Code Duplication    Length = 6-6 lines in 2 locations

Tests/Cache/CachePrivateTest.php 2 locations

@@ 49-54 (lines=6) @@
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    /**
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     * Test exception thrown when array is missing keys.
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     */
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    public function testArrayHasNoKeys(){
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        $this->expectException(InvalidArgumentException::class);
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        $data = ['foo','bar'];
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        $method = $this->getCacheMethod('_hasKeys');
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        $method->invokeArgs($this->cache, [$data]);
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    }
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    /**
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     * Test array contains a failure.
@@ 92-97 (lines=6) @@
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    /**
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     * Test that string is not Traversable
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     */
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    public function testIsNotTraversable(){
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        $this->expectException(InvalidArgumentException::class);
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        $data = 'some-random-string';
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        $method = $this->getCacheMethod('_isTraversable');
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        $method->invokeArgs($this->cache, [$data]);
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    }
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    /**
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     * Test that instance of Iterator is traversable