test: type check lib.deno_core.d.ts (#13356)

1 files changed, 28 insertions, 0 deletions

diff --git a/cli/tests/integration/mod.rs b/cli/tests/integration/mod.rs
index 6321e86ad..3ab79f7df 100644
--- a/cli/tests/integration/mod.rs
+++ b/cli/tests/integration/mod.rs
@@ -1088,6 +1088,34 @@ fn typecheck_declarations_unstable() {
 }
 
 #[test]
+fn typecheck_core() {
+  let deno_dir = TempDir::new().expect("tempdir fail");
+  let test_file = deno_dir.path().join("test_deno_core_types.ts");
+  std::fs::write(
+    &test_file,
+    format!(
+      "import \"{}\";",
+      deno_core::resolve_path(
+        util::root_path()
+          .join("core/lib.deno_core.d.ts")
+          .to_str()
+          .unwrap()
+      )
+      .unwrap()
+    ),
+  )
+  .unwrap();
+  let output = util::deno_cmd_with_deno_dir(deno_dir.path())
+    .arg("run")
+    .arg(test_file.to_str().unwrap())
+    .output()
+    .unwrap();
+  println!("stdout: {}", String::from_utf8(output.stdout).unwrap());
+  println!("stderr: {}", String::from_utf8(output.stderr).unwrap());
+  assert!(output.status.success());
+}
+
+#[test]
 fn js_unit_tests_lint() {
   let status = util::deno_cmd()
     .arg("lint")