Move dependency mapping to TestCase

The `TestCaseFactory::getClassName` was removed since it can have
unexpected results when called too early, as it builds up the test class
prematurely. It is not currently used anywhere else.

src/Concerns/TestCase.php

@@ -7,6 +7,7 @@ namespace Pest\Concerns;
 use Closure;
 use Pest\Support\ExceptionTrace;
 use Pest\TestSuite;
+use PHPUnit\Framework\ExecutionOrderDependency;
 use PHPUnit\Util\Test;
 use Throwable;
 
@@ -54,6 +55,24 @@ trait TestCase
         $this->setGroups($groups);
     }
 
+    /**
+     * Add dependencies to the test case and map them to instances of ExecutionOrderDependency.
+     */
+    public function addDependencies(array $tests): void
+    {
+        $className = get_class($this);
+
+        $tests = array_map(function (string $test) use ($className): ExecutionOrderDependency {
+            if (strpos($test, '::') === false) {
+                $test = "{$className}::{$test}";
+            }
+
+            return new ExecutionOrderDependency($test, null, '');
+        }, $tests);
+
+        $this->setDependencies($tests);
+    }
+
     /**
      * Returns the test case name. Note that, in Pest
      * we ignore withDataset argument as the description