Implement asString for Assertion\Made Event

Co-authored-by: Andreas Möller <[email protected]>
Co-authored-by: Arne Blankerts <[email protected]>

src/Event/Assertion/Made.php

@@ -75,6 +75,13 @@ public function hasFailed(): bool
 
     public function asString(): string
     {
-        return '';
+        return sprintf(
+            '%s Assertion Made (Constraint: %s - Value: %s - Failed: %s - Message: %s)',
+            $this->telemetryInfo()->asString(),
+            $this->constraint()->toString(),
+            (string) $this->value(),
+            $this->hasFailed() ? 'true' : 'false',
+            $this->message()
+        );
     }
 }