Update test suite to avoid unhandled promise rejections

Author: clue

composer.json

@@ -28,7 +28,7 @@
     "require": {
         "php": ">=7.1",
         "react/event-loop": "^1.2",
-        "react/promise": "^3.0 || ^2.8 || ^1.2.1"
+        "react/promise": "dev-report-unhandled as 3.0.0"
     },
     "require-dev": {
         "phpstan/phpstan": "1.10.18 || 1.4.10",
@@ -41,5 +41,11 @@
     },
     "autoload-dev": {
         "psr-4": { "React\\Tests\\Async\\": "tests/" }
+    },
+    "repositories": {
+        "clue": {
+            "type": "vcs",
+            "url": "https://github.com/clue-labs/promise"
+        }
     }
 }

tests/CoroutineTest.php

@@ -193,6 +193,8 @@ public function testCoroutineShouldNotCreateAnyGarbageReferencesForPromiseReject
             });
         });
 
+        $promise->then(null, $this->expectCallableOnce()); // avoid reporting unhandled rejection
+
         unset($promise);
 
         $this->assertEquals(0, gc_collect_cycles());
@@ -232,6 +234,8 @@ public function testCoroutineShouldNotCreateAnyGarbageReferencesWhenGeneratorThr
             yield; // @phpstan-ignore-line
         });
 
+        $promise->then(null, $this->expectCallableOnce()); // avoid reporting unhandled rejection
+
         unset($promise);
 
         $this->assertEquals(0, gc_collect_cycles());
@@ -249,6 +253,8 @@ public function testCoroutineShouldNotCreateAnyGarbageReferencesWhenGeneratorYie
             yield 42;
         });
 
+        $promise->then(null, $this->expectCallableOnce()); // avoid reporting unhandled rejection
+
         unset($promise);
 
         $this->assertEquals(0, gc_collect_cycles());