- $this->assertSame('1 column layout', $layout_definition->getLabel());
- $this->assertSame('Columns: 1', $layout_definition->getCategory());
+ $this->assertSame('1 column layout', (string) $layout_definition->getLabel());
+ $this->assertSame('Columns: 1', (string) $layout_definition->getCategory());
+ $this->assertSame('A module provided layout', (string) $layout_definition->getDescription());
+ $this->assertTrue($layout_definition->getLabel() instanceof TranslatableMarkup);
+ $this->assertTrue($layout_definition->getCategory() instanceof TranslatableMarkup);
+ $this->assertTrue($layout_definition->getDescription() instanceof TranslatableMarkup);