Create test_app_state with FakeFs instead of RealFs

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

zed/src/file_finder.rs

@@ -438,29 +438,37 @@ mod tests {
     use crate::{
         editor::{self, Insert},
         fs::FakeFs,
-        test::{temp_tree, test_app_state},
+        test::test_app_state,
         workspace::Workspace,
     };
     use serde_json::json;
-    use std::fs;
-    use tempdir::TempDir;
+    use std::path::PathBuf;
 
     #[gpui::test]
     async fn test_matching_paths(mut cx: gpui::TestAppContext) {
-        let tmp_dir = TempDir::new("example").unwrap();
-        fs::create_dir(tmp_dir.path().join("a")).unwrap();
-        fs::write(tmp_dir.path().join("a/banana"), "banana").unwrap();
-        fs::write(tmp_dir.path().join("a/bandana"), "bandana").unwrap();
+        let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree(
+                "/root",
+                json!({
+                    "a": {
+                        "banana": "",
+                        "bandana": "",
+                    }
+                }),
+            )
+            .await;
         cx.update(|cx| {
             super::init(cx);
             editor::init(cx);
         });
 
-        let app_state = cx.update(test_app_state);
         let (window_id, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(tmp_dir.path(), cx)
+                workspace.add_worktree(Path::new("/root"), cx)
             })
             .await
             .unwrap();
@@ -572,17 +580,17 @@ mod tests {
 
     #[gpui::test]
     async fn test_single_file_worktrees(mut cx: gpui::TestAppContext) {
-        let temp_dir = TempDir::new("test-single-file-worktrees").unwrap();
-        let dir_path = temp_dir.path().join("the-parent-dir");
-        let file_path = dir_path.join("the-file");
-        fs::create_dir(&dir_path).unwrap();
-        fs::write(&file_path, "").unwrap();
-
         let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree("/root", json!({ "the-parent-dir": { "the-file": "" } }))
+            .await;
+
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(&file_path, cx)
+                workspace.add_worktree(Path::new("/root/the-parent-dir/the-file"), cx)
             })
             .await
             .unwrap();
@@ -620,18 +628,25 @@ mod tests {
 
     #[gpui::test(retries = 5)]
     async fn test_multiple_matches_with_same_relative_path(mut cx: gpui::TestAppContext) {
-        let tmp_dir = temp_tree(json!({
-            "dir1": { "a.txt": "" },
-            "dir2": { "a.txt": "" }
-        }));
-
         let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree(
+                "/root",
+                json!({
+                    "dir1": { "a.txt": "" },
+                    "dir2": { "a.txt": "" }
+                }),
+            )
+            .await;
+
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
 
         workspace
             .update(&mut cx, |workspace, cx| {
                 workspace.open_paths(
-                    &[tmp_dir.path().join("dir1"), tmp_dir.path().join("dir2")],
+                    &[PathBuf::from("/root/dir1"), PathBuf::from("/root/dir2")],
                     cx,
                 )
             })

zed/src/fs.rs

@@ -29,6 +29,8 @@ pub trait Fs: Send + Sync {
         latency: Duration,
     ) -> Pin<Box<dyn Send + Stream<Item = Vec<fsevent::Event>>>>;
     fn is_fake(&self) -> bool;
+    #[cfg(any(test, feature = "test-support"))]
+    fn as_fake(&self) -> &FakeFs;
 }
 
 #[derive(Clone, Debug)]
@@ -125,6 +127,11 @@ impl Fs for RealFs {
     fn is_fake(&self) -> bool {
         false
     }
+
+    #[cfg(any(test, feature = "test-support"))]
+    fn as_fake(&self) -> &FakeFs {
+        panic!("called `RealFs::as_fake`")
+    }
 }
 
