T11b loading: progress bars and rings that glide, loading overlay, lazy load, suspense and async view, refresh and typing indicators, upload list; draw-time notifies ask for a frame

src/forms/tests/mod.rs

@@ -3,6 +3,7 @@ mod colors;
 mod dates;
 mod other;
 mod structure;
+mod upload;
 
 use gpui::{
     AppContext as _, Context, Entity, EntityInputHandler, IntoElement, KeyUpEvent, Keystroke,

src/forms/tests/upload.rs

@@ -0,0 +1,78 @@
+use gpui::{
+    Context, IntoElement, KeyBinding, KeyUpEvent, Keystroke, Render, TestAppContext,
+    VisualTestContext, Window,
+};
+
+use super::setup;
+use crate::{
+    forms::{Upload, UploadList, UploadState},
+    primitives::FocusNext,
+};
+
+/// Three uploads, one in each state, recording which buttons ran.
+struct Shelf {
+    log: Vec<String>,
+}
+
+impl Render for Shelf {
+    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
+        let note = |what: &'static str, cx: &mut Context<Self>| {
+            let view = cx.entity();
+            move |ix: usize, _: &mut Window, cx: &mut gpui::App| {
+                view.update(cx, |shelf, _| shelf.log.push(format!("{what} {ix}")))
+            }
+        };
+        let file = |name: &str, state| Upload {
+            name: name.to_string().into(),
+            bytes: 1_000,
+            state,
+        };
+        UploadList::new(
+            "uploads",
+            [
+                file("a", UploadState::Uploading(0.5)),
+                file("b", UploadState::Failed("Too big".into())),
+                file("c", UploadState::Done),
+            ],
+        )
+        .on_cancel(note("cancel", cx))
+        .on_retry(note("retry", cx))
+        .on_remove(note("remove", cx))
+    }
+}
+
+fn press(key: &str, cx: &mut VisualTestContext) {
+    cx.simulate_keystrokes(key);
+    cx.simulate_event(KeyUpEvent {
+        keystroke: Keystroke::parse(key).expect("a key"),
+    });
+    cx.run_until_parked();
+}
+
+#[gpui::test]
+fn each_row_offers_what_its_state_allows(cx: &mut TestAppContext) {
+    setup(cx);
+    cx.update(|cx| cx.bind_keys([KeyBinding::new("tab", FocusNext, None)]));
+    let (view, cx) = cx.add_window_view(|_, _| Shelf { log: Vec::new() });
+    cx.update(|window, _| window.focus_next());
+    press("enter", cx);
+    cx.update(|window, _| window.focus_next());
+    press("enter", cx);
+    cx.update(|window, _| window.focus_next());
+    press("enter", cx);
+    let log = view.read_with(cx, |shelf, _| shelf.log.clone());
+    assert_eq!(log, ["cancel 0", "retry 1", "remove 2"]);
+}
+
+#[test]
+#[should_panic(expected = "not 0..=1")]
+fn an_upload_past_whole_is_refused() {
+    let _ = UploadList::new(
+        "uploads",
+        [Upload {
+            name: "a".into(),
+            bytes: 1,
+            state: UploadState::Uploading(1.5),
+        }],
+    );
+}