minor symfony#59116 [TwigBridge] Add tests covering trans_default_domain with dynamic expressions (stof)

This PR was merged into the 6.4 branch.

Discussion
----------

[TwigBridge] Add tests covering `trans_default_domain` with dynamic expressions

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

This adds tests covering the usage of `{% trans_default_domain %}` with dynamic expressions (which we broken in 7.2.0 and fixed in symfony#59059, which those tests would have caught).
I'm adding those tests in 6.4 to increase test coverage on all versions, given that the test does not require changes anyway when upmerging.

#SymfonyHackday

Commits
-------

6262a62 Add tests covering `trans_default_domain` with dynamic expressions

Author: nicolas-grekas

src/Symfony/Bridge/Twig/Tests/Extension/TranslationExtensionTest.php

@@ -206,6 +206,68 @@ public function testDefaultTranslationDomainWithNamedArguments()
         $this->assertEquals('foo (custom)foo (foo)foo (custom)foo (custom)foo (fr)foo (custom)foo (fr)', trim($template->render([])));
     }
 
+    public function testDefaultTranslationDomainWithExpression()
+    {
+        $templates = [
+            'index' => '
+                {%- extends "base" %}
+
+                {%- trans_default_domain custom_domain %}
+
+                {%- block content %}
+                    {{- "foo"|trans }}
+                {%- endblock %}
+            ',
+
+            'base' => '
+                {%- block content "" %}
+            ',
+        ];
+
+        $translator = new Translator('en');
+        $translator->addLoader('array', new ArrayLoader());
+        $translator->addResource('array', ['foo' => 'foo (messages)'], 'en');
+        $translator->addResource('array', ['foo' => 'foo (custom)'], 'en', 'custom');
+        $translator->addResource('array', ['foo' => 'foo (foo)'], 'en', 'foo');
+
+        $template = $this->getTemplate($templates, $translator);
+
+        $this->assertEquals('foo (foo)', trim($template->render(['custom_domain' => 'foo'])));
+    }
+
+    public function testDefaultTranslationDomainWithExpressionAndInheritance()
+    {
+        $templates = [
+            'index' => '
+                {%- extends "base" %}
+
+                {%- trans_default_domain foo_domain %}
+
+                {%- block content %}
+                    {{- "foo"|trans }}
+                {%- endblock %}
+            ',
+
+            'base' => '
+                {%- trans_default_domain custom_domain %}
+
+                {{- "foo"|trans }}
+                {%- block content "" %}
+                {{- "foo"|trans }}
+            ',
+        ];
+
+        $translator = new Translator('en');
+        $translator->addLoader('array', new ArrayLoader());
+        $translator->addResource('array', ['foo' => 'foo (messages)'], 'en');
+        $translator->addResource('array', ['foo' => 'foo (custom)'], 'en', 'custom');
+        $translator->addResource('array', ['foo' => 'foo (foo)'], 'en', 'foo');
+
+        $template = $this->getTemplate($templates, $translator);
+
+        $this->assertEquals('foo (custom)foo (foo)foo (custom)', trim($template->render(['foo_domain' => 'foo', 'custom_domain' => 'custom'])));
+    }
+
     private function getTemplate($template, ?TranslatorInterface $translator = null): TemplateWrapper
     {
         $translator ??= new Translator('en');