add content-type matcher

src/Content/ContentType.php

@@ -48,8 +48,8 @@ public static function newFromString($string) {
         if(count($typeParts) !== 2) {
             return null;
         }
-        $mainType = strtolower($typeParts[0]);
-        $subType = strtolower($typeParts[1]);
+        $mainType = $typeParts[0];
+        $subType = $typeParts[1];
         $parameters = [];
         array_shift($parts);
         foreach($parts as $part) {
@@ -87,9 +87,12 @@ public static function newFromString($string) {
      * @param string[] $parameters - key value pairs of parameters (ex: ['charset' => 'utf-8']
      */
     public function __construct($mainType, $subType, array $parameters = []) {
-        $this->mainType = $mainType;
-        $this->subType = $subType;
-        $this->parameters = $parameters;
+        $this->mainType = strtolower($mainType);
+        $this->subType = strtolower($subType);
+        $this->parameters = [];
+        foreach($parameters as $parameter => $value) {
+            $this->parameters[strtolower($parameter)] = strtolower($value);
+        }
     }
 
     /**
@@ -99,6 +102,17 @@ public function __toString() {
         return $this->toString();
     }
 
+    /**
+     * @param ContentType $contentType
+     * @param bool $includeParameters - include parameters when matching content-type string (default: false)
+     * @return bool
+     */
+    public function is(ContentType $contentType, $includeParameters = false) {
+        return $includeParameters
+            ? $this->toString() === $contentType->toString()
+            : $this->mainType === $contentType->mainType && $this->subType === $contentType->subType;
+    }
+
     /**
      * @return bool
      */

tests/Content/ContentType/is_Test.php

@@ -0,0 +1,97 @@
+<?php
+/**
+ * MindTouch HTTP
+ * Copyright (C) 2006-2018 MindTouch, Inc.
+ * www.mindtouch.com  [email protected]
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+namespace MindTouch\Http\tests\Content\SerializedPhpArrayContent;
+
+use MindTouch\Http\Content\ContentType;
+use MindTouch\Http\tests\MindTouchHttpUnitTestCase;
+
+class is_Test extends MindTouchHttpUnitTestCase {
+
+    /**
+     * @test
+     */
+    public function Can_match_content_type_with_parameters() {
+
+        // arrange
+        $contentType1 = ContentType::newFromString(ContentType::XML);
+        $contentType2 = ContentType::newFromString(ContentType::XML);
+
+        // act
+        $result1 = $contentType1->is($contentType2, true);
+        $result2 = $contentType2->is($contentType1, true);
+
+        // assert
+        $this->assertTrue($result1);
+        $this->assertTrue($result2);
+    }
+
+    /**
+     * @test
+     */
+    public function Can_match_content_type_without_parameters() {
+
+        // arrange
+        $contentType1 = ContentType::newFromString('text/html; charset=latin');
+        $contentType2 = ContentType::newFromString('text/html; charset=utf-8');
+
+        // act
+        $result1 = $contentType1->is($contentType2);
+        $result2 = $contentType2->is($contentType1);
+
+        // assert
+        $this->assertTrue($result1);
+        $this->assertTrue($result2);
+    }
+
+    /**
+     * @test
+     */
+    public function Can_fail_if_content_type_not_matched_with_parameters() {
+
+        // arrange
+        $contentType1 = ContentType::newFromString('text/html; charset=utf-8');
+        $contentType2 = ContentType::newFromString('text/css; charset=utf-8');
+
+        // act
+        $result1 = $contentType1->is($contentType2);
+        $result2 = $contentType2->is($contentType1);
+
+        // assert
+        $this->assertFalse($result1);
+        $this->assertFalse($result2);
+    }
+
+    /**
+     * @test
+     */
+    public function Can_fail_if_content_type_not_matched_without_parameters() {
+
+        // arrange
+        $contentType1 = ContentType::newFromString('text/html; charset=utf-8');
+        $contentType2 = ContentType::newFromString('text/html; charset=latin');
+
+        // act
+        $result1 = $contentType1->is($contentType2, true);
+        $result2 = $contentType2->is($contentType1, true);
+
+        // assert
+        $this->assertFalse($result1);
+        $this->assertFalse($result2);
+    }
+}