Add last() method

Author: sop

lib/CryptoEncoding/PEMBundle.php

@@ -120,6 +120,21 @@ public function first(): PEM
         return $this->_pems[0];
     }
 
+    /**
+     * Get the last PEM in a bundle.
+     *
+     * @throws \LogicException If bundle contains no PEM objects
+     *
+     * @return PEM
+     */
+    public function last(): PEM
+    {
+        if (!count($this->_pems)) {
+            throw new \LogicException('No PEMs.');
+        }
+        return $this->_pems[count($this->_pems) - 1];
+    }
+
     /**
      * @see \Countable::count()
      *

test/unit/PEMBundleTest.php

@@ -41,6 +41,18 @@ public function testAll(PEMBundle $bundle)
     public function testFirst(PEMBundle $bundle)
     {
         $this->assertInstanceOf(PEM::class, $bundle->first());
+        $this->assertEquals($bundle->all()[0], $bundle->first());
+    }
+
+    /**
+     * @depends testBundle
+     *
+     * @param PEMBundle $bundle
+     */
+    public function testLast(PEMBundle $bundle)
+    {
+        $this->assertInstanceOf(PEM::class, $bundle->last());
+        $this->assertEquals($bundle->all()[149], $bundle->last());
     }
 
     /**
@@ -117,6 +129,13 @@ public function testFirstEmptyFail()
         $bundle->first();
     }
 
+    public function testLastEmptyFail()
+    {
+        $bundle = new PEMBundle();
+        $this->expectException(LogicException::class);
+        $bundle->last();
+    }
+
     /**
      * @depends testBundle
      *