fix(check): should bust check cache when json module or npm resolution changes (#19941)

A small part of #19928.

1 files changed, 11 insertions, 0 deletions

diff --git a/test_util/src/fs.rs b/test_util/src/fs.rs
index 2a64fb9c4..005c467a6 100644
--- a/test_util/src/fs.rs
+++ b/test_util/src/fs.rs
@@ -10,6 +10,8 @@ use std::sync::Arc;
 
 use anyhow::Context;
 use lsp_types::Url;
+use serde::de::DeserializeOwned;
+use serde::Serialize;
 
 use crate::assertions::assert_wildcard_match;
 
@@ -110,6 +112,10 @@ impl PathRef {
       .with_context(|| format!("Could not read file: {}", self))
   }
 
+  pub fn read_json<TValue: DeserializeOwned>(&self) -> TValue {
+    serde_json::from_str(&self.read_to_string()).unwrap()
+  }
+
   pub fn rename(&self, to: impl AsRef<Path>) {
     fs::rename(self, self.join(to)).unwrap();
   }
@@ -118,6 +124,11 @@ impl PathRef {
     fs::write(self, text.as_ref()).unwrap();
   }
 
+  pub fn write_json<TValue: Serialize>(&self, value: &TValue) {
+    let text = serde_json::to_string_pretty(value).unwrap();
+    self.write(text);
+  }
+
   pub fn symlink_dir(
     &self,
     oldpath: impl AsRef<Path>,