@ 66-73 (lines=8) @@
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     *
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     * @return void
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     */
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    public function testShift()
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    {
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        $element = $this->collection->shift();
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        $this->assertCount(2, $this->collection);
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        $this->assertFalse($this->collection->contains(1));
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        $this->assertEquals(1, $element);
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    }
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    /**
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     * Test un-shifting element onto collection