Move editor into its own crate

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/zed/src/test.rs

@@ -10,11 +10,10 @@ use crate::{
 use anyhow::Result;
 use buffer::LanguageRegistry;
 use futures::{future::BoxFuture, Future};
-use gpui::{Entity, ModelHandle, MutableAppContext};
+use gpui::MutableAppContext;
 use parking_lot::Mutex;
 use rpc_client as rpc;
-use smol::channel;
-use std::{fmt, marker::PhantomData, sync::Arc};
+use std::{fmt, sync::Arc};
 use worktree::fs::FakeFs;
 
 #[cfg(test)]
@@ -23,19 +22,6 @@ fn init_logger() {
     env_logger::init();
 }
 
-pub fn sample_text(rows: usize, cols: usize) -> String {
-    let mut text = String::new();
-    for row in 0..rows {
-        let c: char = ('a' as u32 + row as u32) as u8 as char;
-        let mut line = c.to_string().repeat(cols);
-        if row < rows - 1 {
-            line.push('\n');
-        }
-        text += &line;
-    }
-    text
-}
-
 pub fn test_app_state(cx: &mut MutableAppContext) -> Arc<AppState> {
     let (settings_tx, settings) = settings::test(cx);
     let mut languages = LanguageRegistry::new();
@@ -56,29 +42,6 @@ pub fn test_app_state(cx: &mut MutableAppContext) -> Arc<AppState> {
     })
 }
 
-pub struct Observer<T>(PhantomData<T>);
-
-impl<T: 'static> Entity for Observer<T> {
-    type Event = ();
-}
-
-impl<T: Entity> Observer<T> {
-    pub fn new(
-        handle: &ModelHandle<T>,
-        cx: &mut gpui::TestAppContext,
-    ) -> (ModelHandle<Self>, channel::Receiver<()>) {
-        let (notify_tx, notify_rx) = channel::unbounded();
-        let observer = cx.add_model(|cx| {
-            cx.observe(handle, move |_, _, _| {
-                let _ = notify_tx.try_send(());
-            })
-            .detach();
-            Observer(PhantomData)
-        });
-        (observer, notify_rx)
-    }
-}
-
 pub struct FakeHttpClient {
     handler:
         Box<dyn 'static + Send + Sync + Fn(Request) -> BoxFuture<'static, Result<ServerResponse>>>,