it: test region creation

src/it/test_ifs/test_region.rs

@@ -0,0 +1,81 @@
+use {
+    crate::{
+        ifs::wl_region::WlRegion,
+        it::{
+            test_error::TestError,
+            test_object::{Deleted, TestObject},
+            test_transport::TestTransport,
+        },
+        rect::{Rect, RegionBuilder},
+        wire::{wl_region::*, WlRegionId},
+    },
+    std::{
+        cell::{Cell, RefCell},
+        rc::Rc,
+    },
+};
+
+pub struct TestRegion {
+    pub id: WlRegionId,
+    pub tran: Rc<TestTransport>,
+    pub destroyed: Cell<bool>,
+    pub deleted: Deleted,
+    pub server: Rc<WlRegion>,
+    pub expected: RefCell<RegionBuilder>,
+}
+
+impl TestRegion {
+    pub fn destroy(&self) -> Result<(), TestError> {
+        self.deleted.check()?;
+        if !self.destroyed.replace(true) {
+            self.tran.send(Destroy { self_id: self.id });
+        }
+        Ok(())
+    }
+
+    pub fn add(&self, rect: Rect) -> Result<(), TestError> {
+        self.deleted.check()?;
+        self.expected.borrow_mut().add(rect);
+        self.tran.send(Add {
+            self_id: self.id,
+            x: rect.x1(),
+            y: rect.y1(),
+            width: rect.width(),
+            height: rect.height(),
+        });
+        Ok(())
+    }
+
+    pub fn subtract(&self, rect: Rect) -> Result<(), TestError> {
+        self.deleted.check()?;
+        self.expected.borrow_mut().sub(rect);
+        self.tran.send(Subtract {
+            self_id: self.id,
+            x: rect.x1(),
+            y: rect.y1(),
+            width: rect.width(),
+            height: rect.height(),
+        });
+        Ok(())
+    }
+
+    pub async fn check(&self) -> Result<(), TestError> {
+        self.tran.sync().await;
+        let expected = self.expected.borrow_mut().get();
+        let actual = self.server.region();
+        tassert_eq!(expected, actual);
+        Ok(())
+    }
+}
+
+impl Drop for TestRegion {
+    fn drop(&mut self) {
+        let _ = self.destroy();
+    }
+}
+
+test_object! {
+    TestRegion, WlRegion;
+}
+
+impl TestObject for TestRegion {}