1 files changed, 24 insertions, 0 deletions
diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index ba1880b80..ed5160565 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -168,6 +168,30 @@ fn fmt_stdin_error() {
   assert!(!output.status.success());
 }
 
+// Warning: this test requires internet access.
+#[test]
+fn upgrade_in_tmpdir() {
+  let temp_dir = TempDir::new().unwrap();
+  let exe_path = if cfg!(windows) {
+    temp_dir.path().join("deno")
+  } else {
+    temp_dir.path().join("deno.exe")
+  };
+  let _ = std::fs::copy(util::deno_exe_path(), &exe_path).unwrap();
+  assert!(exe_path.exists());
+  let _mtime1 = std::fs::metadata(&exe_path).unwrap().modified().unwrap();
+  let status = Command::new(&exe_path)
+    .arg("upgrade")
+    .arg("--force")
+    .spawn()
+    .unwrap()
+    .wait()
+    .unwrap();
+  assert!(status.success());
+  let _mtime2 = std::fs::metadata(&exe_path).unwrap().modified().unwrap();
+  // TODO(ry) assert!(mtime1 < mtime2);
+}
+
 #[test]
 fn installer_test_local_module_run() {
   let temp_dir = TempDir::new().expect("tempdir fail");