Add select2 tests

Author: yajra

src/Html/Editor/Fields/Select2.php

@@ -103,7 +103,7 @@ public function processPaginatedResults(string $display = 'text', string $id = '
     {
         $script = 'function(data, params) { ';
         $script .= 'params.page = params.page || 1; ';
-        $script .= "data.data.map(function(e) { e.text = e.{$display}; e.id = e.{$id}; return e; }); ";
+        $script .= "data.data.map(function(e) { e.text = e.$display; e.id = e.$id; return e; }); ";
         $script .= 'return { results: data.data, pagination: { more: data.current_page < data.last_page } };';
         $script .= '}';
 

tests/FieldTest.php

@@ -187,8 +187,15 @@ public function it_can_create_select2_field()
         $this->assertEquals('select2', $field->getType());
         $this->assertEquals('/url', $field->opts['ajax']['url']);
         $this->assertEquals('Test', $field->opts['placeholder']['text']);
-        $this->assertEquals('id', $field->opts['placeholder']['id']);
+        $this->assertEquals('', $field->opts['placeholder']['id']);
         $this->assertCount(20, $field->options);
+
+        $field->processResults('fn');
+        $this->assertEquals('fn', $field->opts['ajax']['processResults']);
+
+        $field->processPaginatedResults('username', 'user_id');
+        $this->assertStringContainsString('e.text = e.username', $field->opts['ajax']['processResults']);
+        $this->assertStringContainsString('e.id = e.user_id', $field->opts['ajax']['processResults']);
     }
 
     /** @test */