diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5f70f10
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+vendor/
+resources/
+composer.lock
+
+assets/
diff --git a/tests/GridFieldEditableColumnsTest.php b/tests/GridFieldEditableColumnsTest.php
new file mode 100644
index 0000000..7cb6af3
--- /dev/null
+++ b/tests/GridFieldEditableColumnsTest.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace Symbiote\GridFieldExtensions\Tests;
+
+use Symbiote\GridFieldExtensions\Tests\Stub\TestController;
+use Symbiote\GridFieldExtensions\Tests\Stub\StubUnorderable;
+use Symbiote\GridFieldExtensions\GridFieldEditableColumns;
+use SilverStripe\ORM\FieldType\DBHTMLText;
+use SilverStripe\Forms\TextField;
+use SilverStripe\Forms\GridField\GridField;
+use SilverStripe\Forms\Form;
+use SilverStripe\Forms\FieldList;
+use SilverStripe\Dev\SapphireTest;
+
+class GridFieldEditableColumnsTest extends SapphireTest
+{
+    private function getMockGrid()
+    {
+        $controller = new TestController('Test');
+        $form = new Form($controller, 'TestForm', new FieldList(
+            $grid = new GridField('TestGridField')
+        ), new FieldList());
+        $grid->setModelClass(StubUnorderable::class);
+        $grid->setList(StubUnorderable::get());
+        return $grid;
+    }
+
+    private function getMockRecord($id, $title)
+    {
+        $record = new StubUnorderable();
+        $record->ID = $id;
+        $record->Title = $title;
+        return $record;
+    }
+
+    public function testProvidesEditableFieldsInColumns()
+    {
+        $grid = $this->getMockGrid();
+        $component = new GridFieldEditableColumns();
+        $record = $this->getMockRecord(100, "foo");
+
+        $this->assertEquals(
+            [ 'Title' ],
+            $component->getColumnsHandled($grid)
+        );
+
+        $record->setCanEdit(true);
+        $column = $component->getColumnContent($grid, $record, 'Title');
+
+        $this->assertInstanceOf(DBHTMLText::class, $column);
+        $this->assertRegExp(
+            '/<input type="text" name="TestGridField\[GridFieldEditableColumns\]\[100\]\[Title\]" value="foo"[^>]*>/',
+            $column->getValue()
+        );
+    }
+
+    public function testProvidesReadonlyColumnsForNoneditableRecords()
+    {
+        $grid = $this->getMockGrid();
+        $component = new GridFieldEditableColumns();
+        $record = $this->getMockRecord(100, "testval");
+
+        $record->setCanEdit(false);
+        $column = $component->getColumnContent($grid, $record, 'Title');
+
+        $this->assertInstanceOf(DBHTMLText::class, $column);
+        $this->assertRegExp(
+            '/<span[^>]*>\s*testval\s*<\/span>/',
+            $column->getValue()
+        );
+    }
+
+    public function testProvidesReadonlyColumnsForReadonlyGrids()
+    {
+        $grid = $this->getMockGrid();
+        $component = new GridFieldEditableColumns();
+        $record = $this->getMockRecord(100, "testval");
+
+        $record->setCanEdit(true);
+        $grid = $grid->performReadonlyTransformation();
+
+        if (!$grid instanceof GridField) {
+            $this->markTestSkipped('silverstripe/framework <4.2.2 doesn\'t support readonly GridFields');
+        }
+
+        $column = $component->getColumnContent($grid, $record, 'Title');
+
+        $this->assertInstanceOf(DBHTMLText::class, $column);
+        $this->assertRegExp(
+            '/<span[^>]*>\s*testval\s*<\/span>/',
+            $column->getValue()
+        );
+    }
+}
diff --git a/tests/Stub/StubUnorderable.php b/tests/Stub/StubUnorderable.php
index a1969ab..abed5ec 100644
--- a/tests/Stub/StubUnorderable.php
+++ b/tests/Stub/StubUnorderable.php
@@ -12,4 +12,16 @@ class StubUnorderable extends DataObject implements TestOnly
     ];
 
     private static $table_name = 'StubUnorderable';
+
+    private $canEdit = false;
+
+    public function setCanEdit($canEdit)
+    {
+        $this->canEdit = $canEdit;
+    }
+
+    public function canEdit($member = null)
+    {
+        return $this->canEdit;
+    }
 }
diff --git a/tests/Stub/TestController.php b/tests/Stub/TestController.php
new file mode 100644
index 0000000..0e5baeb
--- /dev/null
+++ b/tests/Stub/TestController.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace Symbiote\GridFieldExtensions\Tests\Stub;
+
+use SilverStripe\Control\Controller;
+
+class TestController extends Controller
+{
+    private static $url_segment = 'test';
+}