Merge branch 'hotfix/167' into develop

Forward port #167

Conflicts:
	CHANGELOG.md

CHANGELOG.md

@@ -24,7 +24,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 - Nothing.
 
-## 2.8.3 - TBD
+## 2.8.3 - 2018-12-13
 
 ### Added
 
@@ -44,7 +44,8 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- Nothing.
+- [#167](https://github.com/zendframework/zend-inputfilter/pull/167) fixes the combination of marking an `ArrayInput` required, and passing an
+  empty array for validation; it now correctly detects these as invalid.
 
 ## 2.8.2 - 2018-05-14
 

src/ArrayInput.php

@@ -83,6 +83,14 @@ public function isValid($context = null)
         $validator = $this->getValidatorChain();
         $values    = $this->getValue();
         $result    = true;
+
+        if ($required && empty($values)) {
+            if ($this->errorMessage === null) {
+                $this->errorMessage = $this->prepareRequiredValidationFailureMessage();
+            }
+            return false;
+        }
+
         foreach ($values as $value) {
             $empty = ($value === null || $value === '' || $value === []);
             if ($empty && ! $this->isRequired() && ! $this->continueIfEmpty()) {

test/ArrayInputTest.php

@@ -27,6 +27,33 @@ public function testDefaultGetValue()
         $this->assertCount(0, $this->input->getValue());
     }
 
+    public function testArrayInputMarkedRequiredWithoutAFallbackFailsValidationForEmptyArrays()
+    {
+        $input = $this->input;
+        $input->setRequired(true);
+        $input->setValue([]);
+
+        $this->assertFalse($input->isValid());
+        $this->assertRequiredValidationErrorMessage($input);
+    }
+
+    public function testArrayInputMarkedRequiredWithoutAFallbackUsesProvidedErrorMessageOnFailureDueToEmptyArray()
+    {
+        $expected = 'error message';
+
+        $input = $this->input;
+        $input->setRequired(true);
+        $input->setErrorMessage($expected);
+        $input->setValue([]);
+
+        $this->assertFalse($input->isValid());
+
+        $messages = $input->getMessages();
+        $this->assertCount(1, $messages);
+        $message = array_pop($messages);
+        $this->assertEquals($expected, $message);
+    }
+
     public function testSetValueWithInvalidInputTypeThrowsInvalidArgumentException()
     {
         $this->expectException(InvalidArgumentException::class);