move to a dedicated test, and test for when no domain is passed in

tests/StaticCaching/ApplicationCacherTest.php

@@ -6,6 +6,7 @@
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Event;
 use Statamic\Events\UrlInvalidated;
+use Statamic\StaticCaching\Cacher;
 use Statamic\StaticCaching\Cachers\ApplicationCacher;
 use Tests\TestCase;
 
@@ -57,8 +58,6 @@ public function checking_if_page_is_cached_then_retrieving_it_will_only_hit_the_
     /** @test */
     public function invalidating_a_url_removes_the_html_and_the_url()
     {
-        Event::fake();
-
         $cache = app(Repository::class);
         $cacher = new ApplicationCacher($cache, ['base_url' => 'http://example.com']);
         $cache->forever('static-cache:'.md5('http://example.com').'.urls', [
@@ -79,17 +78,11 @@ public function invalidating_a_url_removes_the_html_and_the_url()
         $this->assertNull($cache->get('static-cache:responses:one'));
         $this->assertNotNull($cache->get('static-cache:responses:onemore'));
         $this->assertNotNull($cache->get('static-cache:responses:two'));
-
-        Event::assertDispatched(UrlInvalidated::class, function ($event) {
-            return $event->url === '/one';
-        });
     }
 
     /** @test */
     public function invalidating_a_url_will_invalidate_all_query_string_versions_too()
     {
-        Event::fake();
-
         $cache = app(Repository::class);
         $cacher = new ApplicationCacher($cache, ['base_url' => 'http://example.com']);
         $cache->forever('static-cache:'.md5('http://example.com').'.urls', [
@@ -113,12 +106,39 @@ public function invalidating_a_url_will_invalidate_all_query_string_versions_too
         $this->assertNull($cache->get('static-cache:responses:oneqs'));
         $this->assertNotNull($cache->get('static-cache:responses:onemore'));
         $this->assertNotNull($cache->get('static-cache:responses:two'));
+    }
 
-        Event::assertDispatched(UrlInvalidated::class, function ($event) {
-            return $event->url === '/one';
+    /**
+     * @test
+     *
+     * @dataProvider invalidateEventProvider
+     */
+    public function invalidating_a_url_dispatches_event($domain, $expectedUrl)
+    {
+        Event::fake();
+
+        $cache = app(Repository::class);
+        $cacher = new ApplicationCacher($cache, ['base_url' => 'http://base.com']);
+
+        // Put it in the container so that the event can resolve it.
+        $this->instance(Cacher::class, $cacher);
+
+        $cacher->invalidateUrl('/foo', $domain);
+
+        Event::assertDispatched(UrlInvalidated::class, function ($event) use ($expectedUrl) {
+            return $event->url === $expectedUrl;
         });
     }
 
+    public function invalidateEventProvider()
+    {
+        return [
+            'no domain' => [null, 'http://base.com/foo'],
+            'configured base domain' => ['http://base.com', 'http://base.com/foo'],
+            'another domain' => ['http://another.com', 'http://another.com/foo'],
+        ];
+    }
+
     /** @test */
     public function it_flushes()
     {