fix: make e2e tests resilient to version manager shims (#271)

Author: branchseer

crates/vite_task_bin/tests/e2e_snapshots/fixtures/cache-miss-command-change/package.json

@@ -1,5 +1 @@
-{
-  "scripts": {
-    "task": "print foo && print bar"
-  }
-}
+{}

crates/vite_task_bin/tests/e2e_snapshots/fixtures/cache-miss-command-change/snapshots.toml

@@ -4,8 +4,8 @@
 name = "cache miss command change"
 steps = [
   "vt run task # cache miss",
-  "json-edit package.json '_.scripts.task = \"print baz && print bar\"' # change first subtask",
+  "json-edit vite-task.json '_.tasks.task.command = \"print baz && print bar\"' # change first subtask",
   "vt run task # first: cache miss, second: cache hit",
-  "json-edit package.json '_.scripts.task = \"print bar\"' # remove first subtask",
+  "json-edit vite-task.json '_.tasks.task.command = \"print bar\"' # remove first subtask",
   "vt run task # cache hit",
 ]

crates/vite_task_bin/tests/e2e_snapshots/fixtures/cache-miss-command-change/snapshots/cache miss command change.snap

@@ -11,7 +11,7 @@ bar
 
 ---
 vt run: 0/2 cache hit (0%). (Run `vt run --last-details` for full details)
-> json-edit package.json '_.scripts.task = "print baz && print bar"' # change first subtask
+> json-edit vite-task.json '_.tasks.task.command = "print baz && print bar"' # change first subtask
 
 > vt run task # first: cache miss, second: cache hit
 $ print baz ○ cache miss: args changed, executing
@@ -22,7 +22,7 @@ bar
 
 ---
 vt run: 1/2 cache hit (50%), <duration> saved. (Run `vt run --last-details` for full details)
-> json-edit package.json '_.scripts.task = "print bar"' # remove first subtask
+> json-edit vite-task.json '_.tasks.task.command = "print bar"' # remove first subtask
 
 > vt run task # cache hit
 $ print bar ◉ cache hit, replaying

crates/vite_task_bin/tests/e2e_snapshots/fixtures/cache-miss-command-change/vite-task.json

@@ -1,3 +1,7 @@
 {
-  "cache": true
+  "tasks": {
+    "task": {
+      "command": "print foo && print bar"
+    }
+  }
 }

crates/vite_task_bin/tests/e2e_snapshots/main.rs

@@ -477,10 +477,19 @@ fn main() {
         clippy::disallowed_types,
         reason = "Path required for CARGO_MANIFEST_DIR path traversal"
     )]
-    let fixtures_dir = std::path::PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap())
-        .join("tests")
-        .join("e2e_snapshots")
-        .join("fixtures");
+    let fixtures_dir = {
+        let manifest_dir =
+            std::path::PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap());
+
+        // Copy .node-version to the tmp dir so version manager shims can resolve the correct
+        // Node.js binary when running task commands.
+        let repo_root = manifest_dir.join("../..").canonicalize().unwrap();
+        std::fs::copy(repo_root.join(".node-version"), tmp_dir.path().join(".node-version"))
+            .unwrap();
+
+        manifest_dir.join("tests/e2e_snapshots/fixtures")
+    };
+
     let mut fixture_paths = std::fs::read_dir(fixtures_dir)
         .unwrap()
         .map(|entry| entry.unwrap().path())