@@ -64,6 +64,37 @@ jobs:
           composer global require php-coveralls/php-coveralls
           php-coveralls --coverage_clover=./build/logs/clover.xml -v
 
+  latest_dependency_tests:
+    name: Latest Deps (PHP ${{ matrix.php-versions }})
+    needs: [ linting ]
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: [ '8.1', '8.2' ]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Set up PHP v${{ matrix.php-versions }}
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+      - name: Install latest supported dependencies
+        run: composer update justinrainbow/json-schema lastguest/murmurhash --with-dependencies
+      - name: Verify latest majors resolved
+        run: |
+          php -r '
+            require "vendor/autoload.php";
+            $jsonSchema = Composer\InstalledVersions::getVersion("justinrainbow/json-schema");
+            $murmur = Composer\InstalledVersions::getVersion("lastguest/murmurhash");
+            echo "json-schema: $jsonSchema\nmurmurhash: $murmur\n";
+            exit((version_compare($jsonSchema, "6.0.0", ">=") && version_compare($murmur, "2.1.0", ">=")) ? 0 : 1);
+          '
+      - name: Run tests
+        run: |
+          mkdir -p ./build/logs
+          ./vendor/bin/phpunit
+
   integration_tests:
     name: Integration Tests
     needs: [ unit_tests ]
 
@@ -17,8 +17,8 @@
   "require": {
     "php": ">=8.1",
     "guzzlehttp/guzzle": ">=6.2",
-    "justinrainbow/json-schema": "^1.6 || ^2.0 || ^4.0 || ^5.0",
-    "lastguest/murmurhash": "^1.3.0",
+    "justinrainbow/json-schema": "^1.6 || ^2.0 || ^4.0 || ^5.0 || ^6.0",
+    "lastguest/murmurhash": "^1.3.0 || ^2.1",
     "monolog/monolog": ">=1.21"
   },
   "require-dev": {
 
@@ -72,7 +72,11 @@ public function __construct(LoggerInterface $logger)
      */
     private function generateHashCode($bucketingKey)
     {
-        return murmurhash3_int($bucketingKey, Bucketer::$HASH_SEED) & Bucketer::$UNSIGNED_MAX_32_BIT_VALUE;
+        // murmurhash v2 replaced the global function with a static class method
+        $hash = function_exists('murmurhash3_int')
+            ? murmurhash3_int($bucketingKey, Bucketer::$HASH_SEED)
+            : \lastguest\Murmur::hash3_int($bucketingKey, Bucketer::$HASH_SEED);
+        return $hash & Bucketer::$UNSIGNED_MAX_32_BIT_VALUE;
     }
 
     /**
 
@@ -88,6 +88,15 @@ public function testGenerateBucketValue()
                 )
             )
         );
+        // Edge cases: empty string and multibyte UTF-8
+        $this->assertSame(
+            3175,
+            $generateBucketValueMethod->invoke(new Bucketer($this->loggerMock), '')
+        );
+        $this->assertSame(
+            8308,
+            $generateBucketValueMethod->invoke(new Bucketer($this->loggerMock), '日本語テスト1886780721')
+        );
     }
 
     public function testBucketValidExperimentNotInGroup()
Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,11 @@ public function __construct(LoggerInterface $logger)`
`72`	`72`	`*/`
`73`	`73`	`private function generateHashCode($bucketingKey)`
`74`	`74`	`{`
`75`		`- return murmurhash3_int($bucketingKey, Bucketer::$HASH_SEED) & Bucketer::$UNSIGNED_MAX_32_BIT_VALUE;`
	`75`	`+ // murmurhash v2 replaced the global function with a static class method`
	`76`	`+ $hash = function_exists('murmurhash3_int')`
	`77`	`+ ? murmurhash3_int($bucketingKey, Bucketer::$HASH_SEED)`
	`78`	`+ : \lastguest\Murmur::hash3_int($bucketingKey, Bucketer::$HASH_SEED);`
	`79`	`+ return $hash & Bucketer::$UNSIGNED_MAX_32_BIT_VALUE;`
`76`	`80`	`}`
`77`	`81`
`78`	`82`	`/**`
Original file line number	Diff line number	Diff line change
`@@ -88,6 +88,15 @@ public function testGenerateBucketValue()`
`88`	`88`	`)`
`89`	`89`	`)`
`90`	`90`	`);`
	`91`	`+ // Edge cases: empty string and multibyte UTF-8`
	`92`	`+ $this->assertSame(`
	`93`	`+ 3175,`
	`94`	`+ $generateBucketValueMethod->invoke(new Bucketer($this->loggerMock), '')`
	`95`	`+ );`
	`96`	`+ $this->assertSame(`
	`97`	`+ 8308,`
	`98`	`+ $generateBucketValueMethod->invoke(new Bucketer($this->loggerMock), '日本語テスト1886780721')`
	`99`	`+ );`
`91`	`100`	`}`
`92`	`101`
`93`	`102`	`public function testBucketValidExperimentNotInGroup()`