Allows you to just specify an exception message when calling throws.

src/PendingObjects/TestCall.php

@@ -61,9 +61,13 @@ final class TestCall
      */
     public function throws(string $exceptionClass, string $exceptionMessage = null): TestCall
     {
+        if (class_exists($exceptionClass)) {
             $this->testCaseFactory
                 ->proxies
                 ->add(Backtrace::file(), Backtrace::line(), 'expectException', [$exceptionClass]);
+        } else {
+            $exceptionMessage = $exceptionClass;
+        }
 
         if (is_string($exceptionMessage)) {
             $this->testCaseFactory

tests/Features/Exceptions.php

@@ -13,3 +13,7 @@ it('catch exceptions', function () {
 it('catch exceptions and messages', function () {
     throw new Exception('Something bad happened');
 })->throws(Exception::class, 'Something bad happened');
+
+it('can just define the message', function () {
+    throw new Exception('Something bad happened');
+})->throws('Something bad happened');