Merge pull request #6 from codeliner/feature/path_exists

New method: ArrayReader::pathExists()
codeliner · Jul 11, 2018 · db053de · db053de
2 parents d7b2317 + 2a36abe
commit db053de
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diff --git a/src/ArrayReader.php b/src/ArrayReader.php
@@ -111,6 +111,24 @@ public function mixedValue(string $aPath, $default = null)
         return $value;
     }
 
+    public function pathExists(string $aPath): bool
+    {
+        $pathKeys = $this->toPathKeys($aPath);
+
+        $arrayCopyOrValue = $this->originalArray;
+
+        foreach($pathKeys as $pathKey) {
+
+            if (!array_key_exists($pathKey, $arrayCopyOrValue)) {
+                return false;
+            }
+
+            $arrayCopyOrValue = $arrayCopyOrValue[$pathKey];
+        }
+
+        return true;
+    }
+
     public function toArray(): array
     {
         return $this->originalArray;

diff --git a/tests/ArrayReaderTest.php b/tests/ArrayReaderTest.php
@@ -409,5 +409,26 @@ public function provideForMixedTest()
             ['string']
         ];
     }
+
+    /**
+     * @test
+     * @dataProvider provideForPathExistsTest
+     */
+    public function it_checks_if_path_exists(string $path, array $arrayToCheck, bool $expected)
+    {
+        $reader = new ArrayReader($arrayToCheck);
+
+        $this->assertSame($expected, $reader->pathExists($path));
+    }
+
+    public function provideForPathExistsTest(): array
+    {
+        return [
+            ['test.path', ['test' => ['path' => 'value']], true],
+            ['test.path', ['test' => ['path' => null]], true],
+            ['test.path', ['test' => ['other' => null]], false],
+            ['test', ['test' => ['other' => null]], true],
+        ];
+    }
 }