 #[derive(Clone, Debug)]
@@ -413,4 +420,9 @@ impl Fs for FakeFs {
     fn is_fake(&self) -> bool {
         true
     }
+
+    #[cfg(any(test, feature = "test-support"))]
+    fn as_fake(&self) -> &FakeFs {
+        self
+    }
 }

zed/src/test.rs

@@ -1,7 +1,7 @@
 use crate::{
     assets::Assets,
     channel::ChannelList,
-    fs::RealFs,
+    fs::FakeFs,
     http::{HttpClient, Request, Response, ServerResponse},
     language::LanguageRegistry,
     rpc::{self, Client, Credentials, EstablishConnectionError},
@@ -177,7 +177,7 @@ pub fn test_app_state(cx: &mut MutableAppContext) -> Arc<AppState> {
         channel_list: cx.add_model(|cx| ChannelList::new(user_store.clone(), rpc.clone(), cx)),
         rpc,
         user_store,
-        fs: Arc::new(RealFs),
+        fs: Arc::new(FakeFs::new()),
     })
 }
 

zed/src/workspace.rs

@@ -1205,11 +1205,9 @@ mod tests {
         editor::{Editor, Insert},
         fs::FakeFs,
         test::{temp_tree, test_app_state},
-        worktree::WorktreeHandle,
     };
     use serde_json::json;
-    use std::{collections::HashSet, fs};
-    use tempdir::TempDir;
+    use std::collections::HashSet;
 
     #[gpui::test]
     async fn test_open_paths_action(mut cx: gpui::TestAppContext) {
@@ -1278,20 +1276,26 @@ mod tests {
 
     #[gpui::test]
     async fn test_open_entry(mut cx: gpui::TestAppContext) {
-        let dir = temp_tree(json!({
-            "a": {
-                "file1": "contents 1",
-                "file2": "contents 2",
-                "file3": "contents 3",
-            },
-        }));
-
         let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree(
+                "/root",
+                json!({
+                    "a": {
+                        "file1": "contents 1",
+                        "file2": "contents 2",
+                        "file3": "contents 3",
+                    },
+                }),
+            )
+            .await;
 
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(dir.path(), cx)
+                workspace.add_worktree(Path::new("/root"), cx)
             })
             .await
             .unwrap();
@@ -1455,28 +1459,30 @@ mod tests {
 
     #[gpui::test]
     async fn test_save_conflicting_item(mut cx: gpui::TestAppContext) {
-        let dir = temp_tree(json!({
-            "a.txt": "",
-        }));
-
         let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree(
+                "/root",
+                json!({
+                    "a.txt": "",
+                }),
+            )
+            .await;
+
         let (window_id, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(dir.path(), cx)
+                workspace.add_worktree(Path::new("/root"), cx)
             })
             .await
             .unwrap();
-        let tree = cx.read(|cx| {
-            let mut trees = workspace.read(cx).worktrees().iter();
-            trees.next().unwrap().clone()
-        });
-        tree.flush_fs_events(&cx).await;
 
         // Open a file within an existing worktree.
         cx.update(|cx| {
             workspace.update(cx, |view, cx| {
-                view.open_paths(&[dir.path().join("a.txt")], cx)
+                view.open_paths(&[PathBuf::from("/root/a.txt")], cx)
             })
         })
         .await;
@@ -1487,7 +1493,12 @@ mod tests {
         });
 
         cx.update(|cx| editor.update(cx, |editor, cx| editor.insert(&Insert("x".into()), cx)));
-        fs::write(dir.path().join("a.txt"), "changed").unwrap();
+        app_state
+            .fs
+            .as_fake()
+            .insert_file("/root/a.txt", "changed".to_string())
+            .await
+            .unwrap();
         editor
             .condition(&cx, |editor, cx| editor.has_conflict(cx))
             .await;
@@ -1503,12 +1514,12 @@ mod tests {
 
     #[gpui::test]
     async fn test_open_and_save_new_file(mut cx: gpui::TestAppContext) {
-        let dir = TempDir::new("test-new-file").unwrap();
         let app_state = cx.update(test_app_state);
+        app_state.fs.as_fake().insert_dir("/root").await.unwrap();
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(dir.path(), cx)
+                workspace.add_worktree(Path::new("/root"), cx)
             })
             .await
             .unwrap();
@@ -1521,7 +1532,6 @@ mod tests {
                 .unwrap()
                 .clone()
         });
-        tree.flush_fs_events(&cx).await;
 
         // Create a new untitled buffer
         let editor = workspace.update(&mut cx, |workspace, cx| {
@@ -1547,7 +1557,7 @@ mod tests {
             workspace.save_active_item(&Save, cx)
         });
         cx.simulate_new_path_selection(|parent_dir| {
-            assert_eq!(parent_dir, dir.path());
+            assert_eq!(parent_dir, Path::new("/root"));
             Some(parent_dir.join("the-new-name.rs"))
         });
         cx.read(|cx| {
@@ -1608,8 +1618,8 @@ mod tests {
     async fn test_setting_language_when_saving_as_single_file_worktree(
         mut cx: gpui::TestAppContext,
     ) {
-        let dir = TempDir::new("test-new-file").unwrap();
         let app_state = cx.update(test_app_state);
+        app_state.fs.as_fake().insert_dir("/root").await.unwrap();
         let (_, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
 
         // Create a new untitled buffer
@@ -1633,7 +1643,7 @@ mod tests {
         workspace.update(&mut cx, |workspace, cx| {
             workspace.save_active_item(&Save, cx)
         });
-        cx.simulate_new_path_selection(|_| Some(dir.path().join("the-new-name.rs")));
+        cx.simulate_new_path_selection(|_| Some(PathBuf::from("/root/the-new-name.rs")));
 
         editor
             .condition(&cx, |editor, cx| !editor.is_dirty(cx))
@@ -1650,7 +1660,7 @@ mod tests {
         cx.update(init);
 
         let app_state = cx.update(test_app_state);
-        cx.dispatch_global_action(OpenNew(app_state));
+        cx.dispatch_global_action(OpenNew(app_state.clone()));
         let window_id = *cx.window_ids().first().unwrap();
         let workspace = cx.root_view::<Workspace>(window_id).unwrap();
         let editor = workspace.update(&mut cx, |workspace, cx| {
@@ -1670,10 +1680,8 @@ mod tests {
             workspace.save_active_item(&Save, cx)
         });
 
-        let dir = TempDir::new("test-new-empty-workspace").unwrap();
-        cx.simulate_new_path_selection(|_| {
-            Some(dir.path().canonicalize().unwrap().join("the-new-name"))
-        });
+        app_state.fs.as_fake().insert_dir("/root").await.unwrap();
+        cx.simulate_new_path_selection(|_| Some(PathBuf::from("/root/the-new-name")));
 
         editor
             .condition(&cx, |editor, cx| editor.title(cx) == "the-new-name")
@@ -1686,20 +1694,26 @@ mod tests {
     #[gpui::test]
     async fn test_pane_actions(mut cx: gpui::TestAppContext) {
         cx.update(|cx| pane::init(cx));
-
-        let dir = temp_tree(json!({
-            "a": {
-                "file1": "contents 1",
-                "file2": "contents 2",
-                "file3": "contents 3",
-            },
-        }));
-
         let app_state = cx.update(test_app_state);
+        app_state
+            .fs
+            .as_fake()
+            .insert_tree(
+                "/root",
+                json!({
+                    "a": {
+                        "file1": "contents 1",
+                        "file2": "contents 2",
+                        "file3": "contents 3",
+                    },
+                }),
+            )
+            .await;
+
         let (window_id, workspace) = cx.add_window(|cx| Workspace::new(&app_state, cx));
         workspace
             .update(&mut cx, |workspace, cx| {
-                workspace.add_worktree(dir.path(), cx)
+                workspace.add_worktree(Path::new("/root"), cx)
             })
             .await
             .unwrap();