tests: Add layer-shell scaffolding and an overflow test

1 files changed, 90 insertions, 0 deletions

diff --git a/src/tests/layer_shell.rs b/src/tests/layer_shell.rs
new file mode 100644
index 00000000..65014942
--- /dev/null
+++ b/src/tests/layer_shell.rs
@@ -0,0 +1,90 @@
+use insta::assert_snapshot;
+use smithay::reexports::wayland_protocols_wlr::layer_shell::v1::client::zwlr_layer_shell_v1::Layer;
+use smithay::reexports::wayland_protocols_wlr::layer_shell::v1::client::zwlr_layer_surface_v1::Anchor;
+
+use super::*;
+use crate::tests::client::{LayerConfigureProps, LayerMargin};
+
+#[test]
+fn simple_top_anchor() {
+    let mut f = Fixture::new();
+    f.add_output(1, (1920, 1080));
+    let id = f.add_client();
+
+    let layer = f.client(id).create_layer(None, Layer::Top, "");
+    let surface = layer.surface.clone();
+    layer.set_configure_props(LayerConfigureProps {
+        anchor: Some(Anchor::Left | Anchor::Right | Anchor::Top),
+        size: Some((0, 50)),
+        ..Default::default()
+    });
+    layer.commit();
+    f.roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    layer.attach_new_buffer();
+    layer.set_size(100, 100);
+    layer.ack_last_and_commit();
+    f.double_roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    assert_snapshot!(layer.format_recent_configures(), @"size: 1920 × 50");
+}
+
+#[test]
+fn margin_overflow() {
+    let mut f = Fixture::new();
+    f.add_output(1, (1920, 1080));
+    let id = f.add_client();
+
+    let layer = f.client(id).create_layer(None, Layer::Top, "");
+    let surface = layer.surface.clone();
+    layer.set_configure_props(LayerConfigureProps {
+        anchor: Some(Anchor::Left | Anchor::Right | Anchor::Top | Anchor::Bottom),
+        margin: Some(LayerMargin {
+            top: i32::MAX,
+            right: i32::MAX,
+            bottom: i32::MAX,
+            left: i32::MAX,
+        }),
+        exclusive_zone: Some(i32::MAX),
+        ..Default::default()
+    });
+    layer.commit();
+    f.roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    layer.attach_new_buffer();
+    layer.set_size(100, 100);
+    layer.ack_last_and_commit();
+    f.double_roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    assert_snapshot!(layer.format_recent_configures(), @"size: 0 × 0");
+
+    // Add a second one for good measure.
+    let layer = f.client(id).create_layer(None, Layer::Top, "");
+    let surface = layer.surface.clone();
+    layer.set_configure_props(LayerConfigureProps {
+        anchor: Some(Anchor::Left | Anchor::Right | Anchor::Top | Anchor::Bottom),
+        margin: Some(LayerMargin {
+            top: i32::MAX,
+            right: i32::MAX,
+            bottom: i32::MAX,
+            left: i32::MAX,
+        }),
+        exclusive_zone: Some(i32::MAX),
+        ..Default::default()
+    });
+    layer.commit();
+    f.roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    layer.attach_new_buffer();
+    layer.set_size(100, 100);
+    layer.ack_last_and_commit();
+    f.double_roundtrip(id);
+
+    let layer = f.client(id).layer(&surface);
+    assert_snapshot!(layer.format_recent_configures(), @"size: 0 × 0");
+}