it: test output transforms

src/it/tests/t0026_output_transform.rs

@@ -0,0 +1,27 @@
+use {
+    crate::it::{test_error::TestResult, testrun::TestRun},
+    jay_config::video::Transform,
+    std::rc::Rc,
+};
+
+testcase!();
+
+async fn test(run: Rc<TestRun>) -> TestResult {
+    let ds = run.create_default_setup().await?;
+
+    run.cfg
+        .set_output_transform(&ds.output, Transform::FlipRotate90)?;
+
+    let client = run.create_client().await?;
+    let win = client.create_window().await?;
+
+    let transform = win.surface.preferred_buffer_transform.expect()?;
+
+    win.map2().await?;
+
+    tassert_eq!(transform.next()?, 5);
+
+    client.compare_screenshot("1", false).await?;
+
+    Ok(())
+}