test(cli/dts): typecheck examples in declaration files (#10707)

This commits adds two integration tests that typecheck examples
in the docstrings in Deno declaration files.

1 files changed, 33 insertions, 0 deletions

diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index 19a1a8952..ce1205698 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -18,6 +18,39 @@ use tempfile::TempDir;
 use test_util as util;
 use tokio::task::LocalSet;
 
+// TODO(caspervonb): investiate why this fails on Windows.
+#[cfg(unix)]
+#[test]
+fn typecheck_declarations_ns() {
+  let status = util::deno_cmd()
+    .arg("test")
+    .arg("--allow-all")
+    .arg("--doc")
+    .arg(util::root_path().join("cli/dts/lib.deno.ns.d.ts"))
+    .spawn()
+    .unwrap()
+    .wait()
+    .unwrap();
+  assert!(status.success());
+}
+
+// TODO(caspervonb): investiate why this fails on Windows.
+#[cfg(unix)]
+#[test]
+fn typecheck_declarations_unstable() {
+  let status = util::deno_cmd()
+    .arg("test")
+    .arg("--doc")
+    .arg("--allow-all")
+    .arg("--unstable")
+    .arg(util::root_path().join("cli/dts/lib.deno.unstable.d.ts"))
+    .spawn()
+    .unwrap()
+    .wait()
+    .unwrap();
+  assert!(status.success());
+}
+
 #[test]
 fn js_unit_tests_lint() {
   let status = util::deno_cmd